/*
 * Copyright 2002-2014 the original author or authors.
 *
 * 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 org.springframework.util;

import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;

import org.springframework.android.test.Assert;

import android.test.AndroidTestCase;

/**
 * @author Roy Clarkson
 */
public class Base64UtilsTests extends AndroidTestCase {

	private static final String UTF8 = Charset.forName("UTF-8").displayName();

	private static final String SOURCE = "Man is distinguished, not only by his reason, but by this singular passion from other animals, which is a lust of the mind, that by a perseverance of delight in the continued and indefatigable generation of knowledge, exceeds the short vehemence of any carnal pleasure.";

	private static final String ENCODED = "TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0aGlzIHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2YgdGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGludWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=";

	public void testEncodeBytes() throws UnsupportedEncodingException {
		byte[] expected = ENCODED.getBytes();
		byte[] actual = Base64Utils.encode(SOURCE.getBytes(UTF8));
		Assert.assertArrayEquals(expected, actual);
	}

	public void testEncodeToString() throws UnsupportedEncodingException {
		String actual = Base64Utils.encodeToString(SOURCE.getBytes(UTF8));
		assertEquals(ENCODED, actual);
	}

	public void testDecodeBytes() throws UnsupportedEncodingException {
		byte[] expected = SOURCE.getBytes(UTF8);
		byte[] actual = Base64Utils.decode(ENCODED.getBytes());
		Assert.assertArrayEquals(expected, actual);
	}

	public void testDecodeFromString() throws UnsupportedEncodingException {
		byte[] expected = SOURCE.getBytes(UTF8);
		byte[] actual = Base64Utils.decodeFromString(ENCODED);
		Assert.assertArrayEquals(expected, actual);
	}

}