由于 org.junit.Test class 在外部库中的依赖性，无法使用 LeakCanary

Question

I'm trying to use LeakCanary for finding memory leaks in my Android application. I'm using Android Studio.

When I start debugging my application I see "LeakCanary is currently disabled: test class org.junit.Test was found in classpath." message.

"org.junit.test" class came from external library.

How can I force enable LeakCanary?

Answer 1

LeakCanary automatically disables itself in tests by detecting that the org.junit.Test is in the classpath. Unfortunately, some apps ship Junit in their app debug classpath (eg when using OkHttp MockWebServer). You can customize which class is used to detect tests:

<resources>
  <string name="leak_canary_test_class_name">assertk.Assert</string>
</resources>

The doc needs to be updated (tracked here: https://github.com/square/leakcanary/issues/1968 )

Answer 2

Sometimes it helps to check your module build.gradle file and find "implementation" instead of "testImplementation" or "androidTestImplementation" for test dependencies. It may cause this issue.