Feature: customizable fields display for documents, saved views & dashboard widgets (#6439)

src-ui/src/app/components/common/input/drag-drop-select/drag-drop-select.component.spec.ts

@@ -0,0 +1,102 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing'
+import { DragDropModule } from '@angular/cdk/drag-drop'
+import { FormsModule, NG_VALUE_ACCESSOR } from '@angular/forms'
+import { DragDropSelectComponent } from './drag-drop-select.component'
+
+describe('DragDropSelectComponent', () => {
+  let component: DragDropSelectComponent
+  let fixture: ComponentFixture<DragDropSelectComponent>
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [DragDropModule, FormsModule],
+      declarations: [DragDropSelectComponent],
+    }).compileComponents()
+
+    fixture = TestBed.createComponent(DragDropSelectComponent)
+    component = fixture.componentInstance
+    fixture.debugElement.injector.get(NG_VALUE_ACCESSOR)
+    fixture.detectChanges()
+  })
+
+  it('should update selectedItems when writeValue is called', () => {
+    const newValue = ['1', '2', '3']
+    component.items = [
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+    ]
+    component.writeValue(newValue)
+    expect(component.selectedItems).toEqual([
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+    ])
+
+    component.writeValue(null)
+    expect(component.selectedItems).toEqual([])
+  })
+
+  it('should update selectedItems when an item is dropped within selectedList', () => {
+    component.items = [
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+      { id: '4', name: 'Item 4' },
+    ]
+    component.writeValue(['1', '2', '3'])
+    const event = {
+      previousContainer: component.selectedList,
+      container: component.selectedList,
+      previousIndex: 1,
+      currentIndex: 2,
+    }
+    component.drop(event as any)
+    expect(component.selectedItems).toEqual([
+      { id: '1', name: 'Item 1' },
+      { id: '3', name: 'Item 3' },
+      { id: '2', name: 'Item 2' },
+    ])
+  })
+
+  it('should update selectedItems when an item is dropped from unselectedList to selectedList', () => {
+    component.items = [
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+    ]
+    component.writeValue(['1', '2'])
+    const event = {
+      previousContainer: component.unselectedList,
+      container: component.selectedList,
+      previousIndex: 0,
+      currentIndex: 2,
+    }
+    component.drop(event as any)
+    expect(component.selectedItems).toEqual([
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+    ])
+  })
+
+  it('should update selectedItems when an item is dropped from selectedList to unselectedList', () => {
+    component.items = [
+      { id: '1', name: 'Item 1' },
+      { id: '2', name: 'Item 2' },
+      { id: '3', name: 'Item 3' },
+    ]
+    component.writeValue(['1', '2', '3'])
+    const event = {
+      previousContainer: component.selectedList,
+      container: component.unselectedList,
+      previousIndex: 1,
+      currentIndex: 0,
+    }
+    component.drop(event as any)
+    expect(component.selectedItems).toEqual([
+      { id: '1', name: 'Item 1' },
+      { id: '3', name: 'Item 3' },
+    ])
+  })
+})