Add jUnit Test

Author: archcosmo

kubernetes/src/test/java/io/kubernetes/client/JSONTest.java

@@ -0,0 +1,27 @@
+package io.kubernetes.client;
+
+import okio.ByteString;
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.*;
+
+public class JSONTest {
+
+    @Test
+    public void testSerializeByteArray() {
+        final JSON json = new JSON();
+        final String plainText = "string that contains '=' when encoded";
+        final String base64String = json.serialize(plainText.getBytes());
+        //serialize returns string surrounded by quotes: "\"[base64]\""
+        final String pureString = base64String.replaceAll("^\"|\"$", "");
+        final ByteString byteStr = ByteString.decodeBase64(pureString);
+
+        //Check encoded to valid base64
+        assertNotNull(byteStr);
+
+        //Check encoded string correctly
+        final String decodedText =new String(byteStr.toByteArray());
+        assertThat(decodedText, is(plainText));
+    }
+}