public async Task ReturnCorrectViewModel_WhenCalled()
{
// Arrange
Mock <ISpellService> spellServiceMock = new Mock <ISpellService>();
Mock <IPDFService> pDFServiceMock = new Mock <IPDFService>();
IMemoryCache memoryCacheMock = new MemoryCache(new MemoryCacheOptions());
string validSortOrder = string.Empty;
string validFilter = string.Empty;
int validPageNumber = 1;
int validPageSize = 10;
IPagedList <Spell> spells = new PagedList <Spell>(new List <Spell>().AsQueryable(), validPageNumber, validPageSize);
spellServiceMock.Setup(mock => mock.FilterSpellsAsync(validSortOrder, validFilter, validPageNumber, validPageSize))
.Returns(Task.FromResult(spells));
SpellController SUT = new SpellController(
spellServiceMock.Object,
pDFServiceMock.Object,
memoryCacheMock);
// Act
var result = await SUT.Index() as ViewResult;
// Assert
Assert.IsInstanceOfType(result.Model, typeof(SpellIndexViewModel));
}