added test framework - robolectric

android/app/build.gradle

@@ -1,3 +1,23 @@
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.1.2'
+    }
+}
+
+allprojects {
+    repositories {
+        mavenLocal()
+        jcenter()
+        maven {
+            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+            url "$projectDir/../../node_modules/react-native/android"
+        }
+    }
+}
+
 apply plugin: 'com.android.library'
 
 android {
@@ -24,6 +44,9 @@ android {
             minifyEnabled false
         }
     }
+    lintOptions {
+        abortOnError false
+    }
 }
 
 repositories {
@@ -33,10 +56,21 @@ repositories {
     }
 }
 
+allprojects { p ->
+    p.tasks.whenTaskAdded { task ->
+        if (task.name.toLowerCase().contains('lint')) {
+            task.enabled = false;
+        }
+    }
+}
+
 dependencies {
     compile fileTree(dir: "libs", include: ["*.jar"])
     compile "com.aurelhubert:ahbottomnavigation:1.2.3"
     compile "com.android.support:appcompat-v7:23.0.1"
     compile 'com.android.support:design:23.1.1'
     compile "com.facebook.react:react-native:+"  // From node_modules
+
+    testCompile 'junit:junit:4.12'
+    testCompile "org.robolectric:robolectric:3.1.1"
 }

android/app/src/test/java/com/reactnativenavigation/FirstTest.java

@@ -0,0 +1,19 @@
+package com.reactnativenavigation;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+@RunWith(RobolectricTestRunner.class)
+public class FirstTest {
+
+    @Test
+    public void woohoo() {
+        assertThat(1+2, is(3));
+    }
+
+
+}