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refactor(testing): reenable injectAsync checking for return value

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Before #5375, injectAsync would check the return value and fail
if it was not a promise, to help users remember that they need to
return a promise from an async test. #5375 removed that with the
introduction of the testing zone.

This un-deprecates `injectAsync` until we can resolve
https://github.com/angular/angular/issues/5515.

To be clear, this means that `inject` and `injectAsync` are now
identical except that `injectAsync` will fail if the test
does not return a promise, and `inject` will fail if the test
returns any value.

Closes #5721
This commit is contained in:
Julie Ralph
2015-12-08 16:44:04 -08:00
parent d3a79db48d
commit b803ecf7e7
3 changed files with 144 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modules/angular2/test/testing/testing_public_spec.ts
+86 -27
View File
@@ -9,6 +9,7 @@ import {
tick,
beforeEach,
inject,
injectAsync,
beforeEachProviders,
TestComponentBuilder
} from 'angular2/testing';
@@ -153,8 +154,9 @@ export function main() {
it('should use set up providers',
inject([FancyService], (service) => { expect(service.value).toEqual('real value'); }));
it('should wait until returned promises', inject([FancyService], (service) => {
service.getAsyncValue().then((value) => { expect(value).toEqual('async value'); });
it('should wait until returned promises', injectAsync([FancyService], (service) => {
return service.getAsyncValue().then(
(value) => { expect(value).toEqual('async value'); });
}));
describe('using beforeEach', () => {
@@ -167,8 +169,8 @@ export function main() {
});
describe('using async beforeEach', () => {
beforeEach(inject([FancyService], (service) => {
service.getAsyncValue().then((value) => { service.value = value; });
beforeEach(injectAsync([FancyService], (service) => {
return service.getAsyncValue().then((value) => { service.value = value; });
}));
it('should use asynchronously modified value',
@@ -196,18 +198,70 @@ export function main() {
var restoreJasmineIt = () => { jasmine.getEnv().it = originalJasmineIt; };
var patchJasmineBeforeEach = () => {
var deferred = PromiseWrapper.completer();
originalJasmineBeforeEach = jasmine.getEnv().beforeEach;
jasmine.getEnv().beforeEach = (fn: any) => {
var done = () => {};
(<any>done).fail = (err) => { throw new Error(err) };
var done = () => { deferred.resolve() };
(<any>done).fail = (err) => { deferred.reject(err) };
fn(done);
return null;
}
};
return deferred.promise;
};
var restoreJasmineBeforeEach =
() => { jasmine.getEnv().beforeEach = originalJasmineBeforeEach; }
it('injectAsync should fail when return was forgotten in it', (done) => {
var itPromise = patchJasmineIt();
it('forgets to return a proimse', injectAsync([], () => { return true; }));
itPromise.then(() => { done.fail('Expected function to throw, but it did not'); }, (err) => {
expect(err).toEqual(
'Error: injectAsync was expected to return a promise, but the returned value was: true');
done();
});
restoreJasmineIt();
});
it('inject should fail if a value was returned', (done) => {
var itPromise = patchJasmineIt();
it('returns a value', inject([], () => { return true; }));
itPromise.then(() => { done.fail('Expected function to throw, but it did not'); }, (err) => {
expect(err).toEqual(
'Error: inject returned a value. Did you mean to use injectAsync? Returned value was: true');
done();
});
restoreJasmineIt();
});
it('injectAsync should fail when return was forgotten in beforeEach', (done) => {
var beforeEachPromise = patchJasmineBeforeEach();
beforeEach(injectAsync([], () => { return true; }));
beforeEachPromise.then(
() => { done.fail('Expected function to throw, but it did not'); }, (err) => {
expect(err).toEqual(
'Error: injectAsync was expected to return a promise, but the returned value was: true');
done();
});
restoreJasmineBeforeEach();
});
it('inject should fail if a value was returned in beforeEach', (done) => {
var beforeEachPromise = patchJasmineBeforeEach();
beforeEach(inject([], () => { return true; }));
beforeEachPromise.then(
() => { done.fail('Expected function to throw, but it did not'); }, (err) => {
expect(err).toEqual(
