test(placeholder): coverage

Author: xidedix

CHANGELOG.md

@@ -16,6 +16,7 @@
 - test(accordion): coverage
 - test(element-ref): update
 - test(backdrop): coverage
+- test(placeholder): coverage
 
 ---
 

projects/coreui-angular/src/lib/placeholder/placeholder.directive.spec.ts

@@ -1,11 +1,63 @@
-import { TestBed } from '@angular/core/testing';
+import { Component, ComponentRef, DebugElement, input } from '@angular/core';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { By } from '@angular/platform-browser';
 import { PlaceholderDirective } from './placeholder.directive';
+import { PlaceholderAnimationDirective } from './placeholder-animation.directive';
+
+@Component({
+  template: `
+    <p [cPlaceholderAnimation]="animation()">
+      <span [cPlaceholder]="visible()" cPlaceholderSize="sm"></span>
+    </p>
+  `,
+  imports: [PlaceholderDirective, PlaceholderAnimationDirective]
+})
+class TestComponent {
+  readonly visible = input(true);
+  readonly animation = input<'glow' | 'wave' | undefined>(undefined);
+}
 
 describe('PlaceholderDirective', () => {
+  let component: TestComponent;
+  let componentRef: ComponentRef<TestComponent>;
+  let fixture: ComponentFixture<TestComponent>;
+  let debugElement: DebugElement;
+  let wrapperElement: DebugElement;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [TestComponent]
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(TestComponent);
+    component = fixture.componentInstance;
+    componentRef = fixture.componentRef;
+    debugElement = fixture.debugElement.query(By.directive(PlaceholderDirective));
+    wrapperElement = fixture.debugElement.query(By.directive(PlaceholderAnimationDirective));
+  });
+
   it('should create an instance', () => {
     TestBed.runInInjectionContext(() => {
       const directive = new PlaceholderDirective();
       expect(directive).toBeTruthy();
     });
   });
+
+  it('should toggle visibility for the placeholder', () => {
+    componentRef.setInput('visible', true);
+    fixture.detectChanges();
+    expect(debugElement.nativeElement).toHaveClass('placeholder');
+    expect(debugElement.nativeElement).toHaveClass('placeholder-sm');
+    componentRef.setInput('visible', false);
+    fixture.detectChanges();
+    expect(debugElement.nativeElement.getAttribute('aria-hidden')).toBe('true');
+    expect(debugElement.nativeElement).not.toHaveClass('placeholder');
+  });
+
+  it('should toggle animation for the placeholder', () => {
+    expect(wrapperElement.nativeElement).not.toHaveClass('placeholder-glow');
+    componentRef.setInput('animation', 'glow');
+    fixture.detectChanges();
+    expect(wrapperElement.nativeElement).toHaveClass('placeholder-glow');
+  });
 });