angular/aio/src/testing/doc-viewer-utils.ts
2019-10-10 13:56:14 -07:00

99 lines
3.8 KiB
TypeScript

import { Component, NgModule, ViewChild } from '@angular/core';
import { Title, Meta } from '@angular/platform-browser';
import { Observable } from 'rxjs';
import { DocumentContents } from 'app/documents/document.service';
import { DocViewerComponent } from 'app/layout/doc-viewer/doc-viewer.component';
import { Logger } from 'app/shared/logger.service';
import { TocService } from 'app/shared/toc.service';
import { MockLogger } from 'testing/logger.service';
import { ElementsLoader } from 'app/custom-elements/elements-loader';
////////////////////////////////////////////////////////////////////////////////////////////////////
/// `TestDocViewerComponent` (for exposing internal `DocViewerComponent` methods as public). ///
/// Only used for type-casting; the actual implementation is irrelevant. ///
////////////////////////////////////////////////////////////////////////////////////////////////////
export class TestDocViewerComponent extends DocViewerComponent {
currViewContainer: HTMLElement;
nextViewContainer: HTMLElement;
// Only used for type-casting; the actual implementation is irrelevant.
prepareTitleAndToc(_targetElem: HTMLElement, _docId: string): () => void { return null as any; }
// Only used for type-casting; the actual implementation is irrelevant.
render(_doc: DocumentContents): Observable<void> { return null as any; }
// Only used for type-casting; the actual implementation is irrelevant.
swapViews(_onInsertedCb?: () => void): Observable<void> { return null as any; }
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// `TestModule` and `TestParentComponent`. ///
////////////////////////////////////////////////////////////////////////////////////////////////////
// Test parent component.
@Component({
selector: 'aio-test',
template: '<aio-doc-viewer [doc]="currentDoc">Test Component</aio-doc-viewer>',
})
export class TestParentComponent {
currentDoc?: DocumentContents|null;
@ViewChild(DocViewerComponent, {static: true}) docViewer: DocViewerComponent;
}
// Mock services.
export class MockTitle {
setTitle = jasmine.createSpy('Title#reset');
}
export class MockMeta {
addTag = jasmine.createSpy('Meta#addTag');
removeTag = jasmine.createSpy('Meta#removeTag');
}
export class MockTocService {
genToc = jasmine.createSpy('TocService#genToc');
reset = jasmine.createSpy('TocService#reset');
}
export class MockElementsLoader {
loadContainedCustomElements =
jasmine.createSpy('MockElementsLoader#loadContainedCustomElements');
}
@NgModule({
declarations: [
DocViewerComponent,
TestParentComponent,
],
providers: [
{ provide: Logger, useClass: MockLogger },
{ provide: Title, useClass: MockTitle },
{ provide: Meta, useClass: MockMeta },
{ provide: TocService, useClass: MockTocService },
{ provide: ElementsLoader, useClass: MockElementsLoader },
],
})
export class TestModule { }
////////////////////////////////////////////////////////////////////////////////////////////////////
/// An observable with spies to test subscribing/unsubscribing. ///
////////////////////////////////////////////////////////////////////////////////////////////////////
export class ObservableWithSubscriptionSpies<T = void> extends Observable<T> {
unsubscribeSpies: jasmine.Spy[] = [];
subscribeSpy = spyOn(this as Observable<T>, 'subscribe').and.callFake((...args: any[]) => {
const subscription = super.subscribe(...args);
const unsubscribeSpy = spyOn(subscription, 'unsubscribe').and.callThrough();
this.unsubscribeSpies.push(unsubscribeSpy);
return subscription;
});
constructor(subscriber = () => undefined) { super(subscriber); }
}