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parser: better error when expression calls a non existing function #9

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vojtajina opened this issue Jun 17, 2013 · 1 comment
Closed

parser: better error when expression calls a non existing function #9

vojtajina opened this issue Jun 17, 2013 · 1 comment
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type: bug

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@vojtajina
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Eg. <span>{{remaining()}}</span>, if remaining is not defined on the scope, you get:

Exception: Uncaught exception during mirrored execution: <$interpolate error! Can't interpolate: {{remaining()}}
Missing function. 
ORIGINAL STACKTRACE:
 #0      _relaxFnApply (package:angular/angular.dart:75:5)
#1      Parser.parse.<anonymous closure>.<anonymous closure> (package:angular/parser.dart:701:29)
#2      ParsedFn.call (package:angular/parser.dart:11:25)
#3      Interpolate.call.<anonymous closure> (package:angular/interpolate.dart:53:28)
#4      ParsedFn.call (package:angular/parser.dart:11:25)

ORIGINAL STACKTRACE:
 #0      ExceptionHandler.call (package:angular/exception_handler.dart:5:5)
#1      Interpolate.call.<anonymous closure> (package:angular/interpolate.dart:64:28)
#2      ParsedFn.call (package:angular/parser.dart:11:25)
#3      _relaxFnArgs.<anonymous closure> (package:angular/angular.dart:88:16)
#4      Scope.$digest (package:angular/scope.dart:202:39)
#5      bootstrapAngular.<anonymous closure> (http://localhost:8000/demo/todo/main.dart:37:23)
>
@jbdeboer
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jbdeboer commented Jul 2, 2013

#26 addresses this issue. The exception will read:

Exception: Uncaught exception during mirrored execution: <$interpolate error! Can't interpolate: {{remaining()}}
Undefined function remaining().

