/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.user.server;
import junit.framework.TestCase;
/**
* Tests for the {@link com.google.gwt.user.server.Base64Utils Base64Utils} class.
*/
public class Base64Test extends TestCase {
/**
* Tests that base 64 encoding/decoding round trips are lossless.
*/
public static void testBase64Utils() {
base64RoundTrip((byte[]) null);
base64RoundTrip(new byte[0]);
java.util.Random r = new java.util.Random(100);
for (int i = 0; i < 10000; i++) {
base64RoundTrip(r);
}
}
private static void base64RoundTrip(java.util.Random r) {
int len = r.nextInt(10);
byte[] b1 = new byte[len];
r.nextBytes(b1);
base64RoundTrip(b1);
}
private static void base64RoundTrip(byte[] b1) {
String s = Base64Utils.toBase64(b1);
if (b1 == null) {
assert s == null;
} else {
assert s != null;
if (b1.length == 0) {
assert s.length() == 0;
} else {
assert s.length() != 0;
}
}
byte[] b2 = Base64Utils.fromBase64(s);
if (b1 == null) {
assert b2 == null;
return;
}
assert b2 != null;
assert (b1.length == b2.length);
for (int i = 0; i < b1.length; i++) {
assert b1[i] == b2[i];
}
}
}