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qt5base-lts/tests/auto/utf8/tst_utf8.cpp
Qt by Nokia 38be0d1383 Initial import from the monolithic Qt. 
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <qtextcodec.h>
#include <qsharedpointer.h>
//TESTED_CLASS=
//TESTED_FILES=
static const char utf8bom[] = "\xEF\xBB\xBF";
class tst_Utf8 : public QObject
{
Q_OBJECT
public:
// test data:
QTextCodec *codec;
QString (*from8BitPtr)(const char *, int);
QByteArray (QString:: *to8Bit)() const;
inline QString from8Bit(const QByteArray &ba)
{ return from8BitPtr(ba.constData(), ba.length()); }
public slots:
void initTestCase();
void init();
private slots:
void roundTrip_data();
void roundTrip();
void charByChar_data();
void charByChar();
void invalidUtf8_data();
void invalidUtf8();
void nonCharacters_data();
void nonCharacters();
};
void tst_Utf8::initTestCase()
{
QTest::addColumn<bool>("useLocale");
QTest::newRow("utf8codec") << false;
// is the locale UTF-8?
if (QString(QChar(QChar::ReplacementCharacter)).toLocal8Bit() == "\xEF\xBF\xBD") {
QTest::newRow("localecodec") << true;
qDebug() << "locale is utf8";
}
}
void tst_Utf8::init()
{
QFETCH_GLOBAL(bool, useLocale);
if (useLocale) {
codec = QTextCodec::codecForLocale();
from8BitPtr = &QString::fromLocal8Bit;
to8Bit = &QString::toLocal8Bit;
} else {
codec = QTextCodec::codecForMib(106);
from8BitPtr = &QString::fromUtf8;
to8Bit = &QString::toUtf8;
}
}
void tst_Utf8::roundTrip_data()
{
QTest::addColumn<QByteArray>("utf8");
QTest::addColumn<QString>("utf16");
QTest::newRow("empty") << QByteArray() << QString();
QTest::newRow("nul") << QByteArray("", 1) << QString(QChar(QChar::Null));
static const char ascii[] = "This is a standard US-ASCII message";
QTest::newRow("ascii") << QByteArray(ascii) << ascii;
static const char ascii2[] = "\1This\2is\3an\4US-ASCII\020 message interspersed with control chars";
QTest::newRow("ascii2") << QByteArray(ascii2) << ascii2;
static const char utf8_1[] = "\302\240"; // NBSP
QTest::newRow("utf8_1") << QByteArray(utf8_1) << QString(QChar(QChar::Nbsp));
static const char utf8_2[] = "\342\202\254"; // Euro symbol
QTest::newRow("utf8_2") << QByteArray(utf8_2) << QString(QChar(0x20AC));
#if 0
// Can't test this because QString::fromUtf8 consumes it
static const char utf8_3[] = "\357\273\277"; // byte order mark
QTest::newRow("utf8_3") << QByteArray(utf8_3) << QString(QChar(QChar::ByteOrderMark));
#endif
static const char utf8_4[] = "\357\277\275"; // replacement char
QTest::newRow("utf8_4") << QByteArray(utf8_4) << QString(QChar(QChar::ReplacementCharacter));
static const char utf8_5[] = "\360\220\210\203"; // U+010203
static const uint utf32_5[] = { 0x010203 };
QTest::newRow("utf8_5") << QByteArray(utf8_5) << QString::fromUcs4(utf32_5, 1);
static const char utf8_6[] = "\364\217\277\275"; // U+10FFFD
static const uint utf32_6[] = { 0x10FFFD };
QTest::newRow("utf8_6") << QByteArray(utf8_6) << QString::fromUcs4(utf32_6, 1);
