Karma Error: 1 timer(s) still in the queue

Error while running the spec: Error: 1 timer(s) still in the queue. To fix this you have to modify your spec file function and add flush at the end:

Before:

  it('#foo shoudl work', fakeAsync(async () => {
    // Arrange


    // Act
    await component.foo();

    // Assert
    expect(mockedService.myMethod).toHaveBeenCalled();
    
  }));

After:

  it('#foo shoudl work', fakeAsync(async () => {
    // Arrange


    // Act
    await component.foo();

    // Assert
    expect(mockedService.myMethod).toHaveBeenCalled();

    flush();
    
  }));

Adding flush() to your method at last will fix the issue.