/*
 * Copyright (c) 2010-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <QA/Checker/IO.h>

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

#include <Swiften/Base/ByteArray.h>
#include <Swiften/Compress/ZLibCompressor.h>
#include <Swiften/Compress/ZLibDecompressor.h>
#include <Swiften/Compress/ZLibException.h>

using namespace Swift;


class ZLibDecompressorTest : public CppUnit::TestFixture
{
        CPPUNIT_TEST_SUITE(ZLibDecompressorTest);
        CPPUNIT_TEST(testProcess);
        CPPUNIT_TEST(testProcess_Twice);
        CPPUNIT_TEST(testProcess_Invalid);
        CPPUNIT_TEST(testProcess_Huge);
        CPPUNIT_TEST(testProcess_ChunkSize);
        CPPUNIT_TEST_SUITE_END();

    public:
        ZLibDecompressorTest() {}

        void testProcess() {
            ZLibDecompressor testling;
            SafeByteArray result = testling.process(createSafeByteArray("\x78\xda\x4a\xcb\xcf\x07\x00\x00\x00\xff\xff", 11));

            CPPUNIT_ASSERT_EQUAL(createSafeByteArray("foo"), result);
        }

        void testProcess_Twice() {
            ZLibDecompressor testling;
            testling.process(createSafeByteArray("\x78\xda\x4a\xcb\xcf\x07\x00\x00\x00\xff\xff", 11));
            SafeByteArray result = testling.process(createSafeByteArray("\x4a\x4a\x2c\x02\x00\x00\x00\xff\xff", 9));

            CPPUNIT_ASSERT_EQUAL(createSafeByteArray("bar"), result);
        }

        void testProcess_Invalid() {
            ZLibDecompressor testling;
            CPPUNIT_ASSERT_THROW(testling.process(createSafeByteArray("invalid")), ZLibException);
        }

        void testProcess_Huge() {
            std::vector<char> data;
            data.reserve(2048);
            for (unsigned int i = 0; i < 2048; ++i) {
                data.push_back(static_cast<char>(i));
            }
            SafeByteArray original(createSafeByteArray(&data[0], data.size()));
            SafeByteArray compressed = ZLibCompressor().process(original);
            SafeByteArray decompressed = ZLibDecompressor().process(compressed);

            CPPUNIT_ASSERT_EQUAL(original, decompressed);
        }

        void testProcess_ChunkSize() {
            std::vector<char> data;
            data.reserve(1024);
            for (unsigned int i = 0; i < 1024; ++i) {
                data.push_back(static_cast<char>(i));
            }
            SafeByteArray original(createSafeByteArray(&data[0], data.size()));
            SafeByteArray compressed = ZLibCompressor().process(original);
            SafeByteArray decompressed = ZLibDecompressor().process(compressed);

            CPPUNIT_ASSERT_EQUAL(original, decompressed);
        }
};

CPPUNIT_TEST_SUITE_REGISTRATION(ZLibDecompressorTest);