[ADF-2494] Task Standalone - Provide a way to attach a form (#3459)

* button added for task standalone

* attach form component added

* slide-toggle position fixed

* tests added

* rebase fixed

* review fix

* test added & fixes

* tests fixes

* refresh task details

* tests fixed

* attachFormToATask test added

* formPreview test fixed

* adf-form test fixed

lib/process-services/task-list/components/attach-form.component.spec.ts

@@ -0,0 +1,78 @@
+/*!
+ * @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 { AttachFormComponent } from './attach-form.component';
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { setupTestBed } from '@alfresco/adf-core';
+import { ProcessTestingModule } from '../../testing/process.testing.module';
+import { TaskListService } from './../services/tasklist.service';
+import { Observable } from 'rxjs/Observable';
+
+describe('AttachFormComponent', () => {
+    let component: AttachFormComponent;
+    let fixture: ComponentFixture<AttachFormComponent>;
+    let element: HTMLElement;
+    let taskService: TaskListService;
+
+    setupTestBed({
+        imports: [
+            ProcessTestingModule
+        ]
+    });
+
+    beforeEach(async(() => {
+        fixture = TestBed.createComponent(AttachFormComponent);
+        component = fixture.componentInstance;
+        element = fixture.nativeElement;
+        taskService = TestBed.get(TaskListService);
+        fixture.detectChanges();
+    }));
+
+    it('should emit cancel event if clicked on Cancel Button ', async(() => {
+        fixture.detectChanges();
+        fixture.whenStable().then(() => {
+            const emitSpy = spyOn(component.cancelAttachForm, 'emit');
+            const el = fixture.nativeElement.querySelector('#adf-no-form-cancel-button');
+            el.click();
+            expect(emitSpy).toHaveBeenCalled();
+        });
+    }));
+
+    it('should call attachFormToATask if clicked on Complete Button', async(() => {
+        component.taskId = 1;
+        component.formKey = 2;
+        spyOn(taskService, 'attachFormToATask').and.returnValue(Observable.of(true));
+        fixture.detectChanges();
+        fixture.whenStable().then(() => {
+            expect(element.querySelector('#adf-no-form-attach-form-button')).toBeDefined();
+            const el = fixture.nativeElement.querySelector('#adf-no-form-attach-form-button');
+            el.click();
+            expect(taskService.attachFormToATask).toHaveBeenCalledWith(1, 2);
+        });
+    }));
+
+    it('should show the adf-form of the selected form', async(() => {
+        component.taskId = 1;
+        component.formKey = 12;
+        fixture.detectChanges();
+        const formContainer = fixture.debugElement.nativeElement.querySelector('adf-form');
+        fixture.whenStable().then(() => {
+            expect(formContainer).toBeDefined();
+            expect(formContainer).not.toBeNull();
+        });
+    }));
+});