How to write unit test cases for private function of component in angular 9

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Inaam Husain Staff asked 10 months ago

Is there a way to write unit test cases for the private function of a component?
Here is my function, 


  private scrollToFirstInvalidControl() {
    const firstInvalidControl: HTMLElement = this.el.nativeElement.querySelector(
      "form .ng-invalid"
    );
    firstInvalidControl.focus(); //without smooth behavior
  }
 
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1 Answers
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Best Answer
Rehmaanali Staff answered 10 months ago

Yes, it is possible to write unit test cases for the private function of the component.
for your method, it will be tested as


beforeEach(() => {
  fixture = TestBed.createComponent(AuthContainerComponent);
  component = fixture.componentInstance;
  fixture.detectChanges();
});

it('should go to error field', () => {
  // arrange
  ...

  // act
  (component as any).scrollToFirstInvalidControl();

  //assert
  ....
});
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