angular-cn/modules/angular2/test/testing/testing_public_spec.ts

484 lines
17 KiB
TypeScript
Raw Normal View History

import {
it,
iit,
xit,
describe,
ddescribe,
xdescribe,
expect,
fakeAsync,
tick,
beforeEach,
inject,
injectAsync,
withProviders,
beforeEachProviders,
TestComponentBuilder
} from 'angular2/testing';
import {Injectable, bind} from 'angular2/core';
import {NgIf} from 'angular2/common';
import {Directive, Component, View, ViewMetadata} from 'angular2/core';
import {PromiseWrapper} from 'angular2/src/facade/promise';
import {XHR} from 'angular2/src/compiler/xhr';
import {XHRImpl} from 'angular2/src/platform/browser/xhr_impl';
// Services, and components for the tests.
@Component({selector: 'child-comp'})
@View({template: `<span>Original {{childBinding}}</span>`, directives: []})
@Injectable()
class ChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
@Component({selector: 'child-comp'})
@View({template: `<span>Mock</span>`})
@Injectable()
class MockChildComp {
}
@Component({selector: 'parent-comp'})
@View({template: `Parent(<child-comp></child-comp>)`, directives: [ChildComp]})
@Injectable()
class ParentComp {
}
@Component({selector: 'my-if-comp'})
@View({template: `MyIf(<span *ngIf="showMore">More</span>)`, directives: [NgIf]})
@Injectable()
class MyIfComp {
showMore: boolean = false;
}
@Component({selector: 'child-child-comp'})
@View({template: `<span>ChildChild</span>`})
@Injectable()
class ChildChildComp {
}
@Component({selector: 'child-comp'})
@View({
template: `<span>Original {{childBinding}}(<child-child-comp></child-child-comp>)</span>`,
directives: [ChildChildComp]
})
@Injectable()
class ChildWithChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
@Component({selector: 'child-child-comp'})
@View({template: `<span>ChildChild Mock</span>`})
@Injectable()
class MockChildChildComp {
}
class FancyService {
value: string = 'real value';
getAsyncValue() { return Promise.resolve('async value'); }
}
class MockFancyService extends FancyService {
value: string = 'mocked out value';
}
@Component({selector: 'my-service-comp', providers: [FancyService]})
@View({template: `injected value: {{fancyService.value}}`})
class TestProvidersComp {
constructor(private fancyService: FancyService) {}
}
@Component({selector: 'my-service-comp', viewProviders: [FancyService]})
@View({template: `injected value: {{fancyService.value}}`})
class TestViewProvidersComp {
constructor(private fancyService: FancyService) {}
}
@Component({selector: 'external-template-comp'})
@View({templateUrl: '/base/modules/angular2/test/testing/static_assets/test.html'})
class ExternalTemplateComp {
}
@Component({selector: 'bad-template-comp'})
@View({templateUrl: 'non-existant.html'})
class BadTemplateUrl {
}
export function main() {
describe('angular2 jasmine matchers', () => {
describe('toHaveCssClass', () => {
it('should assert that the CSS class is present', () => {
var el = document.createElement('div');
el.classList.add('matias');
expect(el).toHaveCssClass('matias');
});
it('should assert that the CSS class is not present', () => {
var el = document.createElement('div');
el.classList.add('matias');
expect(el).not.toHaveCssClass('fatias');
});
});
describe('toHaveCssStyle', () => {
it('should assert that the CSS style is present', () => {
var el = document.createElement('div');
expect(el).not.toHaveCssStyle('width');
el.style.setProperty('width', '100px');
expect(el).toHaveCssStyle('width');
});
it('should assert that the styles are matched against the element', () => {
var el = document.createElement('div');
expect(el).not.toHaveCssStyle({width: '100px', height: '555px'});
el.style.setProperty('width', '100px');
expect(el).toHaveCssStyle({width: '100px'});
expect(el).not.toHaveCssStyle({width: '100px', height: '555px'});
el.style.setProperty('height', '555px');
expect(el).toHaveCssStyle({height: '555px'});
expect(el).toHaveCssStyle({width: '100px', height: '555px'});
});
});
});
describe('using the test injector with the inject helper', () => {
it('should run normal tests', () => { expect(true).toEqual(true); });
it('should run normal async tests', (done) => {
setTimeout(() => {
expect(true).toEqual(true);
done();
}, 0);
});
it('provides a real XHR instance',
inject([XHR], (xhr) => { expect(xhr).toBeAnInstanceOf(XHRImpl); }));
describe('setting up Providers', () => {
beforeEachProviders(() => [bind(FancyService).toValue(new FancyService())]);
it('should use set up providers',
inject([FancyService], (service) => { expect(service.value).toEqual('real value'); }));
it('should wait until returned promises', injectAsync([FancyService], (service) => {
return service.getAsyncValue().then(
(value) => { expect(value).toEqual('async value'); });
}));
it('should allow the use of fakeAsync',
inject([FancyService], fakeAsync((service) => {
var value;
service.getAsyncValue().then(function(val) { value = val; });
tick();
expect(value).toEqual('async value');
})));
describe('using beforeEach', () => {
beforeEach(inject([FancyService],
(service) => { service.value = 'value modified in beforeEach'; }));
it('should use modified providers', inject([FancyService], (service) => {
expect(service.value).toEqual('value modified in beforeEach');
}));
});
describe('using async beforeEach', () => {
beforeEach(injectAsync([FancyService], (service) => {
return service.getAsyncValue().then((value) => { service.value = value; });
}));
it('should use asynchronously modified value',
inject([FancyService], (service) => { expect(service.value).toEqual('async value'); }));
});
});
describe('per test providers', () => {
it('should allow per test providers',
withProviders(() => [bind(FancyService).toValue(new FancyService())])
.inject([FancyService],
(service) => { expect(service.value).toEqual('real value'); }));
});
});
describe('errors', () => {
var originalJasmineIt: any;
var originalJasmineBeforeEach: any;
var patchJasmineIt = () => {
var deferred = PromiseWrapper.completer();
originalJasmineIt = jasmine.getEnv().it;
jasmine.getEnv().it = (description: string, fn) => {
var done = () => { deferred.resolve() };
(<any>done).fail = (err) => { deferred.reject(err) };
fn(done);
return null;
};
return deferred.promise;
};
var restoreJasmineIt = () => { jasmine.getEnv().it = originalJasmineIt; };
var patchJasmineBeforeEach = () => {
var deferred = PromiseWrapper.completer();
originalJasmineBeforeEach = jasmine.getEnv().beforeEach;
jasmine.getEnv().beforeEach = (fn: any) => {
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'); }));
itPromise.then(() => { done.fail('Expected function to throw, but it did not'); }, (err) => {
expect(err.message).toEqual('foo');
done();
});
restoreJasmineIt();
});
// TODO(juliemr): reenable this test when we are using a test zone and can capture this error.
