More Expectation Annotations
Let's learn about stub methods, testing with mock objects, and mock object arguments.
RSpec allows several different annotations to the expectation part of declaring a test double. We can specify more complex return values or a variety of arguments to the stubbed method.
Stubbing return values
A couple of advanced usages of returns may be valuable now and again. If we have multiple return values specified, the stubbed method returns one at a time (spec added on line 21):
Bud1 � l sdsclbool m o d e l sdsclbool @ � @ � @ � @ E � DSDB ` � @ � @ � @
The return values of the stubbed method walk through the values passed to and_return. Note that the values don’t cycle. The last value is repeated over and over again.
Stubbed method
RSpec can do a couple of other useful things with return values. If the method being stubbed takes a block and we want to cause the stubbed method to yield a particular set of arguments to the block, we can do so with and_yield:
`allow(project).to