LoginFragmentTest.kt

@Test
fun clickForgotPasswordButton_CallsViewModel() {
    onView(withId(R.id.label_forgot_password)).perform(click())
    
    verify(viewModel).onForgotPasswordLabelClicked()
    verifyNoMoreInteractions(viewModel)
}

@Test
fun clickSignInButton_CallsViewModel() {
    isLogInButtonEnabled.set(true)

    onView(withId(R.id.button_sign_in)).perform(click())

    verify(viewModel).onLoginButtonClicked()
    verifyNoMoreInteractions(viewModel)
}