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kotlinlang

I’m trying to run some tests on a MPP library (Android &amp; iOS targets) and I have some questions.
1. Why do I need to have JUnit/JUnit5/TestNG on the Android part just to get the `@Test` annotation?
2. Can you have top-level tests instead of having to put them in a class?
~3. Is there a good sample on how to have tests running for iOS, especially in the case of needing some CInterops?~

On the iOS part, I’m currently stuck at getting the ObjC lib used by a dependency found inside the simulator. (So yeah I’m already at the part where it attempts to run something inside the simulator)

```
&gt; Task :iosTest FAILED
dyld: Library not loaded: @rpath/Bugsnag.framework/Bugsnag
  Referenced from: &lt;project&gt;/build/bin/iosSim/testDebugExecutable/test.kexe
  Reason: image not found
Child process terminated with signal 6: Abort trap

FAILURE: Build failed with an exception.
```

```
ribesg:testDebugExecutable/ (develop✗) $ otool -L test.kexe                                                                          [12:26:27]
test.kexe:
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.250.1)
	/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 400.9.4)
	/usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
	/System/Library/Frameworks/Foundation.framework/Foundation (compatibility version 300.0.0, current version 1570.15.0)
	/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)
	@rpath/Bugsnag.framework/Bugsnag (compatibility version 1.0.0, current version 1.0.0)
	/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation (compatibility version 150.0.0, current version 1570.15.0)
	/usr/lib/libc++abi.dylib (compatibility version 1.0.0, current version 400.17.0)

```

&gt; dyld: Library not loaded: @rpath/Bugsnag.framework/Bugsnag

It is likely missing at location where `test.kexe` expects to find it, i.e. `&lt;project&gt;/build/bin/iosSim/testDebugExecutable/Frameworks/Bugsnag.framework/Bugsnag`

Oh, so I need to copy it? Is it possible to replace this `@rpath`? Wait it may not be a good idea to travel outside of `testDebugExecutable`

You can copy both framework and executable to other location.

Yeah I need both of them in the same place, but I guess than copying the framework from the Carthage build directory to the `testDebugExecutable` directory makes more sense than the other way around

1. The `kotlin.test.Test` annotation on the JVM is just a typealias, so you need to include junit or testng to provide the actual implementation.

Yes, but why do we need that? We can’t use the rest of JUnit/TestNG in our tests anyway!

I think it's because you still need to select what implementation to use under the hood. And you might interop with existing test code you have written in one of those frameworks. A lot of multiplatform is not building new implementations from scratch, but rather wrapping existing things in a common API.

Sure, but there is an implementation for native and js, right? There should be something like `kotlin-test-jvm` providing the same implementations than for js and native. I understand that it can’t be in common because you can’t override actuals but I don’t understand that it doesn’t exist at all.