--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qbuffer/tst_qbuffer.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,533 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 <QBuffer>
+#include <QByteArray>
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QBuffer : public QObject
+{
+ Q_OBJECT
+public:
+ tst_QBuffer();
+
+private slots:
+ void getSetCheck();
+ void readBlock();
+ void readBlockPastEnd();
+ void writeBlock_data();
+ void writeBlock();
+ void seek();
+ void seekTest_data();
+ void seekTest();
+ void read_rawdata();
+ void isSequential();
+ void signalTest_data();
+ void signalTest();
+ void isClosedAfterClose();
+ void readLine_data();
+ void readLine();
+ void canReadLine_data();
+ void canReadLine();
+ void atEnd();
+ void readLineBoundaries();
+ void writeAfterQByteArrayResize();
+
+protected slots:
+ void readyReadSlot();
+ void bytesWrittenSlot(qint64 written);
+
+private:
+ qint64 totalBytesWritten;
+ bool gotReadyRead;
+};
+
+// Testing get/set functions
+void tst_QBuffer::getSetCheck()
+{
+ QBuffer obj1;
+ // const QByteArray & QBuffer::data()
+ // void QBuffer::setData(const QByteArray &)
+ QByteArray var1("Bogus data");
+ obj1.setData(var1);
+ QCOMPARE(var1, obj1.data());
+ obj1.setData(QByteArray());
+ QCOMPARE(QByteArray(), obj1.data());
+}
+
+tst_QBuffer::tst_QBuffer()
+{
+}
+
+// some status() tests, too
+void tst_QBuffer::readBlock()
+{
+// QTest::ignoreMessage(QtWarningMsg, "QIODevice::read: File not open");
+// QTest::ignoreMessage(QtWarningMsg, "QIODevice::read: Read operation not permitted");
+
+ const int arraySize = 10;
+ char a[arraySize];
+ QBuffer b;
+ QCOMPARE(b.read(a, arraySize), (qint64) -1); // not opened
+ QVERIFY(b.atEnd());
+
+ QByteArray ba;
+ ba.resize(arraySize);
+ b.setBuffer(&ba);
+ b.open(QIODevice::WriteOnly);
+ QTest::ignoreMessage(QtWarningMsg, "QIODevice::read: WriteOnly device");
+ QCOMPARE(b.read(a, arraySize), (qint64) -1); // no read access
+ b.close();
+
+ b.open(QIODevice::ReadOnly);
+ QCOMPARE(b.read(a, arraySize), (qint64) arraySize);
+ QVERIFY(b.atEnd());
+
+ // up to 3.0.x reading beyond the end was an error while ok
+ // this has been made consistent with other QIODevice sub classes in 3.1
+ QCOMPARE(b.read(a, 1), qint64(0));
+ QVERIFY(b.atEnd());
+
+ // read in two chunks
+ b.close();
+ b.open(QIODevice::ReadOnly);
+ QCOMPARE(b.read(a, arraySize/2), (qint64) arraySize/2);
+ QCOMPARE(b.read(a + arraySize/2, arraySize - arraySize/2),
+ (qint64)(arraySize - arraySize/2));
+ QVERIFY(b.atEnd());
+}
+
+void tst_QBuffer::readBlockPastEnd()
+{
+ QByteArray arr(4096 + 3616, 'd');
+ QBuffer buf(&arr);
+
+ buf.open(QIODevice::ReadOnly);
+ char dummy[4096];
+
+ buf.read(1);
+
+ QCOMPARE(buf.read(dummy, 4096), qint64(4096));
+ QCOMPARE(buf.read(dummy, 4096), qint64(3615));
+ QVERIFY(buf.atEnd());
+}
+
+void tst_QBuffer::writeBlock_data()
+{
+ QTest::addColumn<QString>("str");
+
+ QTest::newRow( "small_bytearray" ) << QString("Test");
+ QTest::newRow( "large_bytearray" ) << QString("The QBuffer class is an I/O device that operates on a QByteArray.\n"
