/**************************************************************************** ** ** Copyright (C) 2021 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtTest 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 #include #include #include #include #include #include #include #ifndef Q_OS_WIN #include #endif #ifdef Q_OS_ANDROID #include #endif QT_BEGIN_NAMESPACE /*! \internal \class QAbstractTestLogger \inmodule QtTest \brief Base class for test loggers Implementations of logging for QtTest should implement all pure virtual methods of this class and may implement the other virtual methods. This class's documentation of each virtual method sets out how those implementations are invoked by the QtTest code and offers guidance on how the logging class should use the data. Actual implementations may have different requirements - such as a file format with a defined schema, or a target audience to serve - that affect how it interprets that guidance. */ /*! \enum QAbstractTestLogger::IncidentTypes \value Pass The test ran to completion successfully. \value XFail The test failed a check that is known to fail; this failure does not prevent successful completion of the test and may be followed by further checks. \value Fail The test fails. \value XPass A check which was expected to fail actually passed. This is counted as a failure, as it means whatever caused the known failure no longer does, so the test needs an update. \value Skip The current test ended prematurely, skipping some checks. \value BlacklistedPass As Pass but the test was blacklisted. \value BlacklistedXFail As XFail but the test was blacklisted. \value BlacklistedFail As Fail but the test was blacklisted. \value BlacklistedXPass As XPass but the test was blacklisted. A test may also skip (see \l {QAbstractTestLogger::}{MessageTypes}). The first of skip, Fail, XPass or the blacklisted equivalents of the last two to arise is decisive for the outcome of the test: loggers which should only report one outcome should thus record that as the outcome and either ignore later incidents (or skips) in the same run of the test function or map them to some form of message. \note tests can be "blacklisted" when they are known to fail unreliably. When testing is used to decide whether a change to the code under test is acceptable, such failures are not automatic grounds for rejecting the change, if the unreliable failure was known before the change. QTest::qExec(), as a result, only returns a failing status code if some non-blacklisted test failed. Logging backends may reasonably report a blacklisted result just as they would report the non-blacklisted equivalent, optionally with some annotation to indicate that the result should not be taken as damning evidence against recent changes to the code under test. \sa QAbstractTestLogger::addIncident() */ /*! \enum QAbstractTestLogger::MessageTypes The members whose names begin with \c Q describe messages that originate in calls, by the test or code under test, to Qt logging functions (implemented as macros) whose names are similar, with a \c q in place of the leading \c Q. The other members describe messages generated internally by QtTest. \value QInfo An informational message from qInfo(). \value QWarning A warning from qWarning(). \value QDebug A debug message from qDebug(). \value QCritical A critical error from qCritical(). \value QFatal A fatal error from qFatal(), or an unrecognised message from the Qt logging functions. \value Info Messages QtTest generates as requested by the \c{-v1} or \c{-v2} command-line option being specified when running the test. \value Warn A warning generated internally by QtTest \note For these purposes, some utilities provided by QtTestlib as helper functions to facilitate testing - such as \l QSignalSpy, \l QTestAccessibility, \l QTest::qExtractTestData(), and the facilities to deliver artificial mouse and keyboard events - are treated as test code, rather than internal to QtTest; they call \l qWarning() and friends rather than using the internal logging infrastructure, so that \l QTest::ignoreMessage() can be used to anticipate the messages. \sa QAbstractTestLogger::addMessage() */ /*! Constructs the base-class parts of the logger. Derived classes should pass this base-constructor the \a filename of the file to which they shall log test results, or \nullptr to write to standard output. The protected member \c stream is set to the open file descriptor. */ QAbstractTestLogger::QAbstractTestLogger(const char *filename) { if (!filename) { stream = stdout; return; } #if defined(_MSC_VER) if (::fopen_s(&stream, filename, "wt")) { #else stream = ::fopen(filename, "wt"); if (!stream) { #endif fprintf(stderr, "Unable to open file for logging: %s\n", filename); ::exit(1); } #ifdef Q_OS_ANDROID else { // Make sure output is world-readable on Android ::chmod(filename, 0666); } #endif } /*! Destroys the logger object. If the protected \c stream is not standard output, it is closed. In any case it is cleared. */ QAbstractTestLogger::~QAbstractTestLogger() { QTEST_ASSERT(stream); if (stream != stdout) fclose(stream); stream = nullptr; } /*! Returns true if the \c output stream is standard output. */ bool QAbstractTestLogger::isLoggingToStdout() const { return stream == stdout; } /*! Helper utility to blot out unprintable characters in \a str. Takes a \c{'\0'}-terminated mutable string and changes any characters of it that are not suitable for printing to \c{'?'