Added Unit Tests for Offix Library

offix/build.gradle

@@ -19,6 +19,11 @@ task cleanBuildPublish(type: GradleBuild) {
 }
 
 android {
+
+    testOptions {
+        unitTests.returnDefaultValues = true
+    }
+
     compileSdkVersion 28
 
     defaultConfig {
@@ -39,6 +44,9 @@ android {
 }
 
 dependencies {
+
+    testImplementation 'org.json:json:20140107'
+
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'com.android.support:appcompat-v7:28.0.0'

offix/src/test/java/org/aerogear/offix/ExampleUnitTest.kt

@@ -0,0 +1,47 @@
+package org.aerogear.offix
+
+import org.junit.Assert
+import org.junit.Test
+
+import com.apollographql.apollo.api.OperationName
+import org.json.JSONObject
+
+import org.aerogear.offix.persistence.Converters
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+class ExampleUnitTest {
+
+    // Dummy Test
+    @Test
+    fun addition_isCorrect() {
+        Assert.assertEquals(4, 2 + 2)
+    }
+
+    // Check String To Json
+    @Test
+    fun CheckStringToJson(){
+        val testJson:JSONObject = Converters().StringToJson("{'name': 'testName'}")
+        Assert.assertEquals("testName",testJson["name"])
+    }
+
+    // Check String to Operation Name
+    @Test
+    fun CheckStringToOperName(){
+        val testOperation:OperationName = Converters().StringToOperName("Test")
+        Assert.assertEquals("Test",testOperation.name())
+    }
+
+    // Check Operation to String
+    @Test
+    fun CheckOperationToString(){
+        val testOperation = OperationName { "Test Operation" }
+        val testString:String = Converters().OperationNameToString(testOperation)
+
+        Assert.assertEquals("Test Operation",testString)
+    }
+
+
+}