feat(isStateFilter): Include optional state params.

Allows state params to be passed to the `isState` filter for more
accurate matching.

src/stateFilters.js

@@ -9,8 +9,8 @@
  */
 $IsStateFilter.$inject = ['$state'];
 function $IsStateFilter($state) {
-  var isFilter = function (state) {
-    return $state.is(state);
+  var isFilter = function (state, params) {
+    return $state.is(state, params);
   };
   isFilter.$stateful = true;
   return isFilter;

test/stateFiltersSpec.js

@@ -3,7 +3,8 @@ describe('isState filter', function() {
   beforeEach(module(function($stateProvider) {
     $stateProvider
       .state('a', { url: '/' })
-      .state('a.b', { url: '/b' });
+      .state('a.b', { url: '/b' })
+      .state('with-param', { url: '/with/:param' });
   }));
 
   it('should return true if the current state exactly matches the input state', inject(function($parse, $state, $q, $rootScope) {
@@ -17,6 +18,18 @@ describe('isState filter', function() {
     $q.flush();
     expect($parse('"a" | isState')($rootScope)).toBe(false);
   }));
+
+  it('should return true if the current state and param matches the input state', inject(function($parse, $state, $q, $rootScope) {
+    $state.go('with-param', {param: 'a'});
+    $q.flush();
+    expect($parse('"with-param" | isState: {param: "a"}')($rootScope)).toBe(true);
+  }));
+
+  it('should return false if the current state and param does not match the input state', inject(function($parse, $state, $q, $rootScope) {
+    $state.go('with-param', {param: 'b'});
+    $q.flush();
+    expect($parse('"with-param" | isState: {param: "a"}')($rootScope)).toBe(false);
+  }));
 });
 
 describe('includedByState filter', function() {