InitializationError for AndroidJunit4

Question

I have a single, simple unit test in my Android app module:

/src/test/java/org.acme.test/SimpleTest.java

When I run:

./gradlew clean testDebug --tests='*.SimpleTest'

I get this exception:

java.lang.Exception: Custom runner class AndroidJUnit4 should have a public constructor with signature AndroidJUnit4(Class testClass)

Why does it think 'AndroidJUnit4' is a custom runner class, when it's a final class?

Why do you keep tests annotated with AndroidJUnit4 in src/test/ directory? Shouldn't it be in src/androidTest directory? — Piotr Wittchen
– Piotr Wittchen, Commented Sep 20, 2016 at 10:39

Aashwin M · Accepted Answer · 2016-11-23 15:37:08Z

2

You might have the test class in test directory instead of androidTest.

answered Nov 23, 2016 at 15:37

Aashwin M

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