/*
    SPDX-FileCopyrightText: 2012 Ni Hui <shuizhuyuanluo@126.com>

    SPDX-License-Identifier: GPL-2.0-or-later
*/

#include "kencodingprobertest.h"

#include <QDir>
#include <QTest>
#include <kencodingprober.h>

static KEncodingProber *ep = nullptr;

void KEncodingProberTest::initTestCase()
{
    ep = new KEncodingProber;
}

void KEncodingProberTest::cleanupTestCase()
{
    delete ep;
    ep = nullptr;
}

void KEncodingProberTest::cleanup()
{
    ep->reset();
}

void KEncodingProberTest::testReset()
{
    ep->feed(QByteArray("some random data @*@#&jd"));
    ep->reset();
    QCOMPARE(ep->state(), KEncodingProber::Probing);
    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
}

void KEncodingProberTest::testProbe()
{
    // utf-8
    ep->setProberType(KEncodingProber::Universal);
    ep->feed(QByteArray::fromHex("e998bfe5b094e58d91e696afe5b1b1e88489"));
    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
    ep->reset();

    // gb18030
    ep->setProberType(KEncodingProber::ChineseSimplified);
    ep->feed(QByteArray::fromHex("d7d4d3c9b5c4b0d9bfc6c8abcae9"));
    QCOMPARE(ep->encoding().toLower(), QByteArray("gb18030"));
    ep->reset();

    // shift_jis
    ep->setProberType(KEncodingProber::Japanese);
    ep->feed(QByteArray::fromHex("8374838a815b955389c88e969354"));
    QCOMPARE(ep->encoding().toLower(), QByteArray("shift_jis"));
    ep->reset();

    // big5
    ep->setProberType(KEncodingProber::ChineseTraditional);
    ep->feed(QByteArray::fromHex("aefcafc7a6caa474a141a6b3ae65a444a46a"));
    QCOMPARE(ep->encoding().toLower(), QByteArray("big5"));
    ep->reset();

    // binary data, just make sure we do not crash (cf. crash in bug #357341)
    const QDir dataDir(QFINDTESTDATA("data"));
    const QString binaryFile = dataDir.filePath(QStringLiteral("binary_data"));
    QFile file(binaryFile);
    QVERIFY(file.open(QIODevice::ReadOnly));
    QByteArray binaryData(file.readAll());
    ep->setProberType(KEncodingProber::Universal);
    ep->feed(binaryData);
    QCOMPARE(ep->encoding().toLower(), QByteArray("utf-8"));
    ep->reset();
}

QTEST_MAIN(KEncodingProberTest)
