Update Unit tests

app/build.gradle

@@ -75,13 +75,10 @@ dependencies {
     implementation 'com.jakewharton.timber:timber:4.7.1'
 
     // Test
-    androidTestImplementation 'androidx.test:core:1.0.0'
-    androidTestImplementation 'androidx.test:runner:1.1.0'
-    androidTestImplementation 'androidx.test:rules:1.1.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
-
-    // Required -- JUnit 4 framework
     testImplementation 'junit:junit:4.12'
+    testImplementation "org.mockito:mockito-core:1.10.19"
+    testImplementation "org.robolectric:robolectric:4.2"
+    testImplementation 'io.reactivex.rxjava2:rxjava:2.1.13'
 
     testImplementation "org.powermock:powermock-module-junit4:1.6.6"
     testImplementation "org.powermock:powermock-module-junit4-rule:1.6.6"

app/src/test/java/net/pokeranalytics/android/RealmUnitTest.kt

@@ -8,12 +8,23 @@ import org.junit.Assert.assertThat
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
+import org.junit.runner.RunWith
 import org.powermock.api.mockito.PowerMockito
 import org.powermock.api.mockito.PowerMockito.`when`
 import org.powermock.api.mockito.PowerMockito.mockStatic
+import org.powermock.core.classloader.annotations.PowerMockIgnore
+import org.powermock.core.classloader.annotations.PrepareForTest
+import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor
 import org.powermock.modules.junit4.rule.PowerMockRule
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
 
 
+@RunWith(RobolectricTestRunner::class)
+@Config(manifest = Config.NONE, sdk = [19])
+@PowerMockIgnore("org.mockito.*", "org.robolectric.*", "android.*")
+@SuppressStaticInitializationFor("io.realm.internal.Util")
+@PrepareForTest(Realm::class, RealmLog::class)
 open class RealmUnitTest {
 
 	@get:Rule