Adding tests to confirm manual extensions exist

Author: Brian Melton

graphsdk/src/androidTest/java/com/microsoft/graph/extensions/ManualExtensionsTests.java

@@ -0,0 +1,31 @@
+package com.microsoft.graph.extensions;
+
+import android.test.AndroidTestCase;
+
+import junit.framework.Assert;
+
+/**
+ * These tests verify that manually-written classes are preserved from version-to-version.
+ *
+ * @author brianmel
+ */
+public class ManualExtensionsTests extends AndroidTestCase {
+
+    public void testChunkedUploadRequestPreserved() {
+        final String className = "com.microsoft.graph.extensions.ChunkedUploadRequest";
+        try {
+            Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            Assert.fail("Extension [" + className + "] not found.");
+        }
+    }
+
+    public void testChunkedUploadResultPreserved() {
+        final String className = "com.microsoft.graph.extensions.ChunkedUploadResult";
+        try {
+            Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            Assert.fail("Extension [" + className + "] not found.");
+        }
+    }
+}