test failed after upgrade to gradle 4.4

[hxlich]

Description

After update Android Studio to 3.1, gradle update to version 4.4, test runs from Android Studio are broken with the following error:

java.lang.VerifyError: class org.robolectric.android.fakes.RoboMonitoringInstrumentation overrides final method specifyDexMakerCacheProperty.()V

	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:642)
	at org.robolectric.internal.bytecode.SandboxClassLoader.maybeInstrumentClass(SandboxClassLoader.java:130)
	at org.robolectric.internal.bytecode.SandboxClassLoader.lambda$findClass$0(SandboxClassLoader.java:107)
	at org.robolectric.util.PerfStatsCollector.measure(PerfStatsCollector.java:50)
	at org.robolectric.internal.bytecode.SandboxClassLoader.findClass(SandboxClassLoader.java:106)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at org.robolectric.android.internal.ParallelUniverse.createInstrumentation(ParallelUniverse.java:308)
	at org.robolectric.android.internal.ParallelUniverse.initInstrumentation(ParallelUniverse.java:276)
	at org.robolectric.android.internal.ParallelUniverse.setUpApplicationState(ParallelUniverse.java:205)
	at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:335)
	at org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:245)
	at org.robolectric.internal.SandboxTestRunner.runChild(SandboxTestRunner.java:130)
	at org.robolectric.internal.SandboxTestRunner.runChild(SandboxTestRunner.java:42)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.robolectric.internal.SandboxTestRunner$1.evaluate(SandboxTestRunner.java:84)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMainV2.main(AppMainV2.java:131)

Steps to Reproduce

Robolectric & Android Version

• compileSdkVersion 26
• minSdkVersion 17
• org.robolectric:robolectric:3.8
• org.robolectric:shadows-support-v4:3.3.2

Link to a public git repo demonstrating the problem:

Sample code:

@RunWith(RobolectricTestRunner.class)
@Config(constants = BuildConfig.class)
public class MyFragmentTest {
    @Test
    public void testFragment_shouldNotBeNull() throws Exception {
        MyFragment fragment = (MyFragment) MyFragment.newInstance();
        SupportFragmentTestUtil.startFragment(fragment);
        assertNotNull(fragment);
    }
}

[pedrohfp]

I'm exactly with the same problem

[matejdro]

Same issue here. Robolectric blocks migration to 3.1.0 gradle plugin on our project because of this.

[brettchabot]

See #3751

[matejdro]

This is not the same issue. #3751 is about using Robolectric together with Espresso test. But this issue happens without Espresso.

[brettchabot]

The workaround should be the same though. Upgrade your com.android.support.test.runner/monitor dependency to 1.0.2-alpha1

How is your gradle file configured now wrt com.android.support.test dependencies ?

[matejdro]

I don't think you understand. I do not have com.android.support.test.runner in Robolectric's classpath at all. My build.gradle looks like this:

    testImplementation "org.robolectric:robolectric:$robolectricVersion"
    androidTestImplementation "com.android.support.test:runner:$espressoTestRunnerVersion"
    androidTestImplementation "com.android.support.test.espresso:espresso-core:$espressoCoreVersion"

Robolectric and test runner are not in the same classpath (Robolectric is in test, while test runner is in andoridTest, so they should not clash or even see each other).

[brettchabot]

Sorry for the trouble...

I cannot find the link now but IIRC there is a gradle bug where androidTest dependencies leak into test.

Try this as a workaround:
testImplementation "com.android.support.test:monitor:1.0.2-alpha1"

[hxlich]

@brettchabot thx for the workaround, it works for me

[matejdro]

After a week of not getting the error I can also confirm that workaround is working for me. Thanks!

[andrewclam1991]

I use testImplementation "com.android.support.test:monitor:1.0.2" confirm working still.