angular-docs-cn/modules/@angular/compiler/test/directive_resolver_mock_spe...

130 lines
5.4 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 {Component, ComponentMetadata, Injector, ViewMetadata} from '@angular/core';
import {beforeEach, ddescribe, describe, expect, iit, inject, it} from '@angular/core/testing/testing_internal';
import {isBlank, stringify} from '../src/facade/lang';
import {MockDirectiveResolver} from '../testing';
export function main() {
describe('MockDirectiveResolver', () => {
var dirResolver: MockDirectiveResolver;
beforeEach(inject([Injector], (injector: Injector) => {
dirResolver = new MockDirectiveResolver(injector);
}));
describe('Directive overriding', () => {
it('should fallback to the default DirectiveResolver when templates are not overridden',
() => {
var ngModule = dirResolver.resolve(SomeComponent);
expect(ngModule.selector).toEqual('cmp');
});
it('should allow overriding the @Directive', () => {
dirResolver.setDirective(
SomeComponent, new ComponentMetadata({selector: 'someOtherSelector'}));
var metadata = dirResolver.resolve(SomeComponent);
expect(metadata.selector).toEqual('someOtherSelector');
});
});
describe('View overriding', () => {
it('should fallback to the default ViewResolver when templates are not overridden', () => {
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('template');
expect(view.directives).toEqual([SomeDirective]);
});
it('should allow overriding the @View', () => {
dirResolver.setView(SomeComponent, new ViewMetadata({template: 'overridden template'}));
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('overridden template');
expect(isBlank(view.directives)).toBe(true);
});
it('should allow overriding a view after it has been resolved', () => {
dirResolver.resolve(SomeComponent);
dirResolver.setView(SomeComponent, new ViewMetadata({template: 'overridden template'}));
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('overridden template');
expect(isBlank(view.directives)).toBe(true);
});
});
describe('inline template definition overriding', () => {
it('should allow overriding the default template', () => {
dirResolver.setInlineTemplate(SomeComponent, 'overridden template');
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('overridden template');
expect(view.directives).toEqual([SomeDirective]);
});
it('should allow overriding an overridden @View', () => {
dirResolver.setView(SomeComponent, new ViewMetadata({template: 'overridden template'}));
dirResolver.setInlineTemplate(SomeComponent, 'overridden template x 2');
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('overridden template x 2');
});
it('should allow overriding a view after it has been resolved', () => {
dirResolver.resolve(SomeComponent);
dirResolver.setInlineTemplate(SomeComponent, 'overridden template');
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.template).toEqual('overridden template');
});
});
describe('Directive overriding', () => {
it('should allow overriding a directive from the default view', () => {
dirResolver.overrideViewDirective(SomeComponent, SomeDirective, SomeOtherDirective);
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.directives.length).toEqual(1);
expect(view.directives[0]).toBe(SomeOtherDirective);
});
it('should allow overriding a directive from an overridden @View', () => {
dirResolver.setView(SomeComponent, new ViewMetadata({directives: [SomeOtherDirective]}));
dirResolver.overrideViewDirective(SomeComponent, SomeOtherDirective, SomeComponent);
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.directives.length).toEqual(1);
expect(view.directives[0]).toBe(SomeComponent);
});
it('should throw when the overridden directive is not present', () => {
dirResolver.overrideViewDirective(SomeComponent, SomeOtherDirective, SomeDirective);
expect(() => { dirResolver.resolve(SomeComponent); })
.toThrowError(
`Overriden directive ${stringify(SomeOtherDirective)} not found in the template of ${stringify(SomeComponent)}`);
});
it('should allow overriding a directive after its view has been resolved', () => {
dirResolver.resolve(SomeComponent);
dirResolver.overrideViewDirective(SomeComponent, SomeDirective, SomeOtherDirective);
var view = <ComponentMetadata>dirResolver.resolve(SomeComponent);
expect(view.directives.length).toEqual(1);
expect(view.directives[0]).toBe(SomeOtherDirective);
});
});
});
}
class SomeDirective {}
@Component({
selector: 'cmp',
template: 'template',
directives: [SomeDirective],
})
class SomeComponent {
}
class SomeOtherDirective {}