+ "QBuffer is used to read and write to a memory buffer. It is normally "
+ "used with a QTextStream or a QDataStream. QBuffer has an associated "
+ "QByteArray which holds the buffer data. The size() of the buffer is "
+ "automatically adjusted as data is written.\n"
+ "The constructor QBuffer(QByteArray) creates a QBuffer using an existing "
+ "byte array. The byte array can also be set with setBuffer(). Writing to "
+ "the QBuffer will modify the original byte array because QByteArray is "
+ "explicitly shared.\n"
+ "Use open() to open the buffer before use and to set the mode (read-only, "
+ "write-only, etc.). close() closes the buffer. The buffer must be closed "
+ "before reopening or calling setBuffer().\n"
+ "A common way to use QBuffer is through QDataStream or QTextStream, which "
+ "have constructors that take a QBuffer parameter. For convenience, there "
+ "are also QDataStream and QTextStream constructors that take a QByteArray "
+ "parameter. These constructors create and open an internal QBuffer.\n"
+ "Note that QTextStream can also operate on a QString (a Unicode string); a "
+ "QBuffer cannot.\n"
+ "You can also use QBuffer directly through the standard QIODevice functions "
+ "readBlock(), writeBlock() readLine(), at(), getch(), putch() and ungetch().\n"
+ "See also QFile, QDataStream, QTextStream, QByteArray, Shared Classes, Collection "
+ "Classes and Input/Output and Networking.\n\n"
+ "The QBuffer class is an I/O device that operates on a QByteArray.\n"
+ "QBuffer is used to read and write to a memory buffer. It is normally "
+ "used with a QTextStream or a QDataStream. QBuffer has an associated "
+ "QByteArray which holds the buffer data. The size() of the buffer is "
+ "automatically adjusted as data is written.\n"
+ "The constructor QBuffer(QByteArray) creates a QBuffer using an existing "
+ "byte array. The byte array can also be set with setBuffer(). Writing to "
+ "the QBuffer will modify the original byte array because QByteArray is "
+ "explicitly shared.\n"
+ "Use open() to open the buffer before use and to set the mode (read-only, "
+ "write-only, etc.). close() closes the buffer. The buffer must be closed "
+ "before reopening or calling setBuffer().\n"
+ "A common way to use QBuffer is through QDataStream or QTextStream, which "
+ "have constructors that take a QBuffer parameter. For convenience, there "
+ "are also QDataStream and QTextStream constructors that take a QByteArray "
+ "parameter. These constructors create and open an internal QBuffer.\n"
+ "Note that QTextStream can also operate on a QString (a Unicode string); a "
+ "QBuffer cannot.\n"
+ "You can also use QBuffer directly through the standard QIODevice functions "
+ "readBlock(), writeBlock() readLine(), at(), getch(), putch() and ungetch().\n"
+ "See also QFile, QDataStream, QTextStream, QByteArray, Shared Classes, Collection "
+ "Classes and Input/Output and Networking.\n\n"
+ "The QBuffer class is an I/O device that operates on a QByteArray.\n"
+ "QBuffer is used to read and write to a memory buffer. It is normally "
