angular-cn/modules/@angular/platform-browser/test/testing_public_spec.ts

609 lines
21 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {CompilerConfig, ResourceLoader} from '@angular/compiler';
import {CUSTOM_ELEMENTS_SCHEMA, Component, Directive, Injectable, Input, NgModule, Pipe} from '@angular/core';
import {TestBed, async, fakeAsync, inject, tick, withModule} from '@angular/core/testing';
import {expect} from '@angular/platform-browser/testing/matchers';
import {stringify} from '../src/facade/lang';
// Services, and components for the tests.
@Component({selector: 'child-comp', template: `<span>Original {{childBinding}}</span>`})
@Injectable()
class ChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
@Component({selector: 'child-comp', template: `<span>Mock</span>`})
@Injectable()
class MockChildComp {
}
@Component({
selector: 'parent-comp',
template: `Parent(<child-comp></child-comp>)`,
})
@Injectable()
class ParentComp {
}
@Component({selector: 'my-if-comp', template: `MyIf(<span *ngIf="showMore">More</span>)`})
@Injectable()
class MyIfComp {
showMore: boolean = false;
}
@Component({selector: 'child-child-comp', template: `<span>ChildChild</span>`})
@Injectable()
class ChildChildComp {
}
@Component({
selector: 'child-comp',
template: `<span>Original {{childBinding}}(<child-child-comp></child-child-comp>)</span>`,
})
@Injectable()
class ChildWithChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
class FancyService {
value: string = 'real value';
getAsyncValue() { return Promise.resolve('async value'); }
getTimeoutValue() {
return new Promise(
(resolve, reject) => { setTimeout(() => { resolve('timeout value'); }, 10); });
}
}
class MockFancyService extends FancyService {
value: string = 'mocked out value';
}
@Component({
selector: 'my-service-comp',
providers: [FancyService],
template: `injected value: {{fancyService.value}}`
})
class TestProvidersComp {
constructor(private fancyService: FancyService) {}
}
@Component({
selector: 'my-service-comp',
viewProviders: [FancyService],
template: `injected value: {{fancyService.value}}`
})
class TestViewProvidersComp {
constructor(private fancyService: FancyService) {}
}
@Directive({selector: '[someDir]', host: {'[title]': 'someDir'}})
class SomeDirective {
@Input()
someDir: string;
}
@Pipe({name: 'somePipe'})
class SomePipe {
transform(value: string): any { return `transformed ${value}`; }
}
@Component({selector: 'comp', template: `<div [someDir]="'someValue' | somePipe"></div>`})
class CompUsingModuleDirectiveAndPipe {
}
@NgModule()
class SomeLibModule {
}
@Component({
selector: 'comp',
templateUrl: '/base/modules/@angular/platform-browser/test/static_assets/test.html'
})
class CompWithUrlTemplate {
}
export function main() {
describe('public testing API', () => {
describe('using the async helper', () => {
var actuallyDone: boolean;
beforeEach(() => { actuallyDone = false; });
afterEach(() => { expect(actuallyDone).toEqual(true); });
it('should run normal tests', () => { actuallyDone = true; });
it('should run normal async tests', (done: any /** TODO #9100 */) => {
setTimeout(() => {
actuallyDone = true;
done();
}, 0);
});
it('should run async tests with tasks',
async(() => { setTimeout(() => { actuallyDone = true; }, 0); }));
it('should run async tests with promises', async(() => {
var p = new Promise((resolve, reject) => { setTimeout(resolve, 10); });
p.then(() => { actuallyDone = true; });
}));
});
describe('using the test injector with the inject helper', () => {
describe('setting up Providers', () => {
beforeEach(() => {
TestBed.configureTestingModule(
{providers: [{provide: FancyService, useValue: new FancyService()}]});
it('should use set up providers',
inject([FancyService], (service: any /** TODO #9100 */) => {
expect(service.value).toEqual('real value');
}));
it('should wait until returned promises',
async(inject([FancyService], (service: any /** TODO #9100 */) => {
service.getAsyncValue().then(
(value: any /** TODO #9100 */) => { expect(value).toEqual('async value'); });
service.getTimeoutValue().then(
(value: any /** TODO #9100 */) => { expect(value).toEqual('timeout value'); });
})));
it('should allow the use of fakeAsync',
fakeAsync(inject([FancyService], (service: any /** TODO #9100 */) => {
var value: any /** TODO #9100 */;
service.getAsyncValue().then(function(val: any /** TODO #9100 */) { value = val; });
tick();
expect(value).toEqual('async value');
})));
it('should allow use of "done"', (done: any /** TODO #9100 */) => {
inject([FancyService], (service: any /** TODO #9100 */) => {
let count = 0;
let id = setInterval(() => {
count++;
if (count > 2) {
clearInterval(id);
done();
}
}, 5);
})(); // inject needs to be invoked explicitly with ().