xit('should fail when an asynchronous error is thrown', (done) => {
var itPromise = patchJasmineIt();
it('throws an async error',
injectAsync([], () => { setTimeout(() => { throw new Error('bar'); }, 0); }));
itPromise.then(() => { done.fail('Expected test to fail, but it did not'); }, (err) => {
expect(err.message).toEqual('bar');
done();
});
restoreJasmineIt();
});
it('should fail when a returned promise is rejected', (done) => {
var itPromise = patchJasmineIt();
it('should fail with an error from a promise', injectAsync([], () => {
var deferred = PromiseWrapper.completer();
var p = deferred.promise.then(() => { expect(1).toEqual(2); });
deferred.reject('baz');
return p;
}));
itPromise.then(() => { done.fail('Expected test to fail, but it did not'); }, (err) => {
expect(err).toEqual('baz');
done();
});
restoreJasmineIt();
});
it('should fail when an XHR fails', (done) => {
var itPromise = patchJasmineIt();
it('should fail with an error from a promise',
injectAsync([TestComponentBuilder], (tcb) => { return tcb.createAsync(BadTemplateUrl); }));
itPromise.then(() => { done.fail('Expected test to fail, but it did not'); }, (err) => {
expect(err).toEqual('Failed to load non-existant.html');
done();
});
restoreJasmineIt();
}, 10000);
describe('using beforeEachProviders', () => {
beforeEachProviders(() => [bind(FancyService).toValue(new FancyService())]);
beforeEach(
inject([FancyService], (service) => { expect(service.value).toEqual('real value'); }));
describe('nested beforeEachProviders', () => {
it('should fail when the injector has already been used', () => {
patchJasmineBeforeEach();
expect(() => {
beforeEachProviders(() => [bind(FancyService).toValue(new FancyService())]);
})
.toThrowError('beforeEachProviders was called after the injector had been used ' +
'in a beforeEach or it block. This invalidates the test injector');
restoreJasmineBeforeEach();
});
});
});
});
describe('test component builder', function() {
it('should instantiate a component with valid DOM',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.createAsync(ChildComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('Original Child');
});
}));
it('should allow changing members of the component',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.createAsync(MyIfComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('MyIf()');
componentFixture.debugElement.componentInstance.showMore = true;
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('MyIf(More)');
});
}));
it('should override a template',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideTemplate(MockChildComp, '<span>Mock</span>')
.createAsync(MockChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('Mock');
});
}));
it('should override a view',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideView(
ChildComp,
new ViewMetadata({template: '<span>Modified {{childBinding}}</span>'}))
.createAsync(ChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('Modified Child');
});
}));
it('should override component dependencies',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideDirective(ParentComp, ChildComp, MockChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement).toHaveText('Parent(Mock)');
});
}));
it("should override child component's dependencies",
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideDirective(ParentComp, ChildComp, ChildWithChildComp)
.overrideDirective(ChildWithChildComp, ChildChildComp, MockChildChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement)
.toHaveText('Parent(Original Child(ChildChild Mock))');
});
}));
it('should override a provider',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideProviders(TestProvidersComp,
[bind(FancyService).toClass(MockFancyService)])
.createAsync(TestProvidersComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement)
.toHaveText('injected value: mocked out value');
});
}));
it('should override a viewProvider',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.overrideViewProviders(TestViewProvidersComp,
[bind(FancyService).toClass(MockFancyService)])
.createAsync(TestViewProvidersComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement)
.toHaveText('injected value: mocked out value');
});
}));
it('should allow an external templateUrl',
injectAsync([TestComponentBuilder], (tcb: TestComponentBuilder) => {
return tcb.createAsync(ExternalTemplateComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.debugElement.nativeElement)
.toHaveText('from external template\n');
});
}), 10000); // Long timeout here because this test makes an actual XHR, and is slow on Edge.
});
}