public void Search_InvalidModel_ReturnsModel()
{
//Arrange
var model = _fixture.Create <PropertySearchViewModel>();
var controller = new PropertyController(_propertyRepository.Object);
//Set model to be invalid
controller.ModelState.AddModelError("test", "test");
//Act
var result = controller.Search(model);
//Assert
var viewResult = result as ViewResult;
Assert.IsNotNull(viewResult);
var viewModel = viewResult.Model as PropertySearchViewModel;
Assert.IsNotNull(viewModel);
Assert.AreSame(model, viewModel);
//Never call repository
_propertyRepository.Verify(x => x.GetProperties(It.IsAny <Requirements>()), Times.Never);
}