});
describe('using beforeEach', () => {
beforeEach(inject([FancyService], (service: any /** TODO #9100 */) => {
service.value = 'value modified in beforeEach';
}));
it('should use modified providers',
inject([FancyService], (service: any /** TODO #9100 */) => {
expect(service.value).toEqual('value modified in beforeEach');
}));
});
describe('using async beforeEach', () => {
beforeEach(async(inject([FancyService], (service: any /** TODO #9100 */) => {
service.getAsyncValue().then(
(value: any /** TODO #9100 */) => { service.value = value; });
})));
it('should use asynchronously modified value',
inject([FancyService], (service: any /** TODO #9100 */) => {
expect(service.value).toEqual('async value');
}));
});
});
});
});
describe('using the test injector with modules', () => {
let moduleConfig = {
providers: [FancyService],
imports: [SomeLibModule],
declarations: [SomeDirective, SomePipe, CompUsingModuleDirectiveAndPipe],
};
describe('setting up a module', () => {
beforeEach(() => TestBed.configureTestingModule(moduleConfig));
it('should use set up providers', inject([FancyService], (service: FancyService) => {
expect(service.value).toEqual('real value');
}));
it('should be able to create any declared components', () => {
const compFixture = TestBed.createComponent(CompUsingModuleDirectiveAndPipe);
expect(compFixture.componentInstance).toBeAnInstanceOf(CompUsingModuleDirectiveAndPipe);
});
it('should use set up directives and pipes', () => {
const compFixture = TestBed.createComponent(CompUsingModuleDirectiveAndPipe);
let el = compFixture.debugElement;
compFixture.detectChanges();
expect(el.children[0].properties['title']).toBe('transformed someValue');
});
it('should use set up imported modules',
inject([SomeLibModule], (libModule: SomeLibModule) => {
expect(libModule).toBeAnInstanceOf(SomeLibModule);
}));
describe('provided schemas', () => {
@Component({template: '<some-element [someUnknownProp]="true"></some-element>'})
class ComponentUsingInvalidProperty {
}
beforeEach(() => {
TestBed.configureTestingModule(
{schemas: [CUSTOM_ELEMENTS_SCHEMA], declarations: [ComponentUsingInvalidProperty]});
});
it('should not error on unknown bound properties on custom elements when using the CUSTOM_ELEMENTS_SCHEMA',
() => {
expect(TestBed.createComponent(ComponentUsingInvalidProperty).componentInstance)
.toBeAnInstanceOf(ComponentUsingInvalidProperty);
});
});
});
describe('per test modules', () => {
it('should use set up providers',
withModule(moduleConfig).inject([FancyService], (service: FancyService) => {
expect(service.value).toEqual('real value');
}));
it('should use set up directives and pipes', withModule(moduleConfig, () => {
let compFixture = TestBed.createComponent(CompUsingModuleDirectiveAndPipe);
let el = compFixture.debugElement;
compFixture.detectChanges();
expect(el.children[0].properties['title']).toBe('transformed someValue');
}));
it('should use set up library modules',
withModule(moduleConfig).inject([SomeLibModule], (libModule: SomeLibModule) => {
expect(libModule).toBeAnInstanceOf(SomeLibModule);
}));
});
describe('components with template url', () => {
beforeEach(async(() => {
TestBed.configureTestingModule({declarations: [CompWithUrlTemplate]});
TestBed.compileComponents();
}));
it('should allow to createSync components with templateUrl after explicit async compilation',
() => {
let fixture = TestBed.createComponent(CompWithUrlTemplate);
expect(fixture.nativeElement).toHaveText('from external template\n');
});
});
describe('overwriting metadata', () => {
@Pipe({name: 'undefined'})
class SomePipe {
transform(value: string): string { return `transformed ${value}`; }
}
@Directive({selector: '[undefined]'})
class SomeDirective {
someProp = 'hello';
}
@Component({selector: 'comp', template: 'someText'})
class SomeComponent {
}
@Component({selector: 'comp', template: 'someOtherText'})
class SomeOtherComponent {
}
@NgModule({declarations: [SomeComponent, SomeDirective, SomePipe]})
class SomeModule {
