'Module was not compiled for testing' when using @testable
In your main target you need to set the Enable Testability build option to Yes.
As per the comment by @earnshavian below, this should only be used on debug builds as per apple release notes: "The Enable Testability build setting should be used only in your Debug configuration, because it prohibits optimizations that depend on not exporting internal symbols from the app or framework" https://developer.apple.com/library/content/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html#//apple_ref/doc/uid/TP40001051-CH1-SW326
In my case I used a custom build configuration for testing (called Test) and also cocoapods as a dependency manager
I had to add the following lines to the end of my Podfile to enable testability
post_install do |installer| installer.pods_project.targets.each do |target| target.build_configurations.each do |config| if config.name == 'Test' config.build_settings['ENABLE_TESTABILITY'] = 'YES' end end endendBy default cocoapods sets ENABLE_TESTABILITY to YES only for Debug builds
Make sure that you properly set your checkboxes under your app scheme. You SHOULD UNCHECK your test targets for Archive Build.
