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diff --git a/tests/auto/corelib/serialization/qcborstreamwriter/tst_qcborstreamwriter.cpp b/tests/auto/corelib/serialization/qcborstreamwriter/tst_qcborstreamwriter.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2018 Intel Corporation.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest>
+
+class tst_QCborStreamWriter : public QObject
+{
+ Q_OBJECT
+
+private Q_SLOTS:
+ void initTestCase_data();
+ void fixed_data();
+ void fixed();
+ void strings_data();
+ void strings() { fixed(); }
+ void nonAsciiStrings_data();
+ void nonAsciiStrings();
+ void arraysAndMaps_data();
+ void arraysAndMaps() { fixed(); }
+ void tags_data();
+ void tags();
+ void arrays_data() { tags_data(); }
+ void arrays();
+ void maps_data() { tags_data(); }
+ void maps();
+};
+
+// Get the data from TinyCBOR (see src/3rdparty/tinycbor/tests/encoder/data.cpp)
+typedef quint64 CborTag;
+#include "data.cpp"
+
+void encodeVariant(QCborStreamWriter &writer, const QVariant &v)
+{
+ int type = v.userType();
+ switch (type) {
+ case QVariant::Int:
+ case QVariant::LongLong:
+ return writer.append(v.toLongLong());
+
+ case QVariant::UInt:
+ case QVariant::ULongLong:
+ return writer.append(v.toULongLong());
+
+ case QVariant::Bool:
+ return writer.append(v.toBool());
+
+ case QVariant::Invalid:
+ return writer.appendUndefined();
+
+ case QMetaType::VoidStar:
+ return writer.append(nullptr);
+
+ case QVariant::Double:
+ return writer.append(v.toDouble());
+
+ case QMetaType::Float:
+ return writer.append(v.toFloat());
+
+ case QVariant::String:
+ return writer.append(v.toString());
+
+ case QVariant::ByteArray:
+ return writer.append(v.toByteArray());
+
+ default:
+ if (type == qMetaTypeId<NegativeInteger>())
+ return writer.append(QCborNegativeInteger(v.value<NegativeInteger>().abs));
+ if (type == qMetaTypeId<SimpleType>())
+ return writer.append(QCborSimpleType(v.value<SimpleType>().type));
+ if (type == qMetaTypeId<qfloat16>())
+ return writer.append(v.value<qfloat16>());
+ if (type == qMetaTypeId<Tag>()) {
+ writer.append(QCborTag(v.value<Tag>().tag));
+ return encodeVariant(writer, v.value<Tag>().tagged);
+ }
+ if (type == QVariant::List || type == qMetaTypeId<IndeterminateLengthArray>()) {
+ QVariantList list = v.toList();
+ if (type == qMetaTypeId<IndeterminateLengthArray>()) {
+ list = v.value<IndeterminateLengthArray>();
+ writer.startArray();
+ } else {
+ writer.startArray(list.length());
+ }
+ for (const QVariant &v2 : qAsConst(list))
+ encodeVariant(writer, v2);
+ QVERIFY(writer.endArray());
+ return;
+ }
+ if (type == qMetaTypeId<Map>() || type == qMetaTypeId<IndeterminateLengthMap>()) {
+ Map map = v.value<Map>();
+ if (type == qMetaTypeId<IndeterminateLengthMap>()) {
+ map = v.value<IndeterminateLengthMap>();
+ writer.startMap();
+ } else {
+ writer.startMap(map.length());
+ }
+ for (auto pair : qAsConst(map)) {
+ encodeVariant(writer, pair.first);
+ encodeVariant(writer, pair.second);
+ }
+ QVERIFY(writer.endMap());
+ return;
+ }
+ }
+ QFAIL("Shouldn't have got here");
+}
+
+void compare(const QVariant &input, const QByteArray &output)
+{
+ QFETCH_GLOBAL(bool, useDevice);
+
+ if (useDevice) {
+ QBuffer buffer;
+ buffer.open(QIODevice::WriteOnly);
+ QCborStreamWriter writer(&buffer);
+ encodeVariant(writer, input);
+ QCOMPARE(buffer.data(), output);
+ } else {
+ QByteArray buffer;
+ QCborStreamWriter writer(&buffer);
+ encodeVariant(writer, input);
+ QCOMPARE(buffer, output);
+ }
+}
+
+void tst_QCborStreamWriter::initTestCase_data()