} characters. */ void QAbstractTestLogger::filterUnprintable(char *str) const { unsigned char *idx = reinterpret_cast(str); while (*idx) { if (((*idx < 0x20 && *idx != '\n' && *idx != '\t') || *idx == 0x7f)) *idx = '?'; ++idx; } } /*! Convenience method to write \a msg to the output stream. The output \a msg must be a \c{'\0'}-terminated string (and not \nullptr). A copy of it is passed to \l filterUnprintable() and the result written to the output \c stream, which is then flushed. */ void QAbstractTestLogger::outputString(const char *msg) { QTEST_ASSERT(stream); QTEST_ASSERT(msg); char *filtered = new char[strlen(msg) + 1]; strcpy(filtered, msg); filterUnprintable(filtered); ::fputs(filtered, stream); ::fflush(stream); delete [] filtered; } /*! Called before the start of a test run. This virtual method is called before the first tests are run. A logging implementation might open a file, write some preamble, or prepare in other ways, such as setting up initial values of variables. It can use the usual Qt logging infrastucture, since it is also called before QtTest installs its own custom message handler. \sa stopLogging() */ void QAbstractTestLogger::startLogging() { } /*! Called after the end of a test run. This virtual method is called after all tests have run. A logging implementation might collate information gathered from the run, write a summary, or close a file. It can use the usual Qt logging infrastucture, since it is also called after QtTest has restored the default message handler it replaced with its own custom message handler. \sa startLogging() */ void QAbstractTestLogger::stopLogging() { } /*! \fn void QAbstractTestLogger::enterTestFunction(const char *function) This virtual method is called before each test function is invoked. It is passed the name of the test function (without its class prefix) as \a function. It is likewise called for \c{initTestCase()} at the start of testing, after \l startLogging(), and for \c{cleanupTestCase()} at the end of testing, in each case passing the name of the function. It is also called with \nullptr as \a function after the last of these functions, or in the event of an early end to testing, before \l stopLogging(). For data-driven test functions, this is called only once, before the data function is called to set up the table of datasets and the test is run with its first dataset. Every logging implementation must implement this method. It shall typically need to record the name of the function for later use in log messages. \sa leaveTestFunction(), enterTestData() */ /*! \fn void QAbstractTestLogger::leaveTestFunction() This virtual method is called after a test function has completed, to match \l enterTestFunction(). For data-driven test functions, this is called only once, after the test is run with its last dataset. Every logging implementation must implement this method. In some cases it may be called more than once without an intervening call to \l enterTestFunction(). In such cases, the implementation should ignore these later calls, until the next call to enterTestFunction(). \sa enterTestFunction(), enterTestData() */ /*! \fn void QAbstractTestLogger::enterTestData(QTestData *) This virtual method is called before and after each call to a test function. For a data-driven test, the call before is passed the name of the test data row. This may combine a global data row name with a local data row name. For non-data-driven tests and for the call after a test function, \nullptr is passed A logging implementation might chose to record the data row name for reporting of results from the test for that data row. It should, in such a case, clear its record of the name when called with \nullptr. \sa enterTestFunction(), leaveTestFunction() */ /*! \fn void QAbstractTestLogger::addIncident(IncidentTypes type, const char *description, const char *file, int line) This virtual method is called when an event occurs that relates to the resolution of the test. The \a type indicates whether this was a pass, a fail or a skip, whether a failure was expected, and whether the test being run is blacklisted. The \a description may be empty (for a pass) or a message describing the nature of the incident. Where the location in code of the incident is known, it is indicated by \a file and \a line; otherwise, these are \a nullptr and 0, respectively. Every logging implementation must implement this method. Note that there are circumstances where more than one incident may be reported, in this way, for a single run of a test on