static const char utf8_7[] = "abc\302\240\303\241\303\251\307\275 \342\202\254def";
static const ushort utf16_7[] = { 'a', 'b', 'c', 0x00A0,
0x00E1, 0x00E9, 0x01FD,
' ', 0x20AC, 'd', 'e', 'f', 0 };
QTest::newRow("utf8_7") << QByteArray(utf8_7) << QString::fromUtf16(utf16_7);
static const char utf8_8[] = "abc\302\240\303\241\303\251\307\275 \364\217\277\275 \342\202\254def";
static const uint utf32_8[] = { 'a', 'b', 'c', 0x00A0,
0x00E1, 0x00E9, 0x01FD,
' ', 0x10FFFD, ' ',
0x20AC, 'd', 'e', 'f', 0 };
QTest::newRow("utf8_8") << QByteArray(utf8_8) << QString::fromUcs4(utf32_8);
}
void tst_Utf8::roundTrip()
{
QFETCH(QByteArray, utf8);
QFETCH(QString, utf16);
QCOMPARE((utf16.*to8Bit)(), utf8);
QCOMPARE(from8Bit(utf8), utf16);
QCOMPARE((from8Bit(utf8).*to8Bit)(), utf8);
QCOMPARE(from8Bit((utf16.*to8Bit)()), utf16);
}
void tst_Utf8::charByChar_data()
{
roundTrip_data();
}
void tst_Utf8::charByChar()
{
QFETCH(QByteArray, utf8);
QFETCH(QString, utf16);
{
// from utf16 to utf8 char by char:
QSharedPointer<QTextEncoder> encoder = QSharedPointer<QTextEncoder>(codec->makeEncoder());
QByteArray encoded;
for (int i = 0; i < utf16.length(); ++i) {
encoded += encoder->fromUnicode(utf16.constData() + i, 1);
QVERIFY(!encoder->hasFailure());
}
if (encoded.startsWith(utf8bom))
encoded = encoded.mid(strlen(utf8bom));
QCOMPARE(encoded, utf8);
}
{
// from utf8 to utf16 char by char:
QSharedPointer<QTextDecoder> decoder = QSharedPointer<QTextDecoder>(codec->makeDecoder());
QString decoded;
for (int i = 0; i < utf8.length(); ++i) {
decoded += decoder->toUnicode(utf8.constData() + i, 1);
QVERIFY(!decoder->hasFailure());
}
QCOMPARE(decoded, utf16);
}
}
void tst_Utf8::invalidUtf8_data()
{
QTest::addColumn<QByteArray>("utf8");
QTest::newRow("1char") << QByteArray("\x80");
QTest::newRow("2chars-1") << QByteArray("\xC2\xC0");
QTest::newRow("2chars-2") << QByteArray("\xC3\xDF");
QTest::newRow("2chars-3") << QByteArray("\xC7\xF0");
QTest::newRow("3chars-1") << QByteArray("\xE0\xA0\xC0");
QTest::newRow("3chars-2") << QByteArray("\xE0\xC0\xA0");
QTest::newRow("4chars-1") << QByteArray("\xF0\x90\x80\xC0");
QTest::newRow("4chars-2") << QByteArray("\xF0\x90\xC0\x80");
QTest::newRow("4chars-3") << QByteArray("\xF0\xC0\x80\x80");
// Surrogate pairs must now be present either
// U+D800: 1101 10 0000 00 0000
// encoding: xxxz:1101 xz10:0000 xz00:0000
QTest::newRow("hi-surrogate") << QByteArray("\xED\xA0\x80");
// U+DC00: 1101 11 0000 00 0000
// encoding: xxxz:1101 xz11:0000 xz00:0000
QTest::newRow("lo-surrogate") << QByteArray("\xED\xB0\x80");
// not even in pair:
QTest::newRow("surrogate-pair") << QByteArray("\xED\xA0\x80\xED\xB0\x80");
// Characters outside the Unicode range:
// 0x110000: 00 0100 01 0000 00 0000 00 0000
// encoding: xxxx:z100 xz01:0000 xz00:0000 xz00:0000
QTest::newRow("non-unicode-1") << QByteArray("\xF4\x90\x80\x80");
// 0x200000: 00 1000 00 0000 00 0000 00 0000
// encoding: xxxx:xz00 xz00:1000 xz00:0000 xz00:0000 xz00:0000