@ghost ghost assigned jbdeboer Jul 2, 2013
@jbdeboer jbdeboer closed this as completed Jul 2, 2013
@trinarytree trinarytree mentioned this issue Oct 3, 2013
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@jbdeboer jbdeboer mentioned this issue Jan 10, 2014
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@mehmetf mehmetf mentioned this issue Feb 15, 2014
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@savantmohan savantmohan mentioned this issue Feb 26, 2014
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@lohnicky lohnicky mentioned this issue Mar 5, 2014
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@vicb vicb mentioned this issue Mar 27, 2014
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@jonasbaldwin jonasbaldwin mentioned this issue Mar 28, 2014
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@pcornelissen pcornelissen mentioned this issue Apr 28, 2014
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chirayuk added a commit that referenced this issue May 3, 2014
@chirayuk
fix(Dirty Checking): fix watching methods/closures
4c3d7ee 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
chirayuk/angular.dart@issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    #1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    #2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    #3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    #4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    #5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    #6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    #7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    #8      Scope.watch (package:angular/core/scope.dart:240:31)
    #9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    #10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    #11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    #12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    #13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    #14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    #15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #16     _rootRun (dart:async/zone.dart:723)
    #17     _ZoneDelegate.run (dart:async/zone.dart:453)
    #18     _CustomizedZone.run (dart:async/zone.dart:663)
    #19     runZoned (dart:async/zone.dart:954)
    #20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #30     _rootRun (dart:async/zone.dart:723)
    #31     _ZoneDelegate.run (dart:async/zone.dart:453)
    #32     _CustomizedZone.run (dart:async/zone.dart:663)
    #33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    #1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    #2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    #3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    #4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #5      group (package:unittest/unittest.dart:396:9)
    #6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    #9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #10     group (package:unittest/unittest.dart:396:9)
    #11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    #14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    #15     _rootRun (dart:async/zone.dart:723)
    #16     _ZoneDelegate.run (dart:async/zone.dart:453)
    #17     _CustomizedZone.run (dart:async/zone.dart:663)
    #18     runZoned (dart:async/zone.dart:954)
    #19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    #1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #2      _rootRun (dart:async/zone.dart:723)
    #3      _rootRun (dart:async/zone.dart:724)
    #4      _rootRun (dart:async/zone.dart:724)
    #5      _ZoneDelegate.run (dart:async/zone.dart:453)
    #6      _CustomizedZone.run (dart:async/zone.dart:663)
    #7      runZoned (dart:async/zone.dart:954)
    #8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #13     _rootRunUnary (dart:async/zone.dart:730)
    #14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #20     _rootRun (dart:async/zone.dart:723)
    #21     _ZoneDelegate.run (dart:async/zone.dart:453)
    #22     _CustomizedZone.run (dart:async/zone.dart:663)
    #23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes #999
chirayuk added a commit to chirayuk/angular.dart that referenced this issue May 6, 2014
@chirayuk
fix(Dirty Checking): fix watching methods/closures
467040b 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    #1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    dart-archive#2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    dart-archive#3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    dart-archive#4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    dart-archive#5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    dart-archive#6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    dart-archive#7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    dart-archive#8      Scope.watch (package:angular/core/scope.dart:240:31)
    dart-archive#9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    dart-archive#10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    dart-archive#11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    dart-archive#12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    dart-archive#13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    dart-archive#14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    dart-archive#15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#16     _rootRun (dart:async/zone.dart:723)
    dart-archive#17     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#18     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#19     runZoned (dart:async/zone.dart:954)
    dart-archive#20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#30     _rootRun (dart:async/zone.dart:723)
    dart-archive#31     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#32     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    #1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    dart-archive#2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    dart-archive#3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    dart-archive#4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#5      group (package:unittest/unittest.dart:396:9)
    dart-archive#6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    dart-archive#9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#10     group (package:unittest/unittest.dart:396:9)
    dart-archive#11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    dart-archive#14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    dart-archive#15     _rootRun (dart:async/zone.dart:723)
    dart-archive#16     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#17     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#18     runZoned (dart:async/zone.dart:954)
    dart-archive#19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    #1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#2      _rootRun (dart:async/zone.dart:723)
    dart-archive#3      _rootRun (dart:async/zone.dart:724)
    dart-archive#4      _rootRun (dart:async/zone.dart:724)
    dart-archive#5      _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#6      _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#7      runZoned (dart:async/zone.dart:954)
    dart-archive#8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#13     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#20     _rootRun (dart:async/zone.dart:723)
    dart-archive#21     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#22     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes dart-archive#999
chirayuk added a commit that referenced this issue May 6, 2014
@chirayuk
fix(Dirty Checking): fix watching methods/closures
d71c7fa 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
chirayuk/angular.dart@issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    #1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    #2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    #3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    #4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    #5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    #6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    #7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    #8      Scope.watch (package:angular/core/scope.dart:240:31)
    #9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    #10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    #11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    #12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    #13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    #14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    #15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #16     _rootRun (dart:async/zone.dart:723)
    #17     _ZoneDelegate.run (dart:async/zone.dart:453)
    #18     _CustomizedZone.run (dart:async/zone.dart:663)
    #19     runZoned (dart:async/zone.dart:954)
    #20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #30     _rootRun (dart:async/zone.dart:723)
    #31     _ZoneDelegate.run (dart:async/zone.dart:453)
    #32     _CustomizedZone.run (dart:async/zone.dart:663)
    #33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    #1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    #2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    #3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    #4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #5      group (package:unittest/unittest.dart:396:9)
    #6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    #9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #10     group (package:unittest/unittest.dart:396:9)
    #11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    #14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    #15     _rootRun (dart:async/zone.dart:723)
    #16     _ZoneDelegate.run (dart:async/zone.dart:453)
    #17     _CustomizedZone.run (dart:async/zone.dart:663)
    #18     runZoned (dart:async/zone.dart:954)
    #19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    #1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #2      _rootRun (dart:async/zone.dart:723)
    #3      _rootRun (dart:async/zone.dart:724)
    #4      _rootRun (dart:async/zone.dart:724)
    #5      _ZoneDelegate.run (dart:async/zone.dart:453)
    #6      _CustomizedZone.run (dart:async/zone.dart:663)
    #7      runZoned (dart:async/zone.dart:954)
    #8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #13     _rootRunUnary (dart:async/zone.dart:730)
    #14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #20     _rootRun (dart:async/zone.dart:723)
    #21     _ZoneDelegate.run (dart:async/zone.dart:453)
    #22     _CustomizedZone.run (dart:async/zone.dart:663)
    #23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes #999
chirayuk added a commit that referenced this issue May 6, 2014
@chirayuk @jbdeboer
fix(Dirty Checking): fix watching methods/closures
