118220: Add liveRegionComponent & Service tests

src/app/shared/live-region/live-region.component.spec.ts

@@ -0,0 +1,57 @@
+import { LiveRegionComponent } from './live-region.component';
+import { ComponentFixture, waitForAsync, TestBed } from '@angular/core/testing';
+import { TranslateModule } from '@ngx-translate/core';
+import { LiveRegionService } from './live-region.service';
+import { of } from 'rxjs';
+import { By } from '@angular/platform-browser';
+
+describe('liveRegionComponent', () => {
+  let fixture: ComponentFixture<LiveRegionComponent>;
+  let liveRegionService: LiveRegionService;
+
+  beforeEach(waitForAsync(() => {
+    liveRegionService = jasmine.createSpyObj('liveRegionService', {
+      getMessages$: of(['message1', 'message2']),
+      getLiveRegionVisibility: false,
+      setLiveRegionVisibility: undefined,
+    });
+
+    void TestBed.configureTestingModule({
+      imports: [
+        TranslateModule.forRoot(),
+      ],
+      declarations: [LiveRegionComponent],
+      providers: [
+        { provide: LiveRegionService, useValue: liveRegionService },
+      ],
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(LiveRegionComponent);
+    fixture.detectChanges();
+  });
+
+  it('should contain the current live region messages', () => {
+    const messages = fixture.debugElement.queryAll(By.css('.live-region-message'));
+
+    expect(messages.length).toEqual(2);
+    expect(messages[0].nativeElement.textContent).toEqual('message1');
+    expect(messages[1].nativeElement.textContent).toEqual('message2');
+  });
+
+  it('should respect the live region visibility', () => {
+    const liveRegion = fixture.debugElement.query(By.css('.live-region'));
+    expect(liveRegion).toBeDefined();
+
+    const liveRegionHidden = fixture.debugElement.query(By.css('.visually-hidden'));
+    expect(liveRegionHidden).toBeDefined();
+
+    liveRegionService.getLiveRegionVisibility = jasmine.createSpy('getLiveRegionVisibility').and.returnValue(true);
+    fixture = TestBed.createComponent(LiveRegionComponent);
+    fixture.detectChanges();
+
+    const liveRegionVisible  = fixture.debugElement.query(By.css('.visually-hidden'));
+    expect(liveRegionVisible).toBeNull();
+  });
+});

src/app/shared/live-region/live-region.service.spec.ts

@@ -0,0 +1,140 @@
+import { LiveRegionService } from './live-region.service';
+import { fakeAsync, tick, flush } from '@angular/core/testing';
+
+describe('liveRegionService', () => {
+  let service: LiveRegionService;
+
+
+  beforeEach(() => {
+    service = new LiveRegionService();
+  });
+
+  describe('addMessage', () => {
+    it('should correctly add messages', () => {
+      expect(service.getMessages().length).toEqual(0);
+
+      service.addMessage('Message One');
+      expect(service.getMessages().length).toEqual(1);
+      expect(service.getMessages()[0]).toEqual('Message One');
+
+      service.addMessage('Message Two');
+      expect(service.getMessages().length).toEqual(2);
+      expect(service.getMessages()[1]).toEqual('Message Two');
+    });
+  });
+
+  describe('clearMessages', () => {
+    it('should clear the messages', () => {
+      expect(service.getMessages().length).toEqual(0);
+
+      service.addMessage('Message One');
+      service.addMessage('Message Two');
+      expect(service.getMessages().length).toEqual(2);
+
+      service.clear();
+      expect(service.getMessages().length).toEqual(0);
+    });
+  });
+
+  describe('messages$', () => {
+    it('should emit when a message is added and when a message is removed after the timeOut', fakeAsync(() => {
+      const results: string[][] = [];
+
+      service.getMessages$().subscribe((messages) => {
+        results.push(messages);
+      });
+
+      expect(results.length).toEqual(1);
+      expect(results[0]).toEqual([]);
+
+      service.addMessage('message');
+
+      tick();
+
+      expect(results.length).toEqual(2);
+      expect(results[1]).toEqual(['message']);
+
+      tick(service.getMessageTimeOutMs());
+
+      expect(results.length).toEqual(3);
+      expect(results[2]).toEqual([]);
+    }));
+
+    it('should only emit once when the messages are cleared', fakeAsync(() => {
+      const results: string[][] = [];
+
+      service.getMessages$().subscribe((messages) => {
+        results.push(messages);
+      });
+
+      expect(results.length).toEqual(1);
+      expect(results[0]).toEqual([]);
+
+      service.addMessage('Message One');
+      service.addMessage('Message Two');
+
+      tick();
+
+      expect(results.length).toEqual(3);
+      expect(results[2]).toEqual(['Message One', 'Message Two']);
+
+      service.clear();
+      flush();
+
+      expect(results.length).toEqual(4);
+      expect(results[3]).toEqual([]);
+    }));
+
+    it('should respect configured timeOut', fakeAsync(() => {
+      const results: string[][] = [];
+
+      service.getMessages$().subscribe((messages) => {
+        results.push(messages);
+      });
+
+      expect(results.length).toEqual(1);
+      expect(results[0]).toEqual([]);
+
+      const timeOutMs = 500;
+      service.setMessageTimeOutMs(timeOutMs);
+
+      service.addMessage('Message One');
+      tick(timeOutMs - 1);
+
+      expect(results.length).toEqual(2);
+      expect(results[1]).toEqual(['Message One']);
+
+      tick(1);
+
+      expect(results.length).toEqual(3);
+      expect(results[2]).toEqual([]);
+
+      const timeOutMsTwo = 50000;
+      service.setMessageTimeOutMs(timeOutMsTwo);
+
+      service.addMessage('Message Two');
+      tick(timeOutMsTwo - 1);
+
+      expect(results.length).toEqual(4);
+      expect(results[3]).toEqual(['Message Two']);
+
+      tick(1);
+
+      expect(results.length).toEqual(5);
+      expect(results[4]).toEqual([]);
+    }));
+  });
+
+  describe('liveRegionVisibility', () => {
+    it('should be false by default', () => {
+      expect(service.getLiveRegionVisibility()).toBeFalse();
+    });
+
+    it('should correctly update', () => {
+      service.setLiveRegionVisibility(true);
+      expect(service.getLiveRegionVisibility()).toBeTrue();
+      service.setLiveRegionVisibility(false);
+      expect(service.getLiveRegionVisibility()).toBeFalse();
+    });
+  });
+});