JustMock lets you mock anything with ease. It provides support for mocking of:
Interfaces
Virtual and abstract methods and properties
LINQ queries
Sealed classes
Static classes, methods and properties
Non-virtual methods and properties
Non-public members and types
Delegates
Generics
DLL imports
Threadpool
Extension methods
Ref return values and ref locals
Local functions
Named parameters
MsCorLib members
WCF
Web services
Microsoft Entity Framework
Database connections and queries
Microsoft SharePoint Mocking
Mocking MsCorLib Members
Mocking .NET System members (a.k.a. MsCorLib) can be a daunting task. But with JustMock you can arrange against any MsCorLib member or function including DateTime.Now without any additional set-up.