Provide option to skip generating mocks for parent protocols outside package

[juyan]

Overview

It looks like the generated mock file will contain mocks for inherited protocols by design. Can we improve the generator to exclude them? Or is there a way to do this that I'm unaware of.

Example

Swift Package "Base":

public protocol BaseProtocol {
    func getBar() -> Int
}

Swift Package "Middle":

public protocol MiddleProtocol: BaseProtocol {
    func getFoo() -> Int
}

Now run the generator using the following command:

cuckoo_generator generate --glob Base/Sources/Base/* --glob Middle/Sources/Middle/* --output Middle/Tests/MiddleTests/MiddleTestMocks.swift --testable Middle

We would get both MockMiddleProtocol and MockBaseProtocol inside the file MiddleTestMocks.swift.

Expected Behavior

Using the above example, I'm looking for a way to not contain MockBaseProtocol inside BaseMiddleMocks. This can probably be configurable via a new command line argument like supportGlob. It indicates the file necessary to generate the correct mocks that contains parent methods but does not generate mock for parent protocols themselves.

cuckoo_generator generate --glob Middle/Sources/Middle/* --supportGlob Base/Sources/Base/* --output Middle/Tests/MiddleTests/MiddleTestMocks.swift --testable Middle

Looking forward to see other's thoughts. Thanks.

[MatyasKriz]

Hey there, @juyan. Does excluding the MiddleProtocol on its own do what you need? I'm not against adding support for this case, but I'd refrain from adding more CLI flags if possible.

[juyan]

@MatyasKriz sorry there was something wrong in my example and I fixed it. Please take a look again, hope it makes more sense now.

[MatyasKriz]

Hey, in Cuckoo 2.0 the regex exclusion is applied after inheritance is resolved, so it is possible to do the thing you're proposing here. 🙂 Thanks for the issue!