[ADF-1532] Assignee typeahead in start task form (#2839)

* people module directory restructuring

* Extract PeopleSearchFieldComponent to reuse most part of it

* Transform PeopleSearchFieldComponent to the form we want to reuse

* People selector component, first try

* Remove material grid from start-task.component, first part

* Styling and i18n

* clear button for deleting the selected assignee

* Remove people preloading, remove combobox and update assigneeId

* Fix existing tests

* Add new tests

* Final css fixes

lib/process-services/people/components/people-selector/people-selector.component.spec.ts

@@ -0,0 +1,113 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { MatButtonModule, MatInputModule } from '@angular/material';
+import { LogService, TranslationService, TranslationMock, PeopleProcessService } from '@alfresco/adf-core';
+import { PeopleSearchFieldComponent } from '../people-search-field/people-search-field.component';
+import { PeopleListComponent } from '../people-list/people-list.component';
+import { PeopleSelectorComponent } from './people-selector.component';
+import { Observable } from 'rxjs/Observable';
+import { By } from '@angular/platform-browser';
+
+describe('PeopleSelectorComponent', () => {
+
+    let component: PeopleSelectorComponent;
+    let fixture: ComponentFixture<PeopleSelectorComponent>;
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            imports: [
+                MatButtonModule,
+                MatInputModule
+            ],
+            declarations: [
+                PeopleListComponent,
+                PeopleSearchFieldComponent,
+                PeopleSelectorComponent
+            ],
+            providers: [
+                { provide: TranslationService, useClass: TranslationMock },
+                { provide: LogService, useValue: {error: () => {} }},
+                PeopleProcessService
+            ]
+        }).compileComponents();
+    }));
+
+    beforeEach(() => {
+        fixture = TestBed.createComponent(PeopleSelectorComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should have the proper placeholder by default', () => {
+        expect(component.placeholder).toBe('ADF_TASK_LIST.PEOPLE.ASSIGNEE');
+    });
+
+    it('should have the selected user\'s details as placeholder if one is set', () => {
+        component.selectedUser = {
+            firstName: 'Max',
+            lastName: 'CaulField'
+        };
+        expect(component.placeholder).toBe('Max CaulField');
+    });
+
+    it('should call the PeopleProcessService\'s getWorkflowUsers method on search', () => {
+        const peopleProcessService = TestBed.get(PeopleProcessService);
+        spyOn(peopleProcessService, 'getWorkflowUsers').and.returnValue(Observable.of([]));
+
+        component.performSearch('Chloe Price');
+
+        expect(peopleProcessService.getWorkflowUsers).toHaveBeenCalledWith(undefined, 'Chloe Price');
+    });
+
+    it('should log error on getWorkflowUsers\'s error', () => {
+        const peopleProcessService = TestBed.get(PeopleProcessService);
+        const logService = TestBed.get(LogService);
+        spyOn(peopleProcessService, 'getWorkflowUsers').and.returnValue(Observable.throw(new Error()));
+        spyOn(logService, 'error');
+
+        component.performSearch('Chloe Price')
+            .subscribe((people) => {
+                expect(people).toEqual([]);
+                expect(logService.error).toHaveBeenCalledWith('getWorkflowUsers threw error');
+            });
+    });
+
+    it('should emit an event with the selected users\'s id when userSelected method is invoked', (done) => {
+
+        component.peopleIdChange.subscribe((userId) => {
+            expect(userId).toBe(789);
+            done();
+        });
+
+        component.userSelected({id: 789});
+    });
+
+    it('should emit an event with undefined when reset button is clicked', (done) => {
+        component.selectedUser = { id: 746 };
+        fixture.detectChanges();
+
+        component.peopleIdChange.subscribe((userId) => {
+            expect(userId).toBe(undefined);
+            done();
+        });
+
+        const resetButton = fixture.debugElement.query(By.css('[data-automation-id="adf-people-selector-deselect"]'));
+        resetButton.triggerEventHandler('click', {});
+    });
+});