QTest::newRow("non-unicode-2") << QByteArray("\xF8\x88\x80\x80\x80");
// 0x04000000: 0100 00 0000 00 0000 00 0000 00 0000
// encoding: xxxx:xxz0 xz00:0100 xz00:0000 xz00:0000 xz00:0001 xz00:0001
QTest::newRow("non-unicode-3") << QByteArray("\xFC\x84\x80\x80\x80\x80");
// 0x7fffffff: 1 11 1111 11 1111 11 1111 11 1111 11 1111
// encoding: xxxx:xxz0 xz00:0100 xz00:0000 xz00:0000 xz00:0001 xz00:0001
QTest::newRow("non-unicode-3") << QByteArray("\xFD\xBF\xBF\xBF\xBF\xBF");
// As seen above, 0xFE and 0xFF never appear:
QTest::newRow("fe") << QByteArray("\xFE");
QTest::newRow("fe-bis") << QByteArray("\xFE\xBF\xBF\xBF\xBF\xBF\xBF");
QTest::newRow("ff") << QByteArray("\xFF");
QTest::newRow("ff-bis") << QByteArray("\xFF\xBF\xBF\xBF\xBF\xBF\xBF\xBF");
// some combinations in UTF-8 are invalid even though they have the proper bits set
// these are known as overlong sequences
// "A": U+0041: 01 00 0001
// overlong 2: xxz0:0001 xz00:0001
QTest::newRow("overlong-1-2") << QByteArray("\xC1\x81");
// overlong 3: xxxz:0000 xz00:0001 xz00:0001
QTest::newRow("overlong-1-3") << QByteArray("\xE0\x81\x81");
// overlong 4: xxxx:z000 xz00:0000 xz00:0001 xz00:0001
QTest::newRow("overlong-1-4") << QByteArray("\xF0\x80\x81\x81");
// overlong 5: xxxx:xz00 xz00:0000 xz00:0000 xz00:0001 xz00:0001
QTest::newRow("overlong-1-5") << QByteArray("\xF8\x80\x80\x81\x81");
// overlong 6: xxxx:xxz0 xz00:0000 xz00:0000 xz00:0000 xz00:0001 xz00:0001
QTest::newRow("overlong-1-6") << QByteArray("\xFC\x80\x80\x80\x81\x81");
// NBSP: U+00A0: 10 00 0000
// proper encoding: xxz0:0010 xz00:0000
// overlong 3: xxxz:0000 xz00:0010 xz00:0000
QTest::newRow("overlong-2-3") << QByteArray("\xC0\x82\x80");
// overlong 4: xxxx:z000 xz00:0000 xz00:0010 xz00:0000
QTest::newRow("overlong-2-4") << QByteArray("\xF0\x80\x82\x80");
// overlong 5: xxxx:xz00 xz00:0000 xz00:0000 xz00:0010 xz00:0000
QTest::newRow("overlong-2-4") << QByteArray("\xF8\x80\x80\x82\x80");
// overlong 6: xxxx:xxz0 xz00:0000 xz00:0000 xz00:0000 xz00:0010 xz00:0000
QTest::newRow("overlong-2-4") << QByteArray("\xFC\x80\x80\x80\x82\x80");
// U+0800: 10 0000 00 0000
// proper encoding: xxxz:0000 xz10:0000 xz00:0000
// overlong 4: xxxx:z000 xz00:0000 xz10:0000 xz00:0000
QTest::newRow("overlong-3-4") << QByteArray("\xF0\x80\xA0\x80");
// overlong 5: xxxx:xz00 xz00:0000 xz00:0000 xz10:0000 xz00:0000
QTest::newRow("overlong-3-5") << QByteArray("\xF8\x80\x80\xA0\x80");
// overlong 6: xxxx:xxz0 xz00:0000 xz00:0000 xz00:0000 xz10:0000 xz00:0000
QTest::newRow("overlong-3-6") << QByteArray("\xFC\x80\x80\x80\xA0\x80");
// U+010000: 00 0100 00 0000 00 0000
// proper encoding: xxxx:z000 xz00:0100 xz00:0000 xz00:0000
// overlong 5: xxxx:xz00 xz00:0000 xz00:0100 xz00:0000 xz00:0000
QTest::newRow("overlong-4-5") << QByteArray("\xF8\x80\x84\x80\x80");
// overlong 6: xxxx:xxz0 xz00:0000 xz00:0000 xz00:0100 xz00:0000 xz00:0000
QTest::newRow("overlong-4-6") << QByteArray("\xFC\x80\x80\x84\x80\x80");
}
