test(core): add autofocus directive test

npm/ng-packs/packages/core/src/lib/tests/autofocus.directive.spec.ts

@@ -0,0 +1,36 @@
+import { createDirectiveFactory, SpectatorDirective } from '@ngneat/spectator/jest';
+import { AutofocusDirective } from '../directives/autofocus.directive';
+import { timer } from 'rxjs';
+
+describe('AutofocusDirective', () => {
+  let spectator: SpectatorDirective<AutofocusDirective>;
+  let directive: AutofocusDirective;
+  let input: HTMLInputElement;
+  const createDirective = createDirectiveFactory({
+    directive: AutofocusDirective,
+  });
+
+  beforeEach(() => {
+    spectator = createDirective('<input [autofocus]="10" />', {
+      hostProps: {},
+    });
+    directive = spectator.directive;
+    input = spectator.query('input');
+  });
+
+  test('should be created', () => {
+    expect(directive).toBeTruthy();
+  });
+
+  test('should have 10ms delay', () => {
+    expect(directive.delay).toBe(10);
+  });
+
+  test('should focus element after given delay', done => {
+    timer(0).subscribe(() => expect('input').not.toBeFocused());
+    timer(11).subscribe(() => {
+      expect('input').toBeFocused();
+      done();
+    });
+  });
+});