private static void WhenOverridden_ShouldReturnOverriddenImplementationType(Type interfaceType,
Type overriddenImplementationType, Action <OverridableServicesContainer> getServiceToOverride)
{
var configuration = new DIConfiguration();
var mappedTypes = configuration
.SetImplementationType(getServiceToOverride)
.Build();
Assert.IsTrue(mappedTypes.ContainsKey(interfaceType));
Assert.AreEqual(overriddenImplementationType, mappedTypes[interfaceType]);
}