14b5188 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
chirayuk/angular.dart@issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    #1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    #2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    #3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    #4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    #5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    #6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    #7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    #8      Scope.watch (package:angular/core/scope.dart:240:31)
    #9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    #10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    #11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    #12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    #13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    #14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    #15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #16     _rootRun (dart:async/zone.dart:723)
    #17     _ZoneDelegate.run (dart:async/zone.dart:453)
    #18     _CustomizedZone.run (dart:async/zone.dart:663)
    #19     runZoned (dart:async/zone.dart:954)
    #20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #30     _rootRun (dart:async/zone.dart:723)
    #31     _ZoneDelegate.run (dart:async/zone.dart:453)
    #32     _CustomizedZone.run (dart:async/zone.dart:663)
    #33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    #1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    #2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    #3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    #4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #5      group (package:unittest/unittest.dart:396:9)
    #6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    #9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    #10     group (package:unittest/unittest.dart:396:9)
    #11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    #12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    #13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    #14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    #15     _rootRun (dart:async/zone.dart:723)
    #16     _ZoneDelegate.run (dart:async/zone.dart:453)
    #17     _CustomizedZone.run (dart:async/zone.dart:663)
    #18     runZoned (dart:async/zone.dart:954)
    #19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    #1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    #2      _rootRun (dart:async/zone.dart:723)
    #3      _rootRun (dart:async/zone.dart:724)
    #4      _rootRun (dart:async/zone.dart:724)
    #5      _ZoneDelegate.run (dart:async/zone.dart:453)
    #6      _CustomizedZone.run (dart:async/zone.dart:663)
    #7      runZoned (dart:async/zone.dart:954)
    #8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    #9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    #10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    #12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    #13     _rootRunUnary (dart:async/zone.dart:730)
    #14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #20     _rootRun (dart:async/zone.dart:723)
    #21     _ZoneDelegate.run (dart:async/zone.dart:453)
    #22     _CustomizedZone.run (dart:async/zone.dart:663)
    #23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    #24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    #25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    #26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    #27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes #999
chirayuk added a commit to chirayuk/angular.dart that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
6004c34 
Refer dart-archive#1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    dart-archive#2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    dart-archive#3      _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#7      _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    dart-archive#12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    dart-archive#13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    dart-archive#14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    dart-archive#15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    dart-archive#16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    dart-archive#17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    dart-archive#18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    dart-archive#19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    dart-archive#20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    dart-archive#21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    dart-archive#22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#27     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#34     _rootRun (dart:async/zone.dart:723)
    dart-archive#35     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    dart-archive#37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    dart-archive#38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    dart-archive#39     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)
chirayuk added a commit to chirayuk/angular.dart that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
2d5c837 
Refer dart-archive#1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    dart-archive#2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    dart-archive#3      _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#7      _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    dart-archive#12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    dart-archive#13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    dart-archive#14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    dart-archive#15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    dart-archive#16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    dart-archive#17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    dart-archive#18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    dart-archive#19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    dart-archive#20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    dart-archive#21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    dart-archive#22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#27     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#34     _rootRun (dart:async/zone.dart:723)
    dart-archive#35     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    dart-archive#37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    dart-archive#38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    dart-archive#39     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)
chirayuk added a commit to chirayuk/angular.dart that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
0ca0741 
Refer dart-archive#1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    dart-archive#2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    dart-archive#3      _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#7      _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    dart-archive#12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    dart-archive#13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    dart-archive#14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    dart-archive#15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    dart-archive#16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    dart-archive#17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    dart-archive#18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    dart-archive#19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    dart-archive#20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    dart-archive#21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    dart-archive#22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#27     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#34     _rootRun (dart:async/zone.dart:723)
    dart-archive#35     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    dart-archive#37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    dart-archive#38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    dart-archive#39     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes dart-archive#1182
chirayuk added a commit that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
75bf277 
Refer #1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    #2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    #3      _rootRunUnary (dart:async/zone.dart:730)
    #4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #7      _onRunUnary (package:angular/core/zone.dart:113:17)
    #8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    #12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    #13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    #14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    #15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    #16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    #17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    #18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    #19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    #20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    #21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    #22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #27     _onRunUnary (package:angular/core/zone.dart:113:17)
    #28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #34     _rootRun (dart:async/zone.dart:723)
    #35     _ZoneDelegate.run (dart:async/zone.dart:453)
    #36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    #37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    #38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    #39     _onRunUnary (package:angular/core/zone.dart:113:17)
    #40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes #1182
chirayuk added a commit that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
98b9832 
Refer #1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    #2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    #3      _rootRunUnary (dart:async/zone.dart:730)
    #4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #7      _onRunUnary (package:angular/core/zone.dart:113:17)
    #8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    #12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    #13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    #14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    #15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    #16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    #17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    #18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    #19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    #20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    #21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    #22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #27     _onRunUnary (package:angular/core/zone.dart:113:17)
