public void WithEmptyFallback_Invoke_Success() { OneToOneMap <string> propertyMapping = Map(t => t.Value); Assert.Same(propertyMapping, propertyMapping.WithEmptyFallback("abc")); FixedValueFallback fallback = Assert.IsType <FixedValueFallback>(propertyMapping.Pipeline.EmptyFallback); Assert.Equal("abc", fallback.Value); }