NPE in Fresco.initialize(this) in the Application when running Robolectric Unit Test

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Description

Im trying to run a unit test using Robolectric ( testImplementation “org.robolectric:robolectric:3.7.1”) and a NPE appears when executing Fresco.initialize(this) in the main Application. This is the code of the test:

@RunWith(RobolectricTestRunner.class)
public class MainActivityTest {

    @Test
    public void testRecyclerData() {
        final MainActivity activity = Robolectric.setupActivity(MainActivity.class);
        final RecyclerView recyclerView = activity.findViewById(R.id.recycler_view_main_activity);
        final List<Show> list = new ArrayList<Show>();
        list.add(new Show());
        activity.addDataToView(list);
        Assert.assertEquals(1, recyclerView.getAdapter().getItemCount());
    }

}

Here is the stack:

java.lang.NullPointerException
	at java.io.File.<init>(File.java:277)
	at com.facebook.soloader.SoLoader.initImpl(SoLoader.java:198)
	at com.facebook.soloader.SoLoader.init(SoLoader.java:120)
	at com.facebook.soloader.SoLoader.init(SoLoader.java:104)
	at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:63)
	at com.facebook.drawee.backends.pipeline.Fresco.initialize(Fresco.java:39)
	at com.sebas.sysfishapp.videofeed.MainApplication.onCreate(MainApplication.java:16)
	at org.robolectric.android.internal.ParallelUniverse.lambda$setUpApplicationState$0(ParallelUniverse.java:204)
	at org.robolectric.util.PerfStatsCollector.measure(PerfStatsCollector.java:72)
	at org.robolectric.android.internal.ParallelUniverse.setUpApplicationState(ParallelUniverse.java:203)
	at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:333)
	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$1.evaluate(SandboxTestRunner.java:84)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
	at com.sun.proxy.$Proxy3.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:109)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:146)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:128)
	at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
	at java.lang.Thread.run(Thread.java:748)

Reproduction

100%

Solution

[OPTIONAL: Do you know what needs to be done to address this issue? Ideally, provide a pull request which fixes this issue.]

Additional Information

• Fresco version:1.8.1
• Platform version: API 21

[BansookNam]

@foghina @BeforeClass is working thanks. and the method should be static in the TestClass

 @BeforeClass
    public static void before() throws Exception{
        SoLoader.setInTestMode();
    }

[danielnmai]

Confirmed that

    @BeforeClass
    public static void setup() {
        SoLoader.setInTestMode();
    }

works for me.