+ "used with a QTextStream or a QDataStream. QBuffer has an associated "
+ "QByteArray which holds the buffer data. The size() of the buffer is "
+ "automatically adjusted as data is written.\n"
+ "The constructor QBuffer(QByteArray) creates a QBuffer using an existing "
+ "byte array. The byte array can also be set with setBuffer(). Writing to "
+ "the QBuffer will modify the original byte array because QByteArray is "
+ "explicitly shared.\n"
+ "Use open() to open the buffer before use and to set the mode (read-only, "
+ "write-only, etc.). close() closes the buffer. The buffer must be closed "
+ "before reopening or calling setBuffer().\n"
+ "A common way to use QBuffer is through QDataStream or QTextStream, which "
+ "have constructors that take a QBuffer parameter. For convenience, there "
+ "are also QDataStream and QTextStream constructors that take a QByteArray "
+ "parameter. These constructors create and open an internal QBuffer.\n"
+ "Note that QTextStream can also operate on a QString (a Unicode string); a "
+ "QBuffer cannot.\n"
+ "You can also use QBuffer directly through the standard QIODevice functions "
+ "readBlock(), writeBlock() readLine(), at(), getch(), putch() and ungetch().\n"
+ "See also QFile, QDataStream, QTextStream, QByteArray, Shared Classes, Collection "
+ "Classes and Input/Output and Networking.");
+}
+
+void tst_QBuffer::writeBlock()
+{
+ QFETCH( QString, str );
+
+ QByteArray ba;
+ QBuffer buf( &ba );
+ buf.open(QIODevice::ReadWrite);
+ QByteArray data = str.toLatin1();
+ QCOMPARE(buf.write( data.constData(), data.size() ), qint64(data.size()));
+
+ QCOMPARE(buf.data(), str.toLatin1());
+}
+
+void tst_QBuffer::seek()
+{
+ QBuffer buffer;
+ buffer.open(QIODevice::WriteOnly);
+ QCOMPARE(buffer.size(), qint64(0));
+ QCOMPARE(buffer.pos(), qint64(0));
+ const qint64 pos = 10;
+ QVERIFY(buffer.seek(pos));
+ QCOMPARE(buffer.size(), pos);
+}
+
+void tst_QBuffer::seekTest_data()
+{
+ writeBlock_data();
+}
+
+#define DO_VALID_SEEK(position) { \
+ char c; \
+ QVERIFY(buf.seek(qint64(position))); \
+ QCOMPARE(buf.pos(), qint64(position)); \
+ QVERIFY(buf.getChar(&c)); \
+ QCOMPARE(QChar(c), str.at(qint64(position))); \
+}
+#define DO_INVALID_SEEK(position) { \
+ qint64 prev_pos = buf.pos(); \
+ QVERIFY(!buf.seek(qint64(position))); \
+ QCOMPARE(buf.pos(), prev_pos); /* position should not be changed */ \
+}
+
+void tst_QBuffer::seekTest()
+{
+ QFETCH(QString, str);
+
+ QByteArray ba;
+ QBuffer buf(&ba);
+#if 0
+ QCOMPARE(buf.pos(), qint64(-1));
+#endif
+ buf.open(QIODevice::ReadWrite);
+ QCOMPARE(buf.pos(), qint64(0));
+
+ QByteArray data = str.toLatin1();
+ QCOMPARE(buf.write( data.constData(), data.size() ), qint64(data.size()));
+
+ QTest::ignoreMessage(QtWarningMsg, "QBuffer::seek: Invalid pos: -1");
+ DO_INVALID_SEEK(-1);
+
+ DO_VALID_SEEK(0);
+ DO_VALID_SEEK(str.size() - 1);
+ QVERIFY(buf.atEnd());
+ DO_VALID_SEEK(str.size() / 2);
+
+ // Special case: valid to seek one position past the buffer.
+ // Its then legal to write, but not read.
