![]() ![]() This is the default location for unit tests. Note that this is enabled by default in Android studio version 2+.Ĭreating a new project doesn't automatically create a directory for our unit tests so let's manually add the src/test/java directory to the project. Without this, our unit tests won't be included in the build. Next, open the Build Variants window and set the Test Artifact to Unit Tests. ![]() The default setting (the Android perspective) hides certain directories (including the unit tests!): !() This will show us a full view of everything contained in the project. This gives us the ability to execute our tests on the JVM and achieve much faster test execution times than if we were running on a device or emulator. Robolectric provides implementations of the Android SDK by rewriting the Android core libraries using shadow classes. So for all of us that want faster executing tests on the JVM, Robolectric saves the day. The actual implementations of the core libraries are built directly on the device or emulator, so running tests usually requires one to be active in order to execute. Running Android tests on the JVM usually fails because the Android core libraries included with the SDK, specifically the android.jar file, only contain stub implementations of the Android classes. ![]() It allows Android applications to be tested on the JVM without an emulator or device. ![]()
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