Identity Asserts
Assert.AreSame and Assert.AreNotSame test whether the same objects are referenced by the two arguments.
Assert.AreSame( object expected, object actual );
Assert.AreSame( object expected, object actual, string message );
Assert.AreSame( object expected, object actual, string message,
params object[] parms );
Assert.AreNotSame( object expected, object actual );
Assert.AreNotSame( object expected, object actual, string message );
Assert.AreNotSame( object expected, object actual, string message,
params object[] parms );
Assert.Contains is used to test whether an object is contained in an array or list.
Assert.Contains( object anObject, IList collection );
Assert.Contains( object anObject, IList collection,
string message );
Assert.Contains( object anObject, IList collection,
string message, params object[] parms );