'Error: inject returned a value. Did you mean to use injectAsync? Returned value was: true');
done();
});
restoreJasmineBeforeEach();
});
it('should fail when an error occurs inside inject', (done) => {
var itPromise = patchJasmineIt();
it('throws an error', inject([], () => { throw new Error('foo'); }));
@@ -235,7 +289,7 @@ export function main() {
it('should fail when a returned promise is rejected', (done) => {
var itPromise = patchJasmineIt();
it('should fail with an error from a promise', inject([], () => {
it('should fail with an error from a promise', injectAsync([], () => {
var deferred = PromiseWrapper.completer();
var p = deferred.promise.then(() => { expect(1).toEqual(2); });
@@ -259,8 +313,8 @@ export function main() {
describe('nested beforeEachProviders', () => {
it('should fail when the injector has already been used', () => {
patchJasmineBeforeEach();
expect(() => {
patchJasmineBeforeEach();
beforeEachProviders(() => [bind(FancyService).toValue(new FancyService())]);
})
.toThrowError('beforeEachProviders was called after the injector had been used ' +
@@ -273,9 +327,9 @@ export function main() {
describe('test component builder', function() {
it('should instantiate a component with valid DOM',
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.createAsync(ChildComp).then((componentFixture) => {
return tcb.createAsync(ChildComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('Original Child');
@@ -283,9 +337,9 @@ export function main() {
}));
it('should allow changing members of the component',
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.createAsync(MyIfComp).then((componentFixture) => {
return tcb.createAsync(MyIfComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('MyIf()');
@@ -295,9 +349,10 @@ export function main() {
});
}));
it('should override a template', inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
it('should override a template',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideTemplate(MockChildComp, '<span>Mock</span>')
return tcb.overrideTemplate(MockChildComp, '<span>Mock</span>')
.createAsync(MockChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
@@ -306,10 +361,12 @@ export function main() {
});
}));
it('should override a view', inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
it('should override a view',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideView(ChildComp,
new ViewMetadata({template: '<span>Modified {{childBinding}}</span>'}))
return tcb.overrideView(
ChildComp,
new ViewMetadata({template: '<span>Modified {{childBinding}}</span>'}))
.createAsync(ChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
@@ -319,9 +376,9 @@ export function main() {
}));
it('should override component dependencies',
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideDirective(ParentComp, ChildComp, MockChildComp)
return tcb.overrideDirective(ParentComp, ChildComp, MockChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
componentFixture.detectChanges();
@@ -332,9 +389,9 @@ export function main() {
it("should override child component's dependencies",
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideDirective(ParentComp, ChildComp, ChildWithChildComp)
return tcb.overrideDirective(ParentComp, ChildComp, ChildWithChildComp)
.overrideDirective(ChildWithChildComp, ChildChildComp, MockChildChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
@@ -345,9 +402,11 @@ export function main() {
});
}));
it('should override a provider', inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
it('should override a provider',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideProviders(TestProvidersComp, [bind(FancyService).toClass(MockFancyService)])
return tcb.overrideProviders(TestProvidersComp,
[bind(FancyService).toClass(MockFancyService)])
.createAsync(TestProvidersComp)
.then((componentFixture) => {
componentFixture.detectChanges();
@@ -358,10 +417,10 @@ export function main() {
it('should override a viewProvider',
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
tcb.overrideViewProviders(TestViewProvidersComp,
[bind(FancyService).toClass(MockFancyService)])
return tcb.overrideViewProviders(TestViewProvidersComp,
[bind(FancyService).toClass(MockFancyService)])
.createAsync(TestViewProvidersComp)
.then((componentFixture) => {
componentFixture.detectChanges();