Using Mocks to Verify Interactions
http://www.stickyminds.com/definerequirements.asp?Function=FEATUREDETAIL&ObjectId=10466&ObjectType=COL

North, Dan
StickyMinds
2006

Abstract:

Continues a conversation with closer look at 'mocks,' utility classes that, for testing purposes, pretend to be some component or service with which your object will interact.