Hello. I am a TDD beginner (just 150-200 tests done), I am passing some tests, but I am surprised, because I am saying that a method should be called (syncGroups), or I don't have the Services (no services class,no folder...), but I don't have that call in the controller yet (tdd), i pass it and I get green any way.

	public function testSavePass()
	{
		$userService = $this->mock('Nireapp\Services\Interfaces\UserServiceInterface');

		$input = [
		'email'=>'emaila@email.com',
		'alias'=>'proba',
		'role_id'=>1,
		'town_id'=>1,
		'zone_id'=>1,
		'county_id'=>1,
		'auth_id'=>1,
		];
		$group_array = array(1,2);

		$user = Factory::create('Nireapp\Models\User',$input);
		$input['group_id'] = '1,2';
		$vMock = $this->mock('Nireapp\Validators\UserValidator');

		$this->mock->shouldReceive('getUserValidator')->once()->andReturn($vMock);
		Input::replace($input);
		$vMock->shouldReceive('isValid')->once()->andReturn(true);
		
		$this->mock->shouldReceive('create')->once()->with($input)->andReturn($user);
		
		$userService->shouldReceive('inputStringToArray')
		->with($input['group_id'])->andReturn($group_array);
		$this->mock->shouldReceive('syncGroups')->with($user,$group_array);
		
		$emaitza = $this->call('POST','users',$input);
		$this->assertRedirectedToRoute('users.index');

	}

and for example if I change the redirection (user.index), it fails. So phpunit works, I am doing something wrong. What? Can anyone help me please?