//-------------------------------------------------------------------- void tst_QIODevice::unget() { #if defined(Q_OS_WINCE) && defined(WINCE_EMULATOR_TEST) QSKIP("Networking tests in a WinCE emulator are unstable", SkipAll); #endif QBuffer buffer; buffer.open(QBuffer::ReadWrite); buffer.write("ZXCV"); buffer.seek(0); QCOMPARE(buffer.read(4), QByteArray("ZXCV")); QCOMPARE(buffer.pos(), qint64(4)); buffer.ungetChar('a'); buffer.ungetChar('b'); buffer.ungetChar('c'); buffer.ungetChar('d'); QCOMPARE(buffer.pos(), qint64(0)); char buf[6]; QCOMPARE(buffer.readLine(buf, 5), qint64(4)); QCOMPARE(buffer.pos(), qint64(4)); QCOMPARE(static_cast<const char*>(buf), "dcba"); buffer.ungetChar('a'); buffer.ungetChar('b'); buffer.ungetChar('c'); buffer.ungetChar('d'); QCOMPARE(buffer.pos(), qint64(0)); for (int i = 0; i < 5; ++i) { buf[0] = '@'; buf[1] = '@'; QTest::ignoreMessage(QtWarningMsg, "QIODevice::readLine: Called with maxSize < 2"); QCOMPARE(buffer.readLine(buf, 1), qint64(-1)); QCOMPARE(buffer.readLine(buf, 2), qint64(i < 4 ? 1 : -1)); switch (i) { case 0: QCOMPARE(buf[0], 'd'); break; case 1: QCOMPARE(buf[0], 'c'); break; case 2: QCOMPARE(buf[0], 'b'); break; case 3: QCOMPARE(buf[0], 'a'); break; case 4: QCOMPARE(buf[0], '\0'); break; } QCOMPARE(buf[1], i < 4 ? '\0' : '@'); } buffer.ungetChar('\n'); QCOMPARE(buffer.readLine(), QByteArray("\n")); buffer.seek(1); buffer.readLine(buf, 3); QCOMPARE(static_cast<const char*>(buf), "XC"); buffer.seek(4); buffer.ungetChar('Q'); QCOMPARE(buffer.readLine(buf, 3), qint64(1)); for (int i = 0; i < 2; ++i) { QTcpSocket socket; QIODevice *dev; QByteArray result; const char *lineResult; if (i == 0) { dev = &buffer; result = QByteArray("ZXCV"); lineResult = "ZXCV"; } else { socket.connectToHost(QtNetworkSettings::serverName(), 80); socket.write("GET / HTTP/1.0\r\n\r\n"); QVERIFY(socket.waitForReadyRead()); dev = &socket; result = QByteArray("HTTP"); lineResult = "Date"; } char ch, ch2; dev->seek(0); dev->getChar(&ch); dev->ungetChar(ch); QCOMPARE(dev->peek(4), result); dev->getChar(&ch); dev->getChar(&ch2); dev->ungetChar(ch2); dev->ungetChar(ch); QCOMPARE(dev->read(1), result.left(1)); QCOMPARE(dev->read(3), result.right(3)); if (i == 0) dev->seek(0); else dev->readLine(); dev->getChar(&ch); dev->ungetChar(ch); dev->readLine(buf, 5); QCOMPARE(static_cast<const char*>(buf), lineResult); if (i == 1) socket.close(); } }