Remove myunit #4369

elazarg · 2017-12-15T09:29:37Z

This should conclude #1673. It uses unittest.TestCase as a shortcut, as suggested by @JukkaL. It is aliased as Suite.

The transition is crude, aims at functionality; I intend to clean it up in a later PRs.

Helper functions moved from from myunit.__init__ to test.helpers. I think some of the asserts should be changed to simple assert to take advantage of pytest's introspection.
BaseTestCase is inlined (and perhaps was never needed).
testargs fails without the change to option.py. I'm not sure why it hadn't fail before.
pytest fixtures are not used yet

As in previous changes, using pytest -n0 --collect-only can give you the list of tests; diffing it with the result of the same command on master shows difference of 155 test items. grep ' def test_' mypy/test/test*.py | wc -l gives 162 items, and there are 7 skipped items.

emmatyping · 2017-12-15T10:59:42Z

This is excellent! I have a branch that moves several of the assert functions to bare asserts, if that is desired. Also, I believe the original idea was that replacement of the test framework would be concluded when runtests.py was replaced entirely by pytest? So I don't think this quite concludes #1673. But it certainly is great progress!

elazarg · 2017-12-15T11:10:51Z

@ethanhs thanks! Yeah, maybe "conclude" is not accurate. I hope this PR does not conflict with your branch, it will be very useful.

emmatyping · 2017-12-15T21:25:07Z

@elazarg well, I just checked and it already has quite a few conflicts with master, so this branch can't hurt more than the conflicts that already exist. No worries :)

emmatyping

Just a few questions and comments on the changes. Thanks again!

emmatyping · 2017-12-16T02:01:06Z

ROADMAP.md

@@ -19,9 +19,6 @@ more accurate.
 - Continue making error messages more useful and informative.
  ([issue](https://github.com/python/mypy/labels/topic-usability))

- Switch completely to pytest and remove the custom testing framework.


I think we should keep this until we can run all the tests with just pytest

emmatyping · 2017-12-16T04:11:14Z

mypy/test/helpers.py

@@ -308,3 +249,52 @@ def retry_on_error(func: Callable[[], Any], max_wait: float = 1.0) -> None:
                # Done enough waiting, the error seems persistent.
                raise
            time.sleep(wait_time)
+
+
+class AssertionFailure(Exception):


This Exception and the assert*s below are the targets I mentioned replacing. They entirely duplicate pytest functionality.

Do you want me to do anything about this in current PR? I wanted to leave these changes to the following PRs.

No, I don't think that is needed.

emmatyping · 2017-12-16T04:24:28Z

mypy/test/testargs.py

 from mypy.main import process_options


 class ArgSuite(Suite):
    def test_coherence(self) -> None:
        options = Options()
        _, parsed_options = process_options([], require_targets=False)
-        assert_equal(options, parsed_options)
+        assert options.__dict__.keys() == parsed_options.__dict__.keys()


Could you explain why you chose this method of checking equality? assert_equal is essentially assert not a != b, I believe this could be a bit different, and is not as straightforward.

I've added these checks in order to find out why it failed. Since it was helpful for me, I thought it might be better not to switch back.

emmatyping · 2017-12-16T04:34:57Z

mypy/test/testsubtypes.py

@@ -67,10 +67,8 @@ def test_interface_subtyping(self) -> None:
        self.assert_equivalent(self.fx.f, self.fx.f)
        self.assert_not_subtype(self.fx.a, self.fx.f)

+    @skip


Perhaps still leave the TODO item comment here and for the other @skips? I sometimes grep for them from time to time.

I am thinking about skip as some kind of TODO... I can leave the TODO, but you might want to grep for skips too.

emmatyping · 2017-12-16T04:36:26Z

pytest.ini

@@ -14,7 +14,7 @@ python_files = test*.py

 # Because we provide our own collection logic, disable the default
 # python collector by giving it empty patterns to search for.
-python_classes =
+python_classes = *Suite


Perhaps it would be better to explicitly check via e.g. isinstance checks in the custom collector?

The custom collector is for the data-driven tests. It doesn't know about tests derived from TestCase, and I think it might be awkward to make it handle the non-TestCase, non-data-driven tests. I am still thinking about the right way to collect tests, but I prefer to work on it in following PRs.

The comment above this line is no longer up-to-date.

emmatyping · 2017-12-17T01:48:45Z

mypy/options.py

@@ -129,7 +129,7 @@ def __init__(self) -> None:
        self.scripts_are_modules = False

        # Config file name
-        self.config_file = None  # type: Optional[str]
+        self.config_file = 'setup.cfg'  # type: Optional[str]


Isn't this just str now? (no longer Optional[str]?)

