| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.jackrabbit.util; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.IOException; |
| import java.io.StringWriter; |
| import java.io.ByteArrayOutputStream; |
| import java.io.ByteArrayInputStream; |
| import java.util.Random; |
| import java.util.Arrays; |
| |
| /** |
| * Test cases for Base64 encode / decode. |
| */ |
| public class Base64Test extends TestCase { |
| |
| private Random _random = new Random(); |
| |
| /** |
| * @return Returns the _random. |
| */ |
| protected Random getRandom() { |
| return this._random; |
| } |
| |
| /** |
| * Tests that whitespace characters are ignored within base64 data. |
| */ |
| public void testWhitespace() throws Exception { |
| ByteArrayOutputStream buffer = new ByteArrayOutputStream(); |
| Base64.decode(" d G\tV \tzdA\n= =\n", buffer); |
| byte[] data = buffer.toByteArray(); |
| assertEquals("test", new String(data, "US-ASCII")); |
| } |
| |
| /** |
| * Tests that base 64 encoding/decoding round trips are lossless. |
| */ |
| public void testBase64() throws Exception { |
| base64RoundTrip(new byte[0]); |
| |
| for (int i = 0; i < 10000; i++) { |
| base64RoundTrip(); |
| } |
| } |
| |
| public void testBase64Streaming() throws Exception { |
| byte[] data = new byte[0x100000]; |
| getRandom().nextBytes(data); |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| Base64.encode(new ByteArrayInputStream(data), baos); |
| byte[] encData = baos.toByteArray(); |
| |
| baos = new ByteArrayOutputStream(); |
| Base64.decode(new ByteArrayInputStream(encData), baos); |
| byte[] decData = baos.toByteArray(); |
| assertTrue(Arrays.equals(data, decData)); |
| } |
| |
| private void base64RoundTrip() throws Exception { |
| int len = getRandom().nextInt(0x1000); |
| byte[] b1 = new byte[len]; |
| getRandom().nextBytes(b1); |
| |
| base64RoundTrip(b1); |
| } |
| |
| private void base64RoundTrip(byte[] ba) throws Exception { |
| StringWriter sw = new StringWriter(); |
| Base64.encode(ba, 0, ba.length, sw); |
| String s = sw.toString(); |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| Base64.decode(s, baos); |
| byte[] ba2 = baos.toByteArray(); |
| assertNotNull(ba2); |
| assertEquals(ba.length, ba2.length); |
| |
| for (int i = 0; i < ba.length; i++) { |
| assertEquals(ba[i], ba2[i]); |
| } |
| } |
| |
| public void testDecodeOrEncode() throws IOException { |
| assertEquals("", Base64.decodeOrEncode(Base64.decodeOrEncode(""))); |
| assertEquals("test", Base64.decodeOrEncode(Base64.decodeOrEncode("test"))); |
| assertEquals("{base64}dGVzdA==", Base64.decodeOrEncode("test")); |
| assertEquals("test", Base64.decodeOrEncode("{base64}dGVzdA==")); |
| } |
| |
| public void testDecodeIfEncoded() throws IOException { |
| assertEquals(null, Base64.decodeIfEncoded(null)); |
| assertEquals("", Base64.decodeIfEncoded("")); |
| assertEquals("", Base64.decodeIfEncoded("{base64}")); |
| assertEquals("test", Base64.decodeIfEncoded("test")); |
| assertEquals("test", Base64.decodeIfEncoded("{base64}dGVzdA==")); |
| } |
| |
| public void testStringEncodeDecode() throws IOException { |
| assertEquals("", Base64.decode(Base64.encode(""))); |
| assertEquals("test", Base64.decode(Base64.encode("test"))); |
| assertEquals("dGVzdA==", Base64.encode("test")); |
| assertEquals("test", Base64.decode("dGVzdA==")); |
| } |
| |
| } |