}
beforeEach(() => { TestBed.configureTestingModule({imports: [SomeModule]}); });
describe('module', () => {
beforeEach(() => {
TestBed.overrideModule(SomeModule, {set: {declarations: [SomeOtherComponent]}});
});
it('should work', () => {
expect(TestBed.createComponent(SomeOtherComponent).componentInstance)
.toBeAnInstanceOf(SomeOtherComponent);
});
});
describe('component', () => {
beforeEach(() => {
TestBed.overrideComponent(
SomeComponent, {set: {selector: 'comp', template: 'newText'}});
});
it('should work', () => {
expect(TestBed.createComponent(SomeComponent).nativeElement).toHaveText('newText');
});
});
describe('directive', () => {
beforeEach(() => {
TestBed
.overrideComponent(
SomeComponent, {set: {selector: 'comp', template: `<div someDir></div>`}})
.overrideDirective(
SomeDirective, {set: {selector: '[someDir]', host: {'[title]': 'someProp'}}});
});
it('should work', () => {
const compFixture = TestBed.createComponent(SomeComponent);
compFixture.detectChanges();
expect(compFixture.debugElement.children[0].properties['title']).toEqual('hello');
});
});
describe('pipe', () => {
beforeEach(() => {
TestBed
.overrideComponent(
SomeComponent, {set: {selector: 'comp', template: `{{'hello' | somePipe}}`}})
.overridePipe(SomePipe, {set: {name: 'somePipe'}});
});
it('should work', () => {
const compFixture = TestBed.createComponent(SomeComponent);
compFixture.detectChanges();
expect(compFixture.nativeElement).toHaveText('transformed hello');
});
});
});
describe('setting up the compiler', () => {
describe('providers', () => {
beforeEach(() => {
let resourceLoaderGet = jasmine.createSpy('resourceLoaderGet')
.and.returnValue(Promise.resolve('Hello world!'));
TestBed.configureTestingModule({declarations: [CompWithUrlTemplate]});
TestBed.configureCompiler(
{providers: [{provide: ResourceLoader, useValue: {get: resourceLoaderGet}}]});
});
it('should use set up providers', fakeAsync(() => {
TestBed.compileComponents();
tick();
let compFixture = TestBed.createComponent(CompWithUrlTemplate);
expect(compFixture.nativeElement).toHaveText('Hello world!');
}));
});
describe('useJit true', () => {
beforeEach(() => { TestBed.configureCompiler({useJit: true}); });
it('should set the value into CompilerConfig',
inject([CompilerConfig], (config: CompilerConfig) => {
expect(config.useJit).toBe(true);
}));
});
describe('useJit false', () => {
beforeEach(() => { TestBed.configureCompiler({useJit: false}); });
it('should set the value into CompilerConfig',
inject([CompilerConfig], (config: CompilerConfig) => {
expect(config.useJit).toBe(false);
}));
});
});
});
describe('errors', () => {
var originalJasmineIt: any;
var originalJasmineBeforeEach: any;
var patchJasmineIt = () => {
var resolve: (result: any) => void;
var reject: (error: any) => void;
var promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
originalJasmineIt = jasmine.getEnv().it;
jasmine.getEnv().it = (description: string, fn: any /** TODO #9100 */) => {
var done = () => { resolve(null); };
(<any>done).fail = (err: any /** TODO #9100 */) => { reject(err); };
fn(done);
return null;
};
return promise;
};
var restoreJasmineIt = () => { jasmine.getEnv().it = originalJasmineIt; };
var patchJasmineBeforeEach = () => {
var resolve: (result: any) => void;
var reject: (error: any) => void;
var promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
originalJasmineBeforeEach = jasmine.getEnv().beforeEach;
jasmine.getEnv().beforeEach = (fn: any) => {
var done = () => { resolve(null); };
(<any>done).fail = (err: any /** TODO #9100 */) => { reject(err); };
fn(done);
return null;
};
return promise;
};
var restoreJasmineBeforeEach =
() => { jasmine.getEnv().beforeEach = originalJasmineBeforeEach; };
it('should fail when an asynchronous error is thrown', (done: any /** TODO #9100 */) => {
var itPromise = patchJasmineIt();
var barError = new Error('bar');
it('throws an async error',
async(inject([], () => { setTimeout(() => { throw barError; }, 0); })));
itPromise.then(