I think it isn't. Looks like it's possible to have None if there's no config file; but when running the test, there is. I'm not sure about that though; I wonder why ArgSuite doesn't fail on master.

What's the reason for this change?

This change doesn't seem to be related to the rest of PR. Can you remove this?

It is needed because (as far as I understand) pytest uses the config file, so the default option is not None. I'm not sure this change is the right one; another option I can think of is changing this value inside the test.

But this is the mypy config file, which I don't expect to be directly relevant for pytest. Pytest config file should be configured somewhere else (not sure how this works exactly, though) -- and pytest already has a config file (pytest.ini) which seems to be used. Does this PR do something that requires changes to this? Or maybe I'm talking about a different config file?

I think I might have confused something in my previous response (it's been a while since I tried to figure this out), but note that SHARED_CONFIG_FILES = ('setup.cfg',) is hardcoded in main.py. Somewhere in parse_config_file() there's probably a difference between how myunit and pytest work, so one the former uses None and the latter uses 'setup.cfg'.

Running myunit, os.path.exists('setup.cfg') is false. Running pytest, it is true.

I'm trying a different approach - simply create a new directory and chdir into it.

Failed - changing directories did not work on Windows.

elazarg · 2018-01-06T17:53:27Z

I'm not sure why the conflicts don't go away.

emmatyping · 2018-01-06T21:28:06Z

For some reason I've had to fix merge conflicts twice for github to register it. This seems like a bug in Github. I went ahead and did the second merge, things seem to not conflict now.

msullivan · 2018-01-26T03:58:49Z

This looks pretty reasonable to me. It's always nice when you can delete a lot of code. @JukkaL, is there any reason to not merge this?

JukkaL · 2018-01-29T19:19:34Z

I had look at this a while ago and it looked good, but then I got distracted by fine-grained incremental work and unfortunately didn't finish my review. I'll do another pass this week. Sorry about the slow turnaround -- it will great be to finally drop myunit!

JukkaL

Looks good, mostly some minor things. Thanks for the cleanup!

The typeshed change seems unrelated.

JukkaL · 2018-02-01T22:03:49Z

mypy/options.py

@@ -129,7 +129,7 @@ def __init__(self) -> None:
        self.scripts_are_modules = False

        # Config file name
-        self.config_file = None  # type: Optional[str]
+        self.config_file = 'setup.cfg'  # type: Optional[str]


This change doesn't seem to be related to the rest of PR. Can you remove this?

JukkaL · 2018-02-01T22:05:40Z

mypy/test/data.py

-    def __init__(self, *, update_data: bool) -> None:
-        self.update_data = update_data
+    # Assigned from MypyDataCase.runtest
+    update_data = False  # type: bool


Style nit: redundant type annotation (you can also remove the str and bool annotations above).

JukkaL · 2018-02-01T22:07:58Z

mypy/test/helpers.py

@@ -312,6 +255,55 @@ def retry_on_error(func: Callable[[], Any], max_wait: float = 1.0) -> None:
            time.sleep(wait_time)


+class AssertionFailure(Exception):


You could probably use the built-in exception AssertionError instead of defining a new class here.

JukkaL · 2018-02-01T22:08:58Z

mypy/test/helpers.py

+            super().__init__()
+
+
+def assert_true(b: bool, msg: Optional[str] = None) -> None:


Add comment about assert_true and assert_false being redundant (we could just use the assert statement).

JukkaL · 2018-02-01T22:14:56Z

mypy/test/testsolve.py

 from mypy.constraints import SUPERTYPE_OF, SUBTYPE_OF, Constraint
 from mypy.solve import solve_constraints
 from mypy.test.typefixture import TypeFixture
 from mypy.types import Type, TypeVarType, TypeVarId


 class SolveSuite(Suite):
-    def __init__(self) -> None:
-        super().__init__()
+    def setUp(self) -> None:


Elsewhere we had a setup method, which is a bit confusing. This is needed because of unittest. I wonder if it make sense to use this name variant uniformly?

If you insist, but I'm not sure that's desirable. The naming distinction makes it clear where it's required by unittest and where it isn't.

Ok no need to change this. If this becomes a problem we can reconsider.

JukkaL · 2018-02-01T22:20:37Z

mypy/test/helpers.py

-from mypy.myunit import AssertionFailure
+
+import pytest  # type: ignore  # no pytest in typeshed
+from unittest import TestCase as Suite


Add comment about this, since this may be kind of unexpected. In the future we'd probably want to directly import TestCase in test files and inherit from it instead of the Suite alias (and maybe rename some of the other helper classes to avoid ambiguity).

JukkaL · 2018-02-01T22:22:53Z

pytest.ini

@@ -14,7 +14,7 @@ python_files = test*.py

 # Because we provide our own collection logic, disable the default
 # python collector by giving it empty patterns to search for.
-python_classes =
+python_classes = *Suite


The comment above this line is no longer up-to-date.

