Running tests using any() on non equatable parameters across different versions of mockingbird produces different results if configuration != debug

[paul1893]

Overview

Running the same unit test across different versions of mockingbird on a specific configuration (!= debug) produce different results.

How to reproduce the behaviour

To quickly reproduce the behaviour I have created 5 sample project configured respectively with mockingbird 0.16, 0.17, 0.18, 0.19.1 and 0.20 that you can initiate by running install_mockingbird.sh (It will run pod install and install mockingbird).

👉 Samples.zip

I should mention two things:

1. This happens only with configuration that is different than debug. Please note that in these samples the tests are running for the dev configuration.
   
   dev is an exact duplication of debug.

2. This happens only when you try to verify a call to a function using the parameter any() on a non Equatable parameter. Like an UIImage for example: verify(presenter.display(image: any(UIImage.self))).wasCalled()

Results

Launching unit test with version 0.16 an 0.17 everything works fine:

Launching unit test with version 0.18 produces an error:

Launching unit test with version 0.19 and 0.20 produces a crash:

(NB: Using debug configuration for tests, all is green all the time across all versions.)

Understanding & questions

Obviously I guess that something changed internally in mockingbird between 0.17 and 0.18 and 0.19/0.20. At first I was thinking that non Equatable parameter was not supported anymore with any() but why is it working in debug configuration if so ? Is there some stuff in mockingbird internally that explicitly checked for configuration spelled debug even if another configuration is identical but named differently it will not work ?

It is not an issue, that's why I opened a discussion here and not an issue. It's pure developer curiosity to get back to sleep because I can't figure it out by myself :)

Environment

• Mockingbird CLI version (mockingbird 0.16 to 0.20)
• Xcode and Swift version (xcode 13.4 swift 5.6.1)
• Package manager (CocoaPods)
• Unit testing framework (XCTest)
• Custom configuration
  • Mockingbird ignore files
  • Supporting source files