+ {
+ char c = 'a';
+ QVERIFY(buf.seek(qint64(str.size())));
+ QCOMPARE(buf.read(&c, qint64(1)), qint64(0));
+ QCOMPARE(c, 'a');
+ QCOMPARE(buf.write(&c, qint64(1)), qint64(1));
+ }
+
+ // Special case 2: seeking to an arbitrary position beyond the buffer auto-expands it
+ // (see Task 184730)
+ {
+ char c;
+ const int offset = 1;
+ Q_ASSERT(offset > 0); // any positive integer will do
+ const qint64 pos = buf.size() + offset;
+ QVERIFY(buf.seek(pos));
+ QCOMPARE(buf.pos(), pos);
+ QVERIFY(!buf.getChar(&c));
+ QVERIFY(buf.seek(pos - 1));
+ QVERIFY(buf.getChar(&c));
+ QCOMPARE(c, buf.data().at(pos - 1));
+ QVERIFY(buf.seek(pos));
+ QVERIFY(buf.putChar(c));
+ }
+}
+
+void tst_QBuffer::read_rawdata()
+{
+ static const unsigned char mydata[] = {
+ 0x01, 0x00, 0x03, 0x84, 0x78, 0x9c, 0x3b, 0x76,
+ 0xec, 0x18, 0xc3, 0x31, 0x0a, 0xf1, 0xcc, 0x99,
+ 0x6d, 0x5b
+ };
+
+ QByteArray data = QByteArray::fromRawData((const char *)mydata, sizeof(mydata));
+ QBuffer buffer(&data);
+ buffer.open(QIODevice::ReadOnly);
+ QDataStream in(&buffer);
+ quint8 ch;
+ for (int i = 0; i < (int)sizeof(mydata); ++i) {
+ QVERIFY(!buffer.atEnd());
+ in >> ch;
+ QVERIFY(ch == (quint8)mydata[i]);
+ }
+ QVERIFY(buffer.atEnd());
+}
+
+void tst_QBuffer::isSequential()
+{
+ QBuffer buf;
+ QVERIFY(!buf.isSequential());
+}
+
+void tst_QBuffer::signalTest_data()
+{
+ QTest::addColumn<QByteArray>("sample");
+
+ QTest::newRow("empty") << QByteArray();
+ QTest::newRow("size 1") << QByteArray("1");
+ QTest::newRow("size 2") << QByteArray("11");
+ QTest::newRow("size 100") << QByteArray(100, '1');
+}
+
+void tst_QBuffer::signalTest()
+{
+ QFETCH(QByteArray, sample);
+
+ totalBytesWritten = 0;
+
+ QBuffer buf;
+ buf.open(QIODevice::WriteOnly);
+
+ buf.buffer().resize(sample.size() * 10);
+ connect(&buf, SIGNAL(readyRead()), this, SLOT(readyReadSlot()));
+ connect(&buf, SIGNAL(bytesWritten(qint64)), this, SLOT(bytesWrittenSlot(qint64)));
+
+ for (int i = 0; i < 10; ++i) {
+ gotReadyRead = false;
+ QCOMPARE(buf.write(sample), qint64(sample.size()));
+ if (sample.size() > 0) {
+ QTestEventLoop::instance().enterLoop(5);
+ if (QTestEventLoop::instance().timeout())
+ QFAIL("Timed out when waiting for readyRead()");
+ QCOMPARE(totalBytesWritten, qint64(sample.size() * (i + 1)));
+ QVERIFY(gotReadyRead);
+ } else {
+ QCOMPARE(totalBytesWritten, qint64(0));
+ QVERIFY(!gotReadyRead);
+ }
+ }
+}
+
+void tst_QBuffer::readyReadSlot()
+{
+ gotReadyRead = true;
+ QTestEventLoop::instance().exitLoop();
+}
+
+void tst_QBuffer::bytesWrittenSlot(qint64 written)
+{
+ totalBytesWritten += written;
+}
+
+void tst_QBuffer::isClosedAfterClose()
+{
+ QBuffer buffer;
+ buffer.open(QBuffer::ReadOnly);
+ QVERIFY(buffer.isOpen());
+ buffer.close();
+ QVERIFY(!buffer.isOpen());
+}
+
+void tst_QBuffer::readLine_data()
+{