* remove redundant type declarartions * comment about aliasing * s/AssertionFailure/AssertionError/g * Fix comment in pytest.ini

JukkaL

LGTM now! Thanks for the updates!

JelleZijlstra · 2018-02-06T19:27:25Z

Hooray!

* master: (32 commits) Fix some fine-grained cache/fswatcher problems (python#4560) Sync typeshed (python#4559) Add _cached suffix to test cases in fine-grained tests with cache (python#4558) Add back support for simplified fine-grained logging (python#4557) Type checking of class decorators (python#4544) Sync typeshed (python#4556) When loading from a fine-grained cache, use the real path, not the cached (python#4555) Switch all of the fine-grained debug logging to use manager.log (python#4550) Caching for fine-grained incremental mode (python#4483) Fix --warn-return-any for NotImplemented (python#4545) Remove myunit (python#4369) Store line numbers of imports in the cache metadata (python#4533) README.md: Fix a typo (python#4529) Enable generation and caching of fine-grained dependencies from normal runs (python#4526) Move argument parsing for the fine-grained flag into the main arg parsing code (python#4524) Don't warn about unrecognized options starting with 'x_' (python#4522) stubgen: don't append star arg when args list already has varargs appended (python#4518) Handle TypedDict in diff and deps (python#4510) Fix Options.__repr__ to not infinite recurse (python#4514) Fix some fine-grained incremental bugs with newly imported files (python#4502) ...

These mostly date back to python#4369 There are also some skipped tests in here that fail that I don't touch

These mostly date back to #4369 There are also some skipped tests in here that fail that I don't touch

remove myunit

2ece9a0

elazarg mentioned this pull request Dec 15, 2017

provide tools for testing projects that use mypy (e.g. mypy.tests.data pytest plugin) #4366

Closed

remove unused helpers

ca12acf

emmatyping mentioned this pull request Dec 15, 2017

Switch to pytest from our homegrown test runner #1673

Closed

emmatyping reviewed Dec 16, 2017

View reviewed changes

revert ROADMAP, return TODO and assert_equal

57a2599

emmatyping reviewed Dec 17, 2017

View reviewed changes

Merge branch 'master' into remove-myunit

108cdbf

Merge branch 'master' into remove-myunit

919f7c4

elazarg added 4 commits January 7, 2018 01:09

Add blank line

ff8ef0a

Merge branch 'master' into remove-myunit

4d7cdc2

undo removal of empty line

b9c47a7

fix testerrorstream

0cb5798

JukkaL reviewed Feb 1, 2018

View reviewed changes

elazarg added 2 commits February 2, 2018 03:05

Follow review

491bac9

* remove redundant type declarartions * comment about aliasing * s/AssertionFailure/AssertionError/g * Fix comment in pytest.ini

Merge remote-tracking branch 'upstream/master' into remove-myunit

83b6c85

elazarg force-pushed the remove-myunit branch from a608d48 to 0f3b68e Compare February 2, 2018 02:15

ArgSuite: do not test options.config_file

a2ebf80

elazarg force-pushed the remove-myunit branch from 0f3b68e to a2ebf80 Compare February 2, 2018 02:42

JukkaL approved these changes Feb 6, 2018

View reviewed changes

JukkaL merged commit 7ba2df4 into python:master Feb 6, 2018

ikonst mentioned this pull request Jun 1, 2021

Improve pytest quality of life #10567

Merged

hauntsaninja added a commit to hauntsaninja/mypy that referenced this pull request Jul 3, 2023

Unskip some tests that appear to pass

ecd3f11

These mostly date back to python#4369 There are also some skipped tests in here that fail that I don't touch

hauntsaninja mentioned this pull request Jul 3, 2023

Unskip some tests that appear to pass #15567

Merged

JelleZijlstra pushed a commit that referenced this pull request Jul 3, 2023

Unskip some tests that appear to pass (#15567)

259c822

These mostly date back to #4369 There are also some skipped tests in here that fail that I don't touch

		@@ -312,6 +255,55 @@ def retry_on_error(func: Callable[[], Any], max_wait: float = 1.0) -> None:
		time.sleep(wait_time)


		class AssertionFailure(Exception):

		super().__init__()


		def assert_true(b: bool, msg: Optional[str] = None) -> None:

Remove myunit #4369

Remove myunit #4369

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elazarg commented Dec 15, 2017

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elazarg commented Jan 6, 2018

emmatyping commented Jan 6, 2018

msullivan commented Jan 26, 2018

JukkaL commented Jan 29, 2018

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JelleZijlstra commented Feb 6, 2018

elazarg Dec 16, 2017 •

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