void tst_Utf8::invalidUtf8()
{
QFETCH(QByteArray, utf8);
QFETCH_GLOBAL(bool, useLocale);
QSharedPointer<QTextDecoder> decoder = QSharedPointer<QTextDecoder>(codec->makeDecoder());
decoder->toUnicode(utf8);
// Only enforce correctness on our UTF-8 decoder
// The system's UTF-8 codec is sometimes buggy
// GNU libc's iconv is known to accept U+FFFF and U+FFFE encoded as UTF-8
// OS X's iconv is known to accept those, plus surrogates and codepoints above U+10FFFF
if (!useLocale)
QVERIFY(decoder->hasFailure());
else if (!decoder->hasFailure())
qWarning("System codec does not report failure when it should. Should report bug upstream.");
}
void tst_Utf8::nonCharacters_data()
{
QTest::addColumn<QByteArray>("utf8");
QTest::addColumn<QString>("utf16");
// Unicode has a couple of "non-characters" that one can use internally,
// but are not allowed to be used for text interchange.
//
// Those are the last two entries each Unicode Plane (U+FFFE, U+FFFF,
// U+1FFFE, U+1FFFF, etc.) as well as the entries between U+FDD0 and
// U+FDEF (inclusive)
// U+FDD0 through U+FDEF
for (int i = 0; i < 16; ++i) {
char utf8[] = { 0357, 0267, 0220 + i, 0 };
QString utf16 = QChar(0xfdd0 + i);
QTest::newRow(qPrintable(QString::number(0xfdd0 + i, 16))) << QByteArray(utf8) << utf16;
}
// the last two in Planes 1 through 16
for (uint plane = 1; plane <= 16; ++plane) {
for (uint lower = 0xfffe; lower < 0x10000; ++lower) {
uint ucs4 = (plane << 16) | lower;
char utf8[] = { 0xf0 | uchar(ucs4 >> 18),
0x80 | (uchar(ucs4 >> 12) & 0x3f),
0x80 | (uchar(ucs4 >> 6) & 0x3f),
0x80 | (uchar(ucs4) & 0x3f),
0 };
ushort utf16[] = { QChar::highSurrogate(ucs4), QChar::lowSurrogate(ucs4), 0 };
QTest::newRow(qPrintable(QString::number(ucs4, 16))) << QByteArray(utf8) << QString::fromUtf16(utf16);
}
}
QTest::newRow("fffe") << QByteArray("\xEF\xBF\xBE") << QString(QChar(0xfffe));
QTest::newRow("ffff") << QByteArray("\xEF\xBF\xBF") << QString(QChar(0xffff));
}
void tst_Utf8::nonCharacters()
{
QFETCH(QByteArray, utf8);
QFETCH(QString, utf16);
QFETCH_GLOBAL(bool, useLocale);
QSharedPointer<QTextDecoder> decoder = QSharedPointer<QTextDecoder>(codec->makeDecoder());
decoder->toUnicode(utf8);
// Only enforce correctness on our UTF-8 decoder
// The system's UTF-8 codec is sometimes buggy
// GNU libc's iconv is known to accept U+FFFF and U+FFFE encoded as UTF-8
// OS X's iconv is known to accept those, plus surrogates and codepoints above U+10FFFF
if (!useLocale)
QVERIFY(decoder->hasFailure());
else if (!decoder->hasFailure())
qWarning("System codec does not report failure when it should. Should report bug upstream.");
QSharedPointer<QTextEncoder> encoder(codec->makeEncoder());
encoder->fromUnicode(utf16);
if (!useLocale)
QVERIFY(encoder->hasFailure());
else if (!encoder->hasFailure())
qWarning("System codec does not report failure when it should. Should report bug upstream.");
}
QTEST_MAIN(tst_Utf8)
#include "tst_utf8.moc"
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