public async Task GetCategoriesReturnsEmptyListWhenCategoriesNotFoundTest()
{
var store = Substitute.For <ICategoryStore>();
var cache = Substitute.For <ICategoryCache>();
var sut = new CategoryQuery(store, cache);
using (var tokenSource = new CancellationTokenSource())
{
cache.GetCategories().Returns((ICollection <Category>)null);
store.GetAllCategories(tokenSource.Token).Returns((IEnumerable <Category>)null);
var actual = await sut.GetCategories(ReadType.All, tokenSource.Token).ConfigureAwait(false);
actual.Should().BeEmpty();
}
}
public async Task GetCategoriesReturnsCachedCategoriesTest()
{
var expected = Model.Create <List <Category> >();
var store = Substitute.For <ICategoryStore>();
var cache = Substitute.For <ICategoryCache>();
cache.GetCategories().Returns(expected);
var sut = new CategoryQuery(store, cache);
using (var tokenSource = new CancellationTokenSource())
{
var actual = await sut.GetCategories(ReadType.All, tokenSource.Token).ConfigureAwait(false);
actual.Should().BeEquivalentTo(expected);
}
}
public async Task GetCategoriesReturnsVisibleCategoriesFromCacheWhenVisibleOnlyRequestedTest()
{
var categories = Model.Create <List <Category> >();
var expected = categories.Where(x => x.Visible).ToList();
var store = Substitute.For <ICategoryStore>();
var cache = Substitute.For <ICategoryCache>();
cache.GetCategories().Returns(expected);
var sut = new CategoryQuery(store, cache);
using (var tokenSource = new CancellationTokenSource())
{
var actual = await sut.GetCategories(ReadType.VisibleOnly, tokenSource.Token).ConfigureAwait(false);
actual.Should().BeEquivalentTo(expected);
}
}
public async Task GetCategoriesCachesCategoryReturnedFromStoreTest()
{
var expected = Model.Create <List <Category> >();
var store = Substitute.For <ICategoryStore>();
var cache = Substitute.For <ICategoryCache>();
var sut = new CategoryQuery(store, cache);
using (var tokenSource = new CancellationTokenSource())
{
cache.GetCategories().Returns((ICollection <Category>)null);
store.GetAllCategories(tokenSource.Token).Returns(expected);
await sut.GetCategories(ReadType.All, tokenSource.Token).ConfigureAwait(false);
cache.Received().StoreCategories(
Verify.That <ICollection <Category> >(x => x.Should().BeEquivalentTo(expected)));
}
}