+ QTest::addColumn<QByteArray>("src");
+ QTest::addColumn<int>("maxlen");
+ QTest::addColumn<QByteArray>("expected");
+
+ QTest::newRow("1") << QByteArray("line1\nline2\n") << 1024
+ << QByteArray("line1\n");
+ QTest::newRow("2") << QByteArray("hi there") << 1024
+ << QByteArray("hi there");
+ QTest::newRow("3") << QByteArray("l\n") << 3 << QByteArray("l\n");
+ QTest::newRow("4") << QByteArray("l\n") << 2 << QByteArray("l");
+}
+
+void tst_QBuffer::readLine()
+{
+ QFETCH(QByteArray, src);
+ QFETCH(int, maxlen);
+ QFETCH(QByteArray, expected);
+
+ QBuffer buf;
+ buf.setBuffer(&src);
+ char *result = new char[maxlen + 1];
+ result[maxlen] = '\0';
+
+ QVERIFY(buf.open(QIODevice::ReadOnly));
+
+ qint64 bytes_read = buf.readLine(result, maxlen);
+
+ QCOMPARE(bytes_read, qint64(expected.size()));
+ QCOMPARE(QByteArray(result), expected);
+
+ buf.close();
+ delete[] result;
+
+}
+
+void tst_QBuffer::canReadLine_data()
+{
+ QTest::addColumn<QByteArray>("src");
+ QTest::addColumn<bool>("expected");
+
+ QTest::newRow("1") << QByteArray("no newline") << false;
+ QTest::newRow("2") << QByteArray("two \n lines\n") << true;
+ QTest::newRow("3") << QByteArray("\n") << true;
+ QTest::newRow("4") << QByteArray() << false;
+}
+
+void tst_QBuffer::canReadLine()
+{
+ QFETCH(QByteArray, src);
+ QFETCH(bool, expected);
+
+ QBuffer buf;
+ buf.setBuffer(&src);
+ QVERIFY(!buf.canReadLine());
+ QVERIFY(buf.open(QIODevice::ReadOnly));
+ QCOMPARE(buf.canReadLine(), expected);
+}
+
+void tst_QBuffer::atEnd()
+{
+ QBuffer buffer;
+ buffer.open(QBuffer::Append);
+ buffer.write("heisann");
+ buffer.close();
+
+ buffer.open(QBuffer::ReadOnly);
+ buffer.seek(buffer.size());
+ char c;
+ QVERIFY(!buffer.getChar(&c));
+ QCOMPARE(buffer.read(&c, 1), qint64(0));
+}
+
+void tst_QBuffer::readLineBoundaries()
+{
+ QByteArray line = "This is a line\n";
+ QBuffer buffer;
+ buffer.open(QIODevice::ReadWrite);
+ while (buffer.size() < 16384)
+ buffer.write(line);
+
+/*
+ buffer.seek(0);
+ QFile out1("out1.txt");
+ out1.open(QFile::WriteOnly);
+ out1.write(buffer.readAll());
+ out1.close();
+*/
+ buffer.seek(0);
+
+ char c;
+ buffer.getChar(&c);
+ buffer.ungetChar(c);
+
+ QFile out2("out2.txt");
+ out2.open(QFile::WriteOnly);
+ while (!buffer.atEnd())
+ out2.write(buffer.readLine());
+
+ out2.close();
+ out2.remove();
+}
+
+void tst_QBuffer::writeAfterQByteArrayResize()
+{
+ QBuffer buffer;
+ QVERIFY(buffer.open(QIODevice::WriteOnly));
+
+ buffer.write(QByteArray().fill('a', 1000));
+ QCOMPARE(buffer.buffer().size(), 1000);
+
+ // resize the QByteArray behind QBuffer's back
+ buffer.buffer().clear();
+ buffer.seek(0);
+ QCOMPARE(buffer.buffer().size(), 0);
+
+ buffer.write(QByteArray().fill('b', 1000));
+ QCOMPARE(buffer.buffer().size(), 1000);
+}
+
+QTEST_MAIN(tst_QBuffer)
+#include "tst_qbuffer.moc"