Statements about testing, paraphrased from Yehuda Katz

• If a patch for a bug fix is longer than the code it replaces, a detailed explanation must be supplied.
• Patches for bug fixes should more or less delete as many lines as it adds.  Failure to do so will require a detailed explanation.
• Mocks are only allowed for APIs that are well defined, and external to your code.  And tests should run w/ mocks turned off and real world objects in their place.  (i.e. Mocks should accurately represent real world objects)
• Mocks are not to be used for API regression testing.  Tests must use real world objects.