public void DependencyMap_GetSecondaryDependencyHolder_Test()
{
//arrange
Type type = typeof(foo);
Mock <IDependencyHolder> mockDepHolder = new Mock <IDependencyHolder>();
mockDepHolder.SetupGet(dh => dh.DependencyId).Returns(type.GetDependencyId());
Mock <IDIContainer> mockContainer = new Mock <IDIContainer>();
IDependencyMap dependencyMap = new DependencyMap(mockContainer.Object, type);
dependencyMap.SecondaryDependencyHolders.Add(mockDepHolder.Object);
//act
IDependencyHolder actualDepHolder = dependencyMap.GetSecondaryDependencyHolder(type.GetDependencyId());
//assert
Assert.IsNotNull(actualDepHolder);
}