IssueTracker

What steps will reproduce the problem?

1. Create a SQLiteOpenHelper implementation
2. Create a ContentProvider using it
3. Create a ProviderTestCase2 implementation to test the provider
4. Use AndroidJUnitRunner and JUnit4-style tests to run the test case


What is the expected output? What do you see instead?

The same test case works fine with JUnit3 and gives proper results (test passed/failed).
When configured for JUnit4, I get a java.lang.NullPointerException on the context passed to my SQLiteOpenHelper's constructor which is automatically called during ProviderTestCase2#setUp().

Full trace :

java.lang.NullPointerException
at android.test.RenamingDelegatingContext.openOrCreateDatabase(RenamingDelegatingContext.java:157)
at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:235)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:224)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
at com.foobar.bbb.FooProvider.insert(FooProvider.java:41)
at android.content.ContentProvider$Transport.insert(ContentProvider.java:213)
at android.content.ContentResolver.insert(ContentResolver.java:914)
at com.foobar.bbb.FooProviderTestCase.testDummy(FooProviderTestCase.java:49)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:54)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:228)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)


What version of the product are you using? On what operating system?

com.android.support.test.espresso:espresso-core:2.1
Android Studio 1.2
JDK 1.8.0
Fedora 20


Please provide any additional information below.

I am joining a sample Android Studio project which reproduces the problem. To switch between Junit3/4 just comment/uncomment marked lines in FooProviderTestCase.java and app/build.gradle