a single dataset. It is the implementation's responsibility to recognize such cases and decide what to do about them. For purposes of counting resolutions of tests in the "Totals" report at the end of a test run, QtTest considers the first incident (excluding XFail and its blacklisted variant) decisive. \sa addMessage(), addBenchmarkResult() */ /*! \fn void QAbstractTestLogger::addBenchmarkResult(const QBenchmarkResult &result) This virtual method is called after a benchmark has been run enough times to produce usable data. It is passed the median \a result from all cycles of the code controlled by the test's QBENCHMARK loop. Every logging implementation must implement this method. \sa addIncident(), addMessage() */ /*! \overload \fn void QAbstractTestLogger::addMessage(MessageTypes type, const QString &message, const char *file, int line) This virtual method is called, via its \c QtMsgType overload, from the custom message handler QtTest installs. It is also used to warn about various situations detected by QtTest itself, such as \e failure to see a message anticipated by QTest::ignoreMessage() and, particularly when verbosity options have been enabled via the command-line, to log some extra information. Every logging implementation must implement this method. The \a type indicates the category of message and the \a message is the content to be reported. When the message is associated with specific code, the name of the \a file and \a line number within it are also supplied; otherwise, these are \nullptr and 0, respectively. \sa QTest::ignoreMessage(), addIncident() */ /*! \overload This virtual method is called from the custom message handler QtTest installs in place of Qt's default message handler for the duration of testing, unless QTest::ignoreMessage() was used to ignore it, or too many messages have previously been processed. (The limiting number of messages is controlled by the -maxwarnings option to a test and defaults to 2002.) Logging implementations should not normally need to override this method. The base implementation converts \a type to the matching \l MessageType, formats the given \a message suitably for the specified \a context, and forwards the converted type and formatted message to the overload that takes MessageType and QString. \sa QTest::ignoreMessage(), addIncident() */ void QAbstractTestLogger::addMessage(QtMsgType type, const QMessageLogContext &context, const QString &message) { QAbstractTestLogger::MessageTypes messageType = [=]() { switch (type) { case QtDebugMsg: return QAbstractTestLogger::QDebug; case QtInfoMsg: return QAbstractTestLogger::QInfo; case QtCriticalMsg: return QAbstractTestLogger::QCritical; case QtWarningMsg: return QAbstractTestLogger::QWarning; case QtFatalMsg: return QAbstractTestLogger::QFatal; } Q_UNREACHABLE(); return QAbstractTestLogger::QFatal; }(); QString formattedMessage = qFormatLogMessage(type, context, message); // Note that we explicitly ignore the file and line of the context here, // as that's what QTest::messageHandler used to do when calling the same // overload directly. addMessage(messageType, formattedMessage); } namespace QTest { /*! \fn int QTest::qt_asprintf(QTestCharBuffer *buf, const char *format, ...); \internal */ int qt_asprintf(QTestCharBuffer *str, const char *format, ...) { constexpr int MAXSIZE = 1024 * 1024 * 2; Q_ASSERT(str); int size = str->size(); Q_ASSERT(size > 0); va_list ap; int res = 0; do { va_start(ap, format); res = qvsnprintf(str->data(), size, format, ap); va_end(ap); // vsnprintf() reliably '\0'-terminates Q_ASSERT(res < 0 || str->data()[res < size ? res : size - 1] == '\0'); // Note, we're assuming that a result of -1 is always due to running out of space. if (res >= 0 && res < size) // Success break; // Buffer wasn't big enough, try again: size *= 2; // If too large or out of memory, take what we have: } while (size <= MAXSIZE && str->reset(size)); return res; } } namespace QTestPrivate { void generateTestIdentifier(QTestCharBuffer *identifier, int parts) { const char *testObject = parts & TestObject ? QTestResult::currentTestObjectName() : ""; const char *testFunction = parts & TestFunction ? (QTestResult::currentTestFunction() ? QTestResult::currentTestFunction() : "UnknownTestFunc") : ""; const char *objectFunctionFiller = parts & TestObject && parts & (TestFunction | TestDataTag) ? "::" : ""; const char *testFuctionStart = parts & TestFunction ? "(" : ""; const char *testFuctionEnd = parts & TestFunction ? ")" : ""; const char *dataTag = (parts & TestDataTag) && QTestResult::currentDataTag() ? QTestResult::currentDataTag() : ""; const char *globalDataTag = (parts & TestDataTag) && QTestResult::currentGlobalDataTag() ? QTestResult::currentGlobalDataTag() : ""; const char *tagFiller = (dataTag[0] && globalDataTag[0]) ? ":" : ""; QTest::qt_asprintf(identifier, "%s%s%s%s%s%s%s%s", testObject, objectFunctionFiller, testFunction, testFuctionStart, globalDataTag, tagFiller, dataTag, testFuctionEnd); } } QT_END_NAMESPACE