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Android Testing in Android Unit Testing - Now Featuring Robolectric! Testing with Robolectric

Kevin Eaton
Kevin Eaton
9,527 Points
Posted by Kevin Eaton
Kevin Eaton
9,527 Points

Robolectric Fails and Manifest

When trying to test with Robolectric in the video, I run the test and get the following:

WARNING: No manifest file found at ./AndroidManifest.xml.Falling back to the Android OS resources only. To remove this warning, annotate your test class with @Config(manifest=Config.NONE).

java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.

When I specify the manifest file directly, such as:

@Config(constants = BuildConfig.class, sdk = Build.VERSION_CODES.LOLLIPOP, manifest = "src/main/AndroidManifest.xml")

I get:

java.lang.NullPointerException at org.robolectric.shadows.ShadowAssetManager$OverlayedStyle.equals(ShadowAssetManager.java:336) at org.robolectric.shadows.ShadowAssetManager.applyThemeStyle(ShadowAssetManager.java:309) at org.robolectric.shadows.ShadowResources$ShadowTheme.applyStyle(ShadowResources.java:246) at android.content.res.Resources$Theme.applyStyle(Resources.java) at android.view.ContextThemeWrapper.onApplyThemeResource(ContextThemeWrapper.java:128) at android.app.Activity.onApplyThemeResource(Activity.java:3661) at android.view.ContextThemeWrapper.initializeTheme(ContextThemeWrapper.java:140) at android.view.ContextThemeWrapper.setTheme(ContextThemeWrapper.java:85) at android.support.v7.app.AppCompatActivity.setTheme(AppCompatActivity.java:86) at org.robolectric.shadows.ShadowActivity.setThemeFromManifest(ShadowActivity.java:94) ....

My gradle file includes the following:

testCompile 'org.robolectric:robolectric:3.1'

Fabio Antunes
Fabio Antunes
Courses Plus Student 10,684 Points

There are a few things you could try; The first one is checking your JUnit Run Configurations and set the Working Directory to $MODULE_DIR$

Since it's been two years, there are newer versions of the framework Roboletric and also Android Studio. Therefore, for anyone else running into similar issues, I would recommend having a look at the robolectric getting started page. http://robolectric.org/getting-started/