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More about adding a collaboratorEncountering Unknown Methods
As a test author
I want my test double to yell at me when I try invoking a method that instances of the class being doubled wouldn't respond to
so that I don't find myself with a green bar and a dependency that can't do what the test thinks it does.
However, I also want to be able to stub and verify methods that aren't apparently on the class
so that I can test behavior that I'm confident will be added to the test double's real counterpart dynamically at runtime
- Scenarios
-
- on a classy double, stubbing an unknown method
- on a classy double, verifying an unknown method
- on a classy double, stubbing a method with "give!"
- on a classy double, verifying a method with "verify!"
- on a generic double, stubbing an unknown method
- on a generic double, verifying an unknown method
- on a classy double, stubbing an unknown method
-
- Given
- a new Dog test double
- When
- I stub meow to return "Woof"
- Then
- a NoMethodError is raised
- on a classy double, verifying an unknown method
-
- Given
- a new Dog test double
- When
- I invoke gobbeldy_gook
- Then
- verifying gobbeldy_gook raises a NoMethodError
- on a classy double, stubbing a method with "give!"
-
- Given
- a new Dog test double
- When
- I stub! meow to return :woof
- Then
- invoking meow returns :woof
- on a classy double, verifying a method with "verify!"
-
- Given
- a new Dog test double
- When
- I invoke meow
- Then
- I can verify! meow has been invoked 1 time
- on a generic double, stubbing an unknown method
-
- Given
- a new test double
- When
- I stub meow to return "Woof"
- Then
- no error is raised
- on a generic double, verifying an unknown method
-
- Given
- a new test double
- When
- I invoke gobbeldy_gook
- Then
- I can verify gobbeldy_gook has been invoked 1 time
Last published over 7 years ago by searls.