When running instrumentation tests in Android Studio, developers might notice that the app gets uninstalled immediately after tests complete. This behavior is controlled by the uninstallAfterTest configuration. Adjusting this setting is crucial if you prefer the app to remain installed after testing. Here’s how to modify this setting effectively.
Why Change the uninstallAfterTest Setting?
By default, Android Studio removes your app after instrumentation tests (uninstallAfterTest=true). Keeping the app installed (uninstallAfterTest=false) allows you to:
- Quickly perform further manual testing without reinstalling.
- Debug and inspect app state post-tests.
Step-by-Step Guide to Changing uninstallAfterTest
Step 1: Locate the Test Configuration
- In Android Studio, click Run → Edit Configurations.
- Find and select your test configuration under “Android Instrumented Tests.”
Step 2: Modify the uninstallAfterTest Option
- In the configuration dialog, look for the “Installation Options” section.
- Uncheck the option labeled “Uninstall APK after test success” to set
uninstallAfterTestto false.
Alternatively, if you’re manually editing configurations in runConfigurations, modify your XML configuration:
<option name="UNINSTALL_AFTER_SUCCESSFUL_TEST" value="false" />
Step 3: Save Changes and Rerun Tests
- Click Apply and then OK to save your configuration.
- Rerun your instrumentation tests; the app will now remain installed after testing.
Practical Tips
- Always verify your settings before running extensive tests.
- Use this configuration effectively when debugging intricate test scenarios.
Common Mistakes to Avoid
- Forgetting to reset this configuration when necessary, causing unintended app persistence on devices or emulators.
Recommended Documentation
Conclusion
Adjusting the uninstallAfterTest setting helps streamline your testing and debugging processes. Following these steps ensures you have control over the lifecycle of your apps during development and testing.
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