use mock realm in tests

Habitica/build.gradle

@@ -126,9 +126,9 @@ dependencies {
     testCompile "junit:junit:4.10"
     testCompile "org.assertj:assertj-core:1.7.0"
     testCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.5'
-    testCompile "org.robolectric:robolectric:3.2"
-    testCompile 'org.robolectric:shadows-multidex:3.1'
-    testCompile "org.robolectric:shadows-support-v4:3.1"
+    testCompile "org.robolectric:robolectric:3.3.2"
+    testCompile 'org.robolectric:shadows-multidex:3.3.2'
+    testCompile "org.robolectric:shadows-support-v4:3.3.2"
     testCompile "org.mockito:mockito-core:1.10.19"
 
     //Leak Detection

Habitica/src/main/java/com/habitrpg/android/habitica/modules/RepositoryModule.java

@@ -58,7 +58,7 @@ public class RepositoryModule {
     }
 
     @Provides
-    Realm providesRealm() {
+    public Realm providesRealm() {
         return Realm.getDefaultInstance();
     }
 

Habitica/src/test/java/com/habitrpg/android/habitica/TestApplication.java

@@ -0,0 +1,20 @@
+package com.habitrpg.android.habitica;
+
+import com.habitrpg.android.habitica.components.AppComponent;
+import com.habitrpg.android.habitica.components.DaggerAppComponent;
+import com.habitrpg.android.habitica.modules.AppModule;
+
+public class TestApplication extends HabiticaBaseApplication {
+    @Override
+    protected AppComponent initDagger() {
+            return DaggerAppComponent.builder()
+                    .appModule(new AppModule(this))
+                    .developerModule(new DebugDeveloperModule())
+                    .repositoryModule(new TestRepositoryModule())
+                    .build();
+    }
+
+    @Override
+    protected void setupRealm() {
+    }
+}

Habitica/src/test/java/com/habitrpg/android/habitica/TestRepositoryModule.java

@@ -0,0 +1,18 @@
+package com.habitrpg.android.habitica;
+
+import com.habitrpg.android.habitica.modules.RepositoryModule;
+
+import org.mockito.Mockito;
+
+import dagger.Provides;
+import io.realm.Realm;
+
+class TestRepositoryModule extends RepositoryModule {
+
+
+    @Provides
+    @Override
+    public Realm providesRealm() {
+        return Mockito.mock(Realm.class);
+    }
+}

Habitica/src/test/resources/robolectric.properties

@@ -1,3 +1,4 @@
 sdk=21
 packageName=com.habitrpg.android.habitica
 manifest=AndroidManifest.xml
+application=comh.habitrpg.android.habitica.TestApplication