test(core): add missing form-submit directive test

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

@@ -0,0 +1,46 @@
+import { createDirectiveFactory, SpectatorDirective } from '@ngneat/spectator/jest';
+import { FormSubmitDirective } from '../directives/form-submit.directive';
+import { FormsModule, ReactiveFormsModule, FormGroup } from '@angular/forms';
+import { timer } from 'rxjs';
+
+describe('FormSubmitDirective', () => {
+  let spectator: SpectatorDirective<FormSubmitDirective>;
+  let directive: FormSubmitDirective;
+
+  let formGroup = new FormGroup({});
+  const submitEventFn = jest.fn(() => {});
+
+  const createDirective = createDirectiveFactory({
+    directive: FormSubmitDirective,
+    imports: [FormsModule, ReactiveFormsModule],
+  });
+
+  beforeEach(() => {
+    spectator = createDirective(
+      '<form [formGroup]="formGroup" (ngSubmit)="submitEventFn()" [debounce]="20">form content</form>',
+      {
+        hostProps: {
+          submitEventFn,
+          formGroup,
+        },
+      },
+    );
+    directive = spectator.directive;
+  });
+
+  test('should be created', () => {
+    expect(directive).toBeTruthy();
+  });
+
+  test('should have 20ms debounce time', () => {
+    expect(directive.debounce).toBe(20);
+  });
+
+  test('should dispatch submit event on keyup event triggered after given debounce time', done => {
+    spectator.dispatchKeyboardEvent('form', 'keyup', 'Enter');
+    timer(directive.debounce + 1).subscribe(() => {
+      expect(submitEventFn).toHaveBeenCalled();
+      done();
+    });
+  });
+});