App\Services\Form\User\UserForm::update PHP Method

    public function update(array $input)
    {
        if (!$this->valid($input)) {
            return false;
        }
        DB::transaction(function () use($input) {
            $this->user->update($input);
        });
        return true;
    }

 public function test_Should_FailToUpdateRole_When_ValidationFails()
 {
     $this->mockValidator->shouldReceive('with')->once()->andReturn($this->mockValidator);
     $this->mockValidator->shouldReceive('passes')->once()->andReturn(false);
     $form = new UserForm($this->mockValidator, $this->mockUserRepository);
     $result = $form->update([]);
     $this->assertFalse($result, 'Expected update to fail.');
 }