public void GetLayoutValue_WhenCacheReturnsNullAndInnerProviderReturnsNull_DoesNotAddToCacheAndReturnsNull()
{
// Arrange
var innerProvider = Substitute.For<IBaseLayoutValueProvider>();
innerProvider.GetBaseLayoutValue(Arg.Any<Item>()).Returns((string) null);
var cache = Substitute.For<IBaseLayoutValueCache>();
cache.GetLayoutValue(Arg.Any<Item>()).Returns((string) null);
var provider = new CachedBaseLayoutValueProvider(innerProvider, cache);
var item = MasterFakesFactory.CreateFakeItem();
// Act
var result = provider.GetBaseLayoutValue(item);
// Assert
Assert.Null(result);
cache.DidNotReceive().AddLayoutValue(Arg.Any<Item>(), Arg.Any<string>());
}
public void GetLayoutValue_WhenCacheReturnsVaue_ReturnsThatValueAndeDoesNotCallInnerProvider()
{
// Arrange
var layoutValue = "this is my layout value";
var innerProvider = Substitute.For<IBaseLayoutValueProvider>();
var cache = Substitute.For<IBaseLayoutValueCache>();
cache.GetLayoutValue(Arg.Any<Item>()).Returns(layoutValue);
var provider = new CachedBaseLayoutValueProvider(innerProvider, cache);
var item = MasterFakesFactory.CreateFakeItem();
// Act
var result = provider.GetBaseLayoutValue(item);
// Assert
Assert.Equal(layoutValue, result);
innerProvider.DidNotReceive().GetBaseLayoutValue(Arg.Any<Item>());
}
public void GetLayoutValue_WhenCacheReturnsNullAndInnerProviderReturnsValue_AddsResultToCacheAndReturnsIt()
{
// Arrange
var layoutValue = "this is my layout value";
var innerProvider = Substitute.For<IBaseLayoutValueProvider>();
innerProvider.GetBaseLayoutValue(Arg.Any<Item>()).Returns(layoutValue);
var cache = Substitute.For<IBaseLayoutValueCache>();
cache.GetLayoutValue(Arg.Any<Item>()).Returns((string) null);
var provider = new CachedBaseLayoutValueProvider(innerProvider, cache);
var item = MasterFakesFactory.CreateFakeItem();
// Act
var result = provider.GetBaseLayoutValue(item);
// Assert
Assert.Equal(layoutValue, result);
cache.Received().AddLayoutValue(item, layoutValue);
}