    #28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #34     _rootRun (dart:async/zone.dart:723)
    #35     _ZoneDelegate.run (dart:async/zone.dart:453)
    #36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    #37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    #38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    #39     _onRunUnary (package:angular/core/zone.dart:113:17)
    #40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes #1182
chirayuk added a commit that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
5cb46a1 
Refer #1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    #2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    #3      _rootRunUnary (dart:async/zone.dart:730)
    #4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #7      _onRunUnary (package:angular/core/zone.dart:113:17)
    #8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    #12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    #13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    #14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    #15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    #16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    #17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    #18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    #19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    #20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    #21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    #22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #27     _onRunUnary (package:angular/core/zone.dart:113:17)
    #28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #34     _rootRun (dart:async/zone.dart:723)
    #35     _ZoneDelegate.run (dart:async/zone.dart:453)
    #36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    #37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    #38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    #39     _onRunUnary (package:angular/core/zone.dart:113:17)
    #40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes #1182
chirayuk added a commit that referenced this issue Jun 26, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
11b1206 
Refer #1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    #1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    #2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    #3      _rootRunUnary (dart:async/zone.dart:730)
    #4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #7      _onRunUnary (package:angular/core/zone.dart:113:17)
    #8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    #12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    #13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    #14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    #15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    #16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    #17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    #18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    #19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    #20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    #21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    #22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    #23     _rootRunUnary (dart:async/zone.dart:730)
    #24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    #26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    #27     _onRunUnary (package:angular/core/zone.dart:113:17)
    #28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    #31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    #32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    #33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    #34     _rootRun (dart:async/zone.dart:723)
    #35     _ZoneDelegate.run (dart:async/zone.dart:453)
    #36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    #37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    #38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    #39     _onRunUnary (package:angular/core/zone.dart:113:17)
    #40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    #41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    #42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    #43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes #1182
@mvuksano mvuksano mentioned this issue Jul 1, 2014
Closed
dsalsbury pushed a commit to dsalsbury/angular.dart that referenced this issue Jul 16, 2014
@chirayuk
fix(Dirty Checking): fix watching methods/closures
3e3304c 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
chirayuk/angular.dart@issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    dart-archive#1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    dart-archive#2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    dart-archive#3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    dart-archive#4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    dart-archive#5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    dart-archive#6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    dart-archive#7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    dart-archive#8      Scope.watch (package:angular/core/scope.dart:240:31)
    dart-archive#9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    dart-archive#10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    dart-archive#11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    dart-archive#12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    dart-archive#13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    dart-archive#14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    dart-archive#15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#16     _rootRun (dart:async/zone.dart:723)
    dart-archive#17     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#18     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#19     runZoned (dart:async/zone.dart:954)
    dart-archive#20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#30     _rootRun (dart:async/zone.dart:723)
    dart-archive#31     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#32     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    dart-archive#1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    dart-archive#2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    dart-archive#3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    dart-archive#4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#5      group (package:unittest/unittest.dart:396:9)
    dart-archive#6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    dart-archive#9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#10     group (package:unittest/unittest.dart:396:9)
    dart-archive#11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    dart-archive#14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    dart-archive#15     _rootRun (dart:async/zone.dart:723)
    dart-archive#16     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#17     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#18     runZoned (dart:async/zone.dart:954)
    dart-archive#19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    dart-archive#1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#2      _rootRun (dart:async/zone.dart:723)
    dart-archive#3      _rootRun (dart:async/zone.dart:724)
    dart-archive#4      _rootRun (dart:async/zone.dart:724)
    dart-archive#5      _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#6      _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#7      runZoned (dart:async/zone.dart:954)
    dart-archive#8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#13     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#20     _rootRun (dart:async/zone.dart:723)
    dart-archive#21     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#22     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes dart-archive#999
dsalsbury pushed a commit to dsalsbury/angular.dart that referenced this issue Jul 16, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
3c613fd 
Refer dart-archive#1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    dart-archive#1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    dart-archive#2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    dart-archive#3      _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#7      _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    dart-archive#12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    dart-archive#13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    dart-archive#14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    dart-archive#15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    dart-archive#16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    dart-archive#17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    dart-archive#18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    dart-archive#19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    dart-archive#20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    dart-archive#21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    dart-archive#22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#27     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#34     _rootRun (dart:async/zone.dart:723)
    dart-archive#35     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    dart-archive#37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    dart-archive#38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    dart-archive#39     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes dart-archive#1182
dsalsbury pushed a commit to dsalsbury/angular.dart that referenced this issue Jul 16, 2014
@chirayuk
fix(Dirty Checking): fix watching methods/closures
2894a1b 
-  BUG: DynamicFieldGetterFactory::isMethod did not handle methods
   defined in superclasses.
-  BUG: Upon detecting a method, the code assumed that you would only
   invoke it.  This broke application code that watched a method (e.g.
   by way of Component mapping) just to get the closurized value and
   store it somewhere to invoke later (test case and stack trace at end
   of this commit message.)
-  BUG: StaticFieldGetterFactory::method() and
   DynamicFieldGetterFactory::method() differed.  There was no
   difference between StaticFieldGetterFactory::method() and
   StaticFieldGetterFactory::getter(). 
   DynamicFieldGetterFactory::method(), as mentioned before, assumed
   that the only thing you could do with it was to invoke it (i.e. not a
   leaf watch.)
-  There was very little testing for StaticFieldGetterFactory.  This
   meant that, though it was out of sync with DynamicFieldGetterFactory,
   no tests were failing.

