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Android JUnit testing ClassNotFoundException

I am trying to configure JUnit to test my actions for an Android project.

The Android project works fine both on AVD and on the device (there are still a few errors, so I want to add some unit tests)

I followed the steps from these websites (they are more or less the same, but I still checked them all to make sure everything was done correctly)
http://mobile.tutsplus.com/tutorials/android/android-sdk-junit-testing/
http://developer.android.com/tools/testing/testing_eclipse.html

I created a test project using the same workspace as my project and created my first test case. When I tried to run the test, I got the following:

[2012-12-09 19:42:56 - AssassinTest] Android Launch!
[2012-12-09 19:42:56 - AssassinTest] adb is working fine.
[2012-12-09 19:42:56 - AssassinTest] Running android.test.InstrumentationTestRunner launching JUnit [2012-12-09 19:42:56 - AssassinTest] Auto target mode: preferred AVD "Google_Level10" is available on the emulator emulator -5554 "
[2012-12-09 19:42:56 - AssassinTest] Download AssassinTest.apk to the device emulator-5554

[2012-12-09 19:42:57 - AssassinTest] Installing AssassinTest.apk ...
[2012-12-09 19:42:59 - AssassinTest] Success!
[2012-12-09 19:42:59 - AssassinTest] Dependence on the project was found, installation: Assassin
[2012-12-09 19:43:01 - Assassin] The application has already been deployed. No need to reinstall.
[2012-12-09 19:43:01 - AssassinTest] Launching the android.test.InstrumentationTestRunner toolkit on the device emulator-5554
[2012-12-09 19:43:01 - AssassinTest] Collection of test information
[2012-12-09 19:43:04 - AssassinTest] Test run failed: instrumentation failed due to "java.lang.ClassNotFoundException"

And here is what I get from LogCat:

12-09 19:43:02.929: E/dalvikvm(1255): Unable to resolve Ludes/assassi/test/InGameActivityTest; annotation class 19 12-09 19:43:02.929: D/AndroidRuntime(1255): Shutting down VM 12-09 19:43:02.929: W/dalvikvm(1255): threadid=1: thread exiting with uncaught exception (group=0x40015560) 12-09 19:43:02.961: E/AndroidRuntime(1255): FATAL EXCEPTION: main 12-09 19:43:02.961: E/AndroidRuntime(1255): java.lang.NoClassDefFoundError: org.junit.Test 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.Method.getDeclaredAnnotations(Native Method) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.Method.getDeclaredAnnotations(Method.java:262) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.AccessibleObject.getAnnotations(AccessibleObject.java:188) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.AccessibleObject.getAnnotation(AccessibleObject.java:196) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.TestMethod.getAnnotation(TestMethod.java:60) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.annotation.HasMethodAnnotation.apply(HasMethodAnnotation.java:39) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.annotation.HasMethodAnnotation.apply(HasMethodAnnotation.java:30) 12-09 19:43:02.961: E/AndroidRuntime(1255): at com.android.internal.util.Predicates$OrPredicate.apply(Predicates.java:106) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.annotation.HasAnnotation.apply(HasAnnotation.java:42) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.annotation.HasAnnotation.apply(HasAnnotation.java:31) 12-09 19:43:02.961: E/AndroidRuntime(1255): at com.android.internal.util.Predicates$NotPredicate.apply(Predicates.java:122) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.TestSuiteBuilder.satisfiesAllPredicates(TestSuiteBuilder.java:254) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.suitebuilder.TestSuiteBuilder.build(TestSuiteBuilder.java:184) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.test.InstrumentationTestRunner.onCreate(InstrumentationTestRunner.java:373) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3246) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.app.ActivityThread.access$2200(ActivityThread.java:117) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:969) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.os.Handler.dispatchMessage(Handler.java:99) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.os.Looper.loop(Looper.java:130) 12-09 19:43:02.961: E/AndroidRuntime(1255): at android.app.ActivityThread.main(ActivityThread.java:3683) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.Method.invokeNative(Native Method) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.reflect.Method.invoke(Method.java:507) 12-09 19:43:02.961: E/AndroidRuntime(1255): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 12-09 19:43:02.961: E/AndroidRuntime(1255): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 12-09 19:43:02.961: E/AndroidRuntime(1255): at dalvik.system.NativeStart.main(Native Method) 12-09 19:43:02.961: E/AndroidRuntime(1255): Caused by: java.lang.ClassNotFoundException: org.junit.Test in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/system/framework/android.test.runner.jar:/data/app/udes.assassin.test-1.apk:/data/app/udes.assassin-2.apk] 12-09 19:43:02.961: E/AndroidRuntime(1255): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.ClassLoader.loadClass(ClassLoader.java:551) 12-09 19:43:02.961: E/AndroidRuntime(1255): at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 12-09 19:43:02.961: E/AndroidRuntime(1255): ... 25 more

While searching in several forums, I read that this could be caused by a bad manifest file, but I don’t see what is wrong with mine

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="udes.assassin.test" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="10" /> <instrumentation android:name="android.test.InstrumentationTestRunner" android:targetPackage="udes.assassin" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <uses-library android:name="android.test.runner" /> </application> </manifest>

And finally, this is the code in my only JUnit class (for now)

 package udes.assassin.test; import static org.junit.Assert.*; import org.junit.Before; import org.junit.Test; import udes.assassin.InGameActivity; import android.test.ActivityInstrumentationTestCase2; public class InGameActivityTest extends ActivityInstrumentationTestCase2<InGameActivity> { public InGameActivityTest() { super("udes.assassin", InGameActivity.class); } public InGameActivityTest(Class<InGameActivity> activityClass) { super(activityClass); } @Before protected void setUp() throws Exception { super.setUp(); } @Test public void testSetItemPosition() { fail("Not yet implemented"); } }

thanks

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3 answers

Probably because JUnit is not in your class path. Go to Project -> Properties -> Java Build Path -> Order and Export and check if the JUnit field is cleared.

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I notice that you are using @Test annotation:

 @Test public void testSetItemPosition() { fail("Not yet implemented"); }

This is introduced by junit4 and the junt3 based android test. see here

You must remove the @Test annotation.

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Same error here, another reason ...

My test class was in an anonymous package, but it did not match AndroidManifest.xml:

 <instrumentation android:name="android.test.InstrumentationTestRunner" android:targetPackage="micharg.nameanimalthing" />
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