() => { done.fail('Expected test to fail, but it did not'); },
(err) => {
expect(err).toEqual(barError);
done();
});
restoreJasmineIt();
});
it('should fail when a returned promise is rejected', (done: any /** TODO #9100 */) => {
var itPromise = patchJasmineIt();
it('should fail with an error from a promise', async(inject([], () => {
var reject: (error: any) => void;
var promise = new Promise((_, rej) => { reject = rej; });
var p = promise.then(() => { expect(1).toEqual(2); });
reject('baz');
return p;
})));
itPromise.then(
() => { done.fail('Expected test to fail, but it did not'); },
(err) => {
expect(err.message).toEqual('Uncaught (in promise): baz');
done();
});
restoreJasmineIt();
});
describe('components', () => {
let resourceLoaderGet: jasmine.Spy;
beforeEach(() => {
resourceLoaderGet = jasmine.createSpy('resourceLoaderGet')
.and.returnValue(Promise.resolve('Hello world!'));
TestBed.configureCompiler(
{providers: [{provide: ResourceLoader, useValue: {get: resourceLoaderGet}}]});
});
it('should report an error for declared components with templateUrl which never call TestBed.compileComponents',
() => {
var itPromise = patchJasmineIt();
expect(
() => it(
'should fail', withModule(
{declarations: [CompWithUrlTemplate]},
() => { TestBed.createComponent(CompWithUrlTemplate); })))
.toThrowError(
`This test module uses the component ${stringify(CompWithUrlTemplate)} which is using a "templateUrl", but they were never compiled. ` +
`Please call "TestBed.compileComponents" before your test.`);
restoreJasmineIt();
});
});
it('should error on unknown bound properties on custom elements by default', () => {
@Component({template: '<some-element [someUnknownProp]="true"></some-element>'})
class ComponentUsingInvalidProperty {
}
var itPromise = patchJasmineIt();
expect(
() =>
it('should fail',
withModule(
{declarations: [ComponentUsingInvalidProperty]},
() => { TestBed.createComponent(ComponentUsingInvalidProperty); })))
.toThrowError(/Can't bind to 'someUnknownProp'/);
restoreJasmineIt();
});
});
describe('creating components', function() {
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [
ChildComp,
MyIfComp,
ChildChildComp,
ParentComp,
TestProvidersComp,
TestViewProvidersComp,
]
});
});
it('should instantiate a component with valid DOM', async(() => {
var fixture = TestBed.createComponent(ChildComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('Original Child');
}));
it('should allow changing members of the component', async(() => {
var componentFixture = TestBed.createComponent(MyIfComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf()');
componentFixture.componentInstance.showMore = true;
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf(More)');
}));
it('should override a template', async(() => {
TestBed.overrideComponent(ChildComp, {set: {template: '<span>Mock</span>'}});
let componentFixture = TestBed.createComponent(ChildComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Mock');
}));
it('should override a provider', async(() => {
TestBed.overrideComponent(
TestProvidersComp,
{set: {providers: [{provide: FancyService, useClass: MockFancyService}]}});
var componentFixture = TestBed.createComponent(TestProvidersComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('injected value: mocked out value');
}));
it('should override a viewProvider', async(() => {
TestBed.overrideComponent(
TestViewProvidersComp,
{set: {viewProviders: [{provide: FancyService, useClass: MockFancyService}]}});
var componentFixture = TestBed.createComponent(TestViewProvidersComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('injected value: mocked out value');
}));
});
describe('using alternate components', () => {
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [
MockChildComp,
ParentComp,
]
});
});
it('should override component dependencies', async(() => {
let componentFixture = TestBed.createComponent(ParentComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Parent(Mock)');
}));
});
});
}