Changes in this commit:

- run the same tests against StaticFieldGetterFactory that are run
  against DynamicFieldGetterFactory
- do not call the result of GetterFactory.method()
  in "set object(value)"
- reduce the difference between the two different factories. 
  GetterFactory now only has one method in it's interface definition -
  the getter function.  `_MODE_METHOD_INVOKE_`, `isMethod`,
  `isMethodInvoke`, etc. are gone.

**Bug Details:**

Refer to the repro case at
chirayuk/angular.dart@issue_999^...issue_999

```dart
// Given this object.
class Foo {
  bar(x) => x+1;
}

// This test case (in an appropriate file like `scope_spec.dart`) fails
// with a traceback

it('should watch closures', (RootScope rootScope, Logger log) {
  rootScope.context['foo'] = new Foo();
  rootScope.context['func'] = null;
  rootScope.watch('foo.bar', (v, _) { rootScope.context['func'] = v; });
  rootScope.watch('func(1)', (v, o) => log([v, o]));
  rootScope.apply();
  expect(log).toEqual([[null, null], [2, null]]);
});
```

**Stack Trace:**

    Chrome 34.0.1847 (Mac OS X 10.9.2) scope watch/digest should watch closures FAILED
    Test failed: Caught Closure call with mismatched arguments: function 'DynamicFieldGetterFactory.method.<anonymous closure>'

