erikhellman / androidkatas

Robolectric Katas

Use this repository a starting point to complete Android code katas.

Import

The master branch has Robolectric preintegrated. Simply import into Android Studio using the "Import Non-Android Studio project" option and selecting the top-level build.gradle file.

Note: To become comfortable with integrating Robolectric, you can use the "Hello, Robolectric" chapter of the Android Activity Book or my Pocket Guide to TDD with Robolectric (coming soon!) as a separate kata.

Run the Tests

Now that the project is imported, ensure the tests run.

Create a run configuration to run the tests from the IDE (my preferred method). To run the tests from the command line, use ./gradlew check.

When running for the first time, I often get this error -- and sometimes well after the project has begun.

Error:(25,0) Gradle: A problem occured evaluating projecy ':robolectric_tests'.
             > Could not find property 'android' on project ':app'.

If you invalidate your caches and restart ("File" -> "Invalidate Caches / Restart ..."), it clears up the problem. Sometimes opening and closing Android Studio is required.

Katas

Now that the project is configured, you're ready to work though some katas.

Join my newsletter for updates about my upcoming book with Android katas. In the meantime, check out these resources to help you on your test driven development (TDD) journey.