package org.gizmo.util;

import java.util.Random;

import org.apache.commons.codec.binary.Base64;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.assertArrayEquals;

import sun.misc.BASE64Encoder;

public class Base64Tests {

 private static byte[] randomBinaryData = new byte[5000000];
 private static long durationCommons = 0;
 private static long durationJava8 = 0;
 private static long durationSun = 0;

 private static byte[] encodedCommons;
 private static byte[] encodedJava8;
 private static String encodedSun;

 @BeforeClass
 public static void setUp() throws Exception {

  //We want to test the APIs against the same data
  new Random().nextBytes(randomBinaryData);  
 }

 @Test
 public void testSunBase64Encode() throws Exception {

  BASE64Encoder encoder = new BASE64Encoder();

  long before = System.currentTimeMillis();

  encodedSun = encoder.encode(randomBinaryData);

  long after = System.currentTimeMillis();
  durationSun = after-before;
  System.out.println("Sun: " + durationSun);
 } 

 @Test
 public void testJava8Base64Encode() throws Exception {

  long before = System.currentTimeMillis();

  java.util.Base64.Encoder encoder = java.util.Base64.getEncoder();
  encodedJava8 = encoder.encode(randomBinaryData);

  long after = System.currentTimeMillis();
  durationJava8 = after-before;
  System.out.println("Java8: " + durationJava8);
 }

 @Test
 public void testCommonsBase64Encode() throws Exception {

  long before = System.currentTimeMillis();

  encodedCommons = Base64.encodeBase64(randomBinaryData);

  long after = System.currentTimeMillis();
  durationCommons = after-before;
  System.out.println("Commons: " + durationCommons);
 }

 @AfterClass
 public static void report() throws Exception {

  //Sanity check
  assertArrayEquals(encodedCommons, encodedJava8);
  System.out.println(durationCommons*1.0/durationJava8);
 }
}