    NoSuchMethodError: incorrect number of arguments passed to method named 'DynamicFieldGetterFactory.method.<anonymous closure>'
    Receiver: Closure: (List, Map) => dynamic
    Tried calling: DynamicFieldGetterFactory.method.<anonymous closure>(Instance of 'Foo')
    Found: DynamicFieldGetterFactory.method.<anonymous closure>(args, namedArgs)
    #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
    dart-archive#1      DirtyCheckingRecord.object= (package:angular/change_detection/dirty_checking_change_detector.dart:465:78)
    dart-archive#2      _FieldHandler.acceptValue (package:angular/change_detection/watch_group.dart:630:17)
    dart-archive#3      WatchGroup.addFieldWatch (package:angular/change_detection/watch_group.dart:171:29)
    dart-archive#4      FieldReadAST.setupWatch (package:angular/change_detection/ast.dart:67:31)
    dart-archive#5      WatchGroup.watch.<anonymous closure> (package:angular/change_detection/watch_group.dart:144:40)
    dart-archive#6      _HashMap.putIfAbsent (dart:collection-patch/collection_patch.dart:124)
    dart-archive#7      WatchGroup.watch (package:angular/change_detection/watch_group.dart:143:27)
    dart-archive#8      Scope.watch (package:angular/core/scope.dart:240:31)
    dart-archive#9      main.<anonymous closure>.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1308:24)
    dart-archive#10     _LocalInstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:440)
    dart-archive#11     _LocalInstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:436)
    dart-archive#12     _LocalClosureMirror.apply (dart:mirrors-patch/mirrors_impl.dart:466)
    dart-archive#13     DynamicInjector.invoke (package:di/dynamic_injector.dart:97:20)
    dart-archive#14     _SpecInjector.inject (package:angular/mock/test_injection.dart:58:22)
    dart-archive#15     inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#16     _rootRun (dart:async/zone.dart:723)
    dart-archive#17     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#18     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#19     runZoned (dart:async/zone.dart:954)
    dart-archive#20     _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#21     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#22     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#26     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#27     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#28     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#29     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#30     _rootRun (dart:async/zone.dart:723)
    dart-archive#31     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#32     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#33     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#34     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#35     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#36     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#37     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

    DECLARED AT:#0      inject (package:angular/mock/test_injection.dart:97:5)
    dart-archive#1      _injectify (/Users/chirayu/work/angular.dart/test/_specs.dart:236:25)
    dart-archive#2      iit (/Users/chirayu/work/angular.dart/test/_specs.dart:244:53)
    dart-archive#3      main.<anonymous closure>.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1305:10)
    dart-archive#4      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#5      group (package:unittest/unittest.dart:396:9)
    dart-archive#6      describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#7      describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#8      main.<anonymous closure> (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:1009:13)
    dart-archive#9      describe.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:62:9)
    dart-archive#10     group (package:unittest/unittest.dart:396:9)
    dart-archive#11     describe (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:60:15)
    dart-archive#12     describe (/Users/chirayu/work/angular.dart/test/_specs.dart:248:46)
    dart-archive#13     main (/Users/chirayu/work/angular.dart/test/core/scope_spec.dart:14:11)
    dart-archive#14     main.<anonymous closure> (http://localhost:8765/__adapter_dart_unittest.dart:169:15)
    dart-archive#15     _rootRun (dart:async/zone.dart:723)
    dart-archive#16     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#17     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#18     runZoned (dart:async/zone.dart:954)
    dart-archive#19     main (http://localhost:8765/__adapter_dart_unittest.dart:146:11)

    #0      _SpecInjector.inject (package:angular/mock/test_injection.dart:60:7)
    dart-archive#1      inject.<anonymous closure> (package:angular/mock/test_injection.dart:100:44)
    dart-archive#2      _rootRun (dart:async/zone.dart:723)
    dart-archive#3      _rootRun (dart:async/zone.dart:724)
    dart-archive#4      _rootRun (dart:async/zone.dart:724)
    dart-archive#5      _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#6      _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#7      runZoned (dart:async/zone.dart:954)
    dart-archive#8      _syncOuter.<anonymous closure> (package:angular/mock/zone.dart:227:22)
    dart-archive#9      _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:13:14)
    dart-archive#10     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#11     _withSetup.<anonymous closure> (/Users/chirayu/work/angular.dart/test/jasmine_syntax.dart:14:5)
    dart-archive#12     _run.<anonymous closure> (package:unittest/src/test_case.dart:102:27)
    dart-archive#13     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#14     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#15     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#16     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#17     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#18     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#19     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#20     _rootRun (dart:async/zone.dart:723)
    dart-archive#21     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#22     _CustomizedZone.run (dart:async/zone.dart:663)
    dart-archive#23     _BaseZone.runGuarded (dart:async/zone.dart:574)
    dart-archive#24     _BaseZone.bindCallback.<anonymous closure> (dart:async/zone.dart:599)
    dart-archive#25     _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:23)
    dart-archive#26     _asyncRunCallback (dart:async/schedule_microtask.dart:32)
    dart-archive#27     _handleMutation (file:///Volumes/data/b/build/slave/dartium-mac-full-dev/build/src/dart/tools/dom/src/native_DOMImplementation.dart:588)

