如何从Swift单元测试中访问测试目标中存在的Objective-C代码？

Question

I'm trying to unit test some Swift classes I've written. They require access to Objective-C classes which only exist in my test target .

I can access the Objective-C classes belonging to my app target by specifying the app's bridging header in the test targets "Objective-C Bridging Header" build setting. However, I can't then use that to expose Objective-C classes in my test target.

How do I access the Objective-C classes that only exist in my test target, from a Swift test class?

Answer 1

I added a second bridging header file, this one belongs within my test target. Within this second header, I import the one from my app, along with the Objective-C code I need inside my tests.

Call it "MyAppTests-BridgingHeader.h":

#import "MyApp-Bridging-Header.h"
#import "MagicalRecord.h"
#import "MagicalRecord+Setup.h"

I then set this as the bridging header in the test target build settings:

My tests now have access to all the Objective-C classes exposed to Swift in my main bridging header, as well as all extra Objective-C classes exposed only within the tests.