+{
+ QTest::addColumn<bool>("useDevice");
+ QTest::newRow("QByteArray") << false;
+ QTest::newRow("QIODevice") << true;
+}
+
+void tst_QCborStreamWriter::fixed_data()
+{
+ addColumns();
+ addFixedData();
+}
+
+void tst_QCborStreamWriter::fixed()
+{
+ QFETCH(QVariant, input);
+ QFETCH(QByteArray, output);
+ compare(input, output);
+}
+
+void tst_QCborStreamWriter::strings_data()
+{
+ addColumns();
+ addStringsData();
+}
+
+void tst_QCborStreamWriter::nonAsciiStrings_data()
+{
+ QTest::addColumn<QByteArray>("output");
+ QTest::addColumn<QString>("input");
+ QTest::addColumn<bool>("isLatin1");
+
+ QByteArray latin1 = u8"Résumé";
+ QTest::newRow("shortlatin1")
+ << ("\x68" + latin1) << QString::fromUtf8(latin1) << true;
+
+ // replicate it 5 times (total 40 bytes)
+ latin1 += latin1 + latin1 + latin1 + latin1;
+ QTest::newRow("longlatin1")
+ << ("\x78\x28" + latin1) << QString::fromUtf8(latin1) << true;
+
+ QByteArray nonlatin1 = u8"Χαίρετε";
+ QTest::newRow("shortnonlatin1")
+ << ("\x6e" + nonlatin1) << QString::fromUtf8(nonlatin1) << false;
+
+ // replicate it 4 times (total 56 bytes)
+ nonlatin1 = nonlatin1 + nonlatin1 + nonlatin1 + nonlatin1;
+ QTest::newRow("longnonlatin1")
+ << ("\x78\x38" + nonlatin1) << QString::fromUtf8(nonlatin1) << false;
+}
+
+void tst_QCborStreamWriter::nonAsciiStrings()
+{
+ QFETCH(QByteArray, output);
+ QFETCH(QString, input);
+ QFETCH(bool, isLatin1);
+ QFETCH_GLOBAL(bool, useDevice);
+
+ // will be wrong if !isLatin1
+ QByteArray latin1 = input.toLatin1();
+
+ if (useDevice) {
+ {
+ QBuffer buffer;
+ buffer.open(QIODevice::WriteOnly);
+ QCborStreamWriter writer(&buffer);
+ writer.append(input);
+ QCOMPARE(buffer.data(), output);
+ }
+
+ if (isLatin1) {
+ QBuffer buffer;
+ buffer.open(QIODevice::WriteOnly);
+ QCborStreamWriter writer(&buffer);
+ writer.append(QLatin1String(latin1.constData(), latin1.size()));
+ QCOMPARE(buffer.data(), output);
+ }
+ } else {
+ {
+ QByteArray buffer;
+ QCborStreamWriter writer(&buffer);
+ encodeVariant(writer, input);
+ QCOMPARE(buffer, output);
+ }
+
+ if (isLatin1) {
+ QByteArray buffer;
+ QCborStreamWriter writer(&buffer);
+ writer.append(QLatin1String(latin1.constData(), latin1.size()));
+ QCOMPARE(buffer, output);
+ }
+ }
+}
+
+void tst_QCborStreamWriter::arraysAndMaps_data()
+{
+ addColumns();
+ addArraysAndMaps();
+}
+
+void tst_QCborStreamWriter::tags_data()
+{
+ addColumns();
+ addFixedData();
+ addStringsData();
+ addArraysAndMaps();
+}
+
+void tst_QCborStreamWriter::tags()
+{
+ QFETCH(QVariant, input);
+ QFETCH(QByteArray, output);
+
+ compare(QVariant::fromValue(Tag{1, input}), "\xc1" + output);
+}
+
+void tst_QCborStreamWriter::arrays()
+{
+ QFETCH(QVariant, input);
+ QFETCH(QByteArray, output);
+
+ compare(make_list(input), "\x81" + output);
+ if (QTest::currentTestFailed())
+ return;
+
+ compare(make_list(input, input), "\x82" + output + output);
+ if (QTest::currentTestFailed())
+ return;
+
+ // nested lists
+ compare(make_list(make_list(input)), "\x81\x81" + output);
+ if (QTest::currentTestFailed())
+ return;
+
+ compare(make_list(make_list(input), make_list(input)), "\x82\x81" + output + "\x81" + output);
+}
+
+void tst_QCborStreamWriter::maps()
+{
+ QFETCH(QVariant, input);
+ QFETCH(QByteArray, output);
+
+ compare(make_map({{1, input}}), "\xa1\1" + output);
+ if (QTest::currentTestFailed())
+ return;
+
+ compare(make_map({{1, input}, {input, 24}}), "\xa2\1" + output + output + "\x18\x18");
+}
+
+QTEST_MAIN(tst_QCborStreamWriter)
+
+#include "tst_qcborstreamwriter.moc"