Closes dart-archive#999
dsalsbury pushed a commit to dsalsbury/angular.dart that referenced this issue Jul 16, 2014
@chirayuk
fix(ng-view): cleanup should not destroy an already destroyed scope
d85bd3e 
Refer dart-archive#1182
and repro https://github.com/chirayuk/sample/tree/issue_1182_leaving_a_nested_ng_view

NgView's register cleanup handlers this way:

    _leaveSubscription = route.onLeave.listen((_) {
      _leaveSubscription.cancel();
      // …
      _cleanUp();
    });

When there are nested ng-views, upon a route change, the parent NgView
calls it's _cleanUp() first (which destroys it's child scope) and then
the child NgView attempts a cleanup.  However, it's child scope is
already detached due to the parent NgView cleaning up causing an
exception.

Stack trace is:

    'package:angular/core/scope.dart': Failed assertion: line 335 pos 12: 'isAttached' is not true.

    STACKTRACE:
    #0      Scope.destroy (package:angular/core/scope.dart:335:12)
    dart-archive#1      NgView._cleanUp (package:angular/routing/ng_view.dart:130:24)
    dart-archive#2      NgView._show.<anonymous closure> (package:angular/routing/ng_view.dart:106:15)
    dart-archive#3      _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#4      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#5      _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#6      VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#7      _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#8      _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#9      _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#10     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#11     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:333)
    dart-archive#12     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263)
    dart-archive#13     _SyncBroadcastStreamController._sendData.<anonymous closure> (dart:async/broadcast_stream_controller.dart:344)
    dart-archive#14     _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:297)
    dart-archive#15     _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:343)
    dart-archive#16     _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:227)
    dart-archive#17     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:654:48)
    dart-archive#18     Router._leaveCurrentRouteHelper (package:route_hierarchical/client.dart:656:47)
    dart-archive#19     Router._leaveCurrentRoute (package:route_hierarchical/client.dart:645:41)
    dart-archive#20     Router._leaveOldRoutes (package:route_hierarchical/client.dart:525:30)
    dart-archive#21     Router._processNewRoute (package:route_hierarchical/client.dart:497:27)
    dart-archive#22     Router._route.<anonymous closure> (package:route_hierarchical/client.dart:481:29)
    dart-archive#23     _rootRunUnary (dart:async/zone.dart:730)
    dart-archive#24     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#25     _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:113:63)
    dart-archive#26     VmTurnZone._onRunBase (package:angular/core/zone.dart:97:16)
    dart-archive#27     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#28     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#29     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#30     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
    dart-archive#31     _Future._propagateToListeners (dart:async/future_impl.dart:571)
    dart-archive#32     _Future._completeWithValue (dart:async/future_impl.dart:331)
    dart-archive#33     _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:393)
    dart-archive#34     _rootRun (dart:async/zone.dart:723)
    dart-archive#35     _ZoneDelegate.run (dart:async/zone.dart:453)
    dart-archive#36     _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:117:43)
    dart-archive#37     VmTurnZone._finishTurn (package:angular/core/zone.dart:143:34)
    dart-archive#38     VmTurnZone._onRunBase (package:angular/core/zone.dart:104:43)
    dart-archive#39     _onRunUnary (package:angular/core/zone.dart:113:17)
    dart-archive#40     _ZoneDelegate.runUnary (dart:async/zone.dart:462)
    dart-archive#41     _CustomizedZone.runUnary (dart:async/zone.dart:667)
    dart-archive#42     _BaseZone.runUnaryGuarded (dart:async/zone.dart:582)
    dart-archive#43     _BaseZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:608)

Closes dart-archive#1182
@tlvenn tlvenn mentioned this issue Sep 8, 2014
Closed
@MikeMitterer MikeMitterer mentioned this issue Oct 2, 2014
Closed
@devmetal devmetal mentioned this issue Nov 26, 2014
Open
@thaniyarasu thaniyarasu mentioned this issue Dec 27, 2014
Closed
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