Add unit tests for assignee component (#2801)

* Add unit tests for assignee components

* update tests

src/app/components_ngrx/assignee/assignee.component.spec.ts

@@ -0,0 +1,63 @@
+import { CommonModule } from '@angular/common';
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { By } from '@angular/platform-browser';
+import { RouterModule } from '@angular/router';
+import { BsDropdownConfig } from 'ngx-bootstrap/dropdown';
+import { TooltipConfig, TooltipModule } from 'ngx-bootstrap/tooltip';
+import { WidgetsModule } from 'ngx-widgets';
+import { UserAvatarModule } from './../../widgets/user-avatar/user-avatar.module';
+import { AssigneesComponent } from './assignee.component';
+
+
+describe('AssigneeComponent', () => {
+  let fixture: ComponentFixture<AssigneesComponent>,
+    comp: AssigneesComponent;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+        imports: [
+          CommonModule,
+          RouterModule,
+          TooltipModule.forRoot(),
+          UserAvatarModule,
+          WidgetsModule
+      ],
+      declarations: [
+        AssigneesComponent
+      ],
+      providers: [ TooltipConfig, BsDropdownConfig ]
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(AssigneesComponent);
+    comp = fixture.componentInstance;
+  });
+
+  it('should create the app', async(() => {
+    expect(comp).toBeTruthy();
+  }));
+
+  it('should show Unassigned if assignees less than 1', async(() => {
+    fixture.detectChanges();
+    comp.assigneeInput = [];
+    comp.overlapAvatar = false;
+    let assigneesDE  = fixture.debugElement.query(By.css('small.dib')).nativeElement;
+    expect(assigneesDE.innerText).toBe('Unassigned');
+  }));
+
+  it('should truncate if assignees greater than 3', async(() => {
+    comp.showFullName = false;
+    comp.truncateAfter = 3;
+    comp.assigneeInput = [
+      {'name': 'Name 1', avatar: 'https://avatars3.githubusercontent.com/u/34271052?v=4&s=25'},
+      {'name': 'Name 2', avatar: 'https://avatars3.githubusercontent.com/u/34271051?v=4&s=25'},
+      {'name': 'Name 3', avatar: 'https://avatars3.githubusercontent.com/u/34271053?v=4&s=25'},
+      {'name': 'Name 4', avatar: 'https://avatars3.githubusercontent.com/u/34271054?v=4&s=25'}
+   ];
+
+    fixture.detectChanges();
+    let assigneesDE  = fixture.debugElement.query(By.css('.f8-assignees')).nativeElement;
+    expect(assigneesDE.innerText).toContain('1+');
+  }));
+});