java.lang.NullPointerException at org.robolectric.res.ThemeStyleSet$OverlayedStyle.equals

[VIGNESH G]

[Robolectric] com.zoho.sheet.android.AddPeopleActivityTest.trailTestMethod: sdk=28; resources=legacy

[Robolectric] NOTICE: legacy resources mode is deprecated; see http://robolectric.org/migrating/#migrating-to-40

java.lang.NullPointerException

at org.robolectric.res.ThemeStyleSet$OverlayedStyle.equals(ThemeStyleSet.java:67)

at org.robolectric.res.ThemeStyleSet.apply(ThemeStyleSet.java:29)

at org.robolectric.shadows.ShadowLegacyAssetManager.applyThemeStyle(ShadowLegacyAssetManager.java:910)

at org.robolectric.shadows.ShadowLegacyAssetManager.applyStyleToTheme(ShadowLegacyAssetManager.java:950)

at android.content.res.AssetManager.applyStyleToTheme(AssetManager.java)

at android.content.res.ResourcesImpl$ThemeImpl.applyStyle(ResourcesImpl.java:1305)

at android.content.res.Resources$Theme.applyStyle(Resources.java:1420)

at android.view.ContextThemeWrapper.onApplyThemeResource(ContextThemeWrapper.java:186)

at android.app.Activity.onApplyThemeResource(Activity.java:4362)

at android.view.ContextThemeWrapper.initializeTheme(ContextThemeWrapper.java:198)

at android.view.ContextThemeWrapper.setTheme(ContextThemeWrapper.java:140)

at android.app.Activity.setTheme(Activity.java:4354)

at android.support.v7.app.AppCompatActivity.setTheme(AppCompatActivity.java:90)

at org.robolectric.shadows.ShadowActivity.callAttach(ShadowActivity.java:217)

at org.robolectric.android.controller.ActivityController.attach(ActivityController.java:44)

at org.robolectric.android.controller.ActivityController.of(ActivityController.java:27)

at org.robolectric.Robolectric.buildActivity(Robolectric.java:72)

at org.robolectric.Robolectric.buildActivity(Robolectric.java:68)

at org.robolectric.Robolectric.setupActivity(Robolectric.java:76)

at com.****.****.android.AddPeopleActivityTest.setupFragment(AddPeopleActivityTest.java:20)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)

at org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:260)

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)

Process finished with exit code 255

Gradle :

//RoboElectric
testImplementation 'org.robolectric:robolectric:4.0'

Test Class:

@RunWith(RobolectricTestRunner.class)

public class AddPeopleActivityTest {

    public AddPeopleActivity activity;
    @Before
    public void setupFragment() {
//        activity =  Robolectric.setupActivity(AddPeopleActivity.class);
        activity =  Robolectric.buildActivity(AddPeopleActivity.class).create().get();
//        SupportFragmentTestUtil.startVisibleFragment(fragment);
    }