[ADF-3630] fix i18n fallback behaviour (#3851)

* fix i18n fallback behaviour

* update tests

* update tests

* configuration fixes

* test configuration fix

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

@@ -16,7 +16,7 @@
  */
 
 import { Component, SimpleChange, ViewChild, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
-import { ComponentFixture, TestBed, async } from '@angular/core/testing';
+import { ComponentFixture, TestBed, fakeAsync, tick } from '@angular/core/testing';
 import { By } from '@angular/platform-browser';
 import { AppConfigService, setupTestBed, CoreModule } from '@alfresco/adf-core';
 import { DataRowEvent, ObjectDataRow } from '@alfresco/adf-core';
@@ -24,6 +24,8 @@ import { TaskListService } from '../services/tasklist.service';
 import { TaskListComponent } from './task-list.component';
 import { ProcessTestingModule } from '../../testing/process.testing.module';
 import { fakeGlobalTask, fakeCutomSchema } from '../../mock';
+import { TranslateService } from '@ngx-translate/core';
+import { of } from 'rxjs';
 
 declare let jasmine: any;
 
@@ -74,6 +76,7 @@ describe('TaskListComponent', () => {
 
     afterEach(() => {
         jasmine.Ajax.uninstall();
+        fixture.destroy();
     });
 
     it('should use the default schemaColumn as default', () => {
@@ -543,6 +546,10 @@ describe('CustomTaskListComponent', () => {
         component = fixture.componentInstance;
     });
 
+    afterEach(() => {
+        fixture.destroy();
+    });
+
     it('should create instance of CustomTaskListComponent', () => {
         expect(component instanceof CustomTaskListComponent).toBe(true, 'should create CustomTaskListComponent');
     });
@@ -568,8 +575,9 @@ describe('CustomTaskListComponent', () => {
 class EmptyTemplateComponent {
 }
 
-describe('Custom EmptyTemplateComponent', () => {
+describe('Task List: Custom EmptyTemplateComponent', () => {
     let fixture: ComponentFixture<EmptyTemplateComponent>;
+    let translateService: TranslateService;
 
     setupTestBed({
         imports: [ProcessTestingModule],
@@ -578,15 +586,23 @@ describe('Custom EmptyTemplateComponent', () => {
     });
 
     beforeEach(() => {
+        translateService = TestBed.get(TranslateService);
+        spyOn(translateService, 'get').and.callFake((key) => {
+            return of(key);
+        });
+
         fixture = TestBed.createComponent(EmptyTemplateComponent);
         fixture.detectChanges();
     });
 
-    it('should render the custom template', async(() => {
-        fixture.whenStable().then(() => {
-            fixture.detectChanges();
-            expect(fixture.debugElement.query(By.css('#custom-id'))).not.toBeNull();
-            expect(fixture.debugElement.query(By.css('.adf-empty-content'))).toBeNull();
-        });
+    afterEach(() => {
+        fixture.destroy();
+    });
+
+    it('should render the custom template', fakeAsync(() => {
+        fixture.detectChanges();
+        tick(100);
+        expect(fixture.debugElement.query(By.css('#custom-id'))).not.toBeNull();
+        expect(fixture.debugElement.query(By.css('.adf-empty-content'))).toBeNull();
     }));
 });

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

@@ -31,12 +31,16 @@ describe('TaskStandaloneComponent', () => {
         ]
     });
 
-    beforeEach(async(() => {
+    beforeEach(() => {
         fixture = TestBed.createComponent(TaskStandaloneComponent);
         component = fixture.componentInstance;
         element = fixture.nativeElement;
         fixture.detectChanges();
-    }));
+    });
+
+    afterEach(() => {
+        fixture.destroy();
+    });
 
     it('should show Completed message if isCompleted is true', async(() => {
         component.isCompleted = true;