Adding Angular and dependent packages for testing

third_party/pkg/angular/test/directive/ng_form_spec.dart

+library form_spec;
+
+import '../_specs.dart';
+
+main() =>
+describe('form', () {
+  TestBed _;
+
+  beforeEach(inject((TestBed tb) => _ = tb));
+
+  it('should suppress the submission event if no action is provided within the form', inject((Scope scope) {
+    var element = $('<form name="myForm"></form>');
+
+    _.compile(element);
+    scope.$apply();
+
+    Event submissionEvent = new Event.eventType('CustomEvent', 'submit');
+
+    expect(submissionEvent.defaultPrevented).toBe(false);
+    element[0].dispatchEvent(submissionEvent);
+    expect(submissionEvent.defaultPrevented).toBe(true);
+
+    Event fakeEvent = new Event.eventType('CustomEvent', 'running');
+
+    expect(fakeEvent.defaultPrevented).toBe(false);
+    element[0].dispatchEvent(submissionEvent);
+    expect(fakeEvent.defaultPrevented).toBe(false);
+  }));
+
+  it('should not prevent the submission event if an action is defined', inject((Scope scope) {
+    var element = $('<form name="myForm" action="..."></form>');
+
+    _.compile(element);
+    scope.$apply();
+
+    Event submissionEvent = new Event.eventType('CustomEvent', 'submit');
+
+    expect(submissionEvent.defaultPrevented).toBe(false);
+    element[0].dispatchEvent(submissionEvent);
+    expect(submissionEvent.defaultPrevented).toBe(false);
+  }));
+
+  it('should execute the ng-submit expression if provided upon form submission', inject((Scope scope) {
+    var element = $('<form name="myForm" ng-submit="submitted = true"></form>');
+
+    _.compile(element);
+    scope.$apply();
+
+    _.rootScope.submitted = false;
+
+    Event submissionEvent = new Event.eventType('CustomEvent', 'submit');
+    element[0].dispatchEvent(submissionEvent);
+
+    expect(_.rootScope.submitted).toBe(true);
+  }));
+});