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I want to run some JUnit4 tests. The code relies on some Android libraries(Android XML parser), but does not create any activites and so on. When I try to run tests I got that an Android class that I need was not found. Is there any way to run JUnit4 tests with Android code, not to test activity but to test code with some libraries.
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In summary, an instrumentation test provides a special test execution environment as launched via the am instrument command, where the targeted application process is restarted and initialized with basic application context, and an instrumentation thread is started inside the application process VM.
When you use AndroidJUnitRunner to run your tests, you can access the context for the app under test by calling the static ApplicationProvider. getApplicationContext() method. If you've created a custom subclass of Application in your app, this method returns your custom subclass's context.
I had the same problem and tried to adapt JUnit4 to Android's existing TestRunner - without success. Therefore I created a new project called JUnit4Android. It's a TestRunner application library for JUnit4 and JUnit3 tests and test suites. So you can run your existing JUnit4 tests with it. Please find more information on GitHub:
https://github.com/dthommes/JUnit4Android/wiki
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There is no way (that I'm aware of) to use JUnit4 on Android. It does support JUnit3 though, if that's an option for you?
Alternatively, you could use Robolectric and run your tests on your development machine (where you'll be able to use whichever unit test framework you like). Whether this will work for you depends on exactly what you're testing, but it might be worth a go?
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