Add test for IllegalStateException of FileDisplayActivity

Signed-off-by: Unpublished <unpublished@gmx.net>

src/androidTest/java/com/owncloud/android/ui/activity/FileDisplayActivityTest.java

@@ -0,0 +1,23 @@
+package com.owncloud.android.ui.activity;
+
+import com.owncloud.android.AbstractIT;
+
+import org.junit.Rule;
+import org.junit.Test;
+
+import androidx.test.core.app.ActivityScenario;
+import androidx.test.rule.GrantPermissionRule;
+
+import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
+
+public class FileDisplayActivityTest extends AbstractIT {
+
+    @Rule public GrantPermissionRule mRuntimePermissionRule = GrantPermissionRule.grant(WRITE_EXTERNAL_STORAGE);
+
+    @Test
+    public void testSetupToolbar() {
+        try (ActivityScenario<FileDisplayActivity> scenario = ActivityScenario.launch(FileDisplayActivity.class)) {
+            scenario.recreate();
+        }
+    }
+}