/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include <Swiften/Base/ByteArray.h>
#include <QA/Checker/IO.h>

#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/extensions/TestFactoryRegistry.h>

#include <Swiften/StringCodecs/Base64.h>

using namespace Swift;

class Base64Test : public CppUnit::TestFixture {
		CPPUNIT_TEST_SUITE(Base64Test);
		CPPUNIT_TEST(testEncodeDecodeAllChars);
		CPPUNIT_TEST(testEncodeDecodeOneBytePadding);
		CPPUNIT_TEST(testEncodeDecodeTwoBytesPadding);
		CPPUNIT_TEST(testEncode_NoData);
		CPPUNIT_TEST(testDecode_NoData);
		CPPUNIT_TEST_SUITE_END();

	public:
		void testEncodeDecodeAllChars() {
			ByteArray input;
			for (unsigned char i = 0; i < 255; ++i) {
				input.push_back(i);
			}
			std::string result(Base64::encode(input));

			CPPUNIT_ASSERT_EQUAL(std::string("AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+"), result);
			CPPUNIT_ASSERT_EQUAL(input, Base64::decode(result));
		}

		void testEncodeDecodeOneBytePadding() {
			ByteArray input = createByteArray("ABCDE", 5);

			std::string result = Base64::encode(input);

			CPPUNIT_ASSERT_EQUAL(std::string("QUJDREU="), result);
			CPPUNIT_ASSERT_EQUAL(input, Base64::decode(result));
		}

		void testEncodeDecodeTwoBytesPadding() {
			ByteArray input = createByteArray("ABCD", 4);

			std::string result = Base64::encode(input);

			CPPUNIT_ASSERT_EQUAL(std::string("QUJDRA=="), result);
			CPPUNIT_ASSERT_EQUAL(input, Base64::decode(result));
		}

		void testEncode_NoData() {
			std::string result(Base64::encode(ByteArray()));
			CPPUNIT_ASSERT_EQUAL(std::string(""), result);
		}

		void testDecode_NoData() {
			ByteArray result(Base64::decode(""));
			CPPUNIT_ASSERT_EQUAL(ByteArray(), result);
		}
};

CPPUNIT_TEST_SUITE_REGISTRATION(Base64Test);