mock matcher?

[youta-t]

To test a func is invoked properly, mock is used.

Testing with mock is done by:

1. check arguments are ok
2. create (or inject) return value
3. check if the func has been called (in a exact order)

Its may be able to help users task 1.

• write a code generator which generates...
  • "argspec" (like structer's spec) from function arglist
  • mock function factory receives "argspec" and return value factory, that mock does Match() on invocation.

To do that, refactoring structer may be needed.