qt5base-lts/tests/auto/testlib/selftests/tst_selftests.cpp
Jason McDonald 8a12d5fbf0 Improve cleanup of selftests
The selftest was only attempting to delete the output file at the end of
the entire test run.  This file should actually be deleted after each
subtest to ensure that it does not cause confusing errors if the next
subtest fails to overwrite the output file.

Change-Id: Ia3827926f71a697c6108de3f2b08c969f761d978
Reviewed-on: http://codereview.qt-project.org/5051
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2011-09-17 03:22:18 +02:00

621 lines
20 KiB
C++

/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
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** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore>
#include <QtTest/QtTest>
#include <QtCore/QXmlStreamReader>
#include <private/cycle_p.h>
class tst_Selftests: public QObject
{
Q_OBJECT
private slots:
void runSubTest_data();
void runSubTest();
void cleanup();
private:
void doRunSubTest(QString const& subdir, QString const& logger, QStringList const& arguments );
};
struct BenchmarkResult
{
qint64 total;
qint64 iterations;
QString unit;
inline QString toString() const
{ return QString("total:%1, unit:%2, iterations:%3").arg(total).arg(unit).arg(iterations); }
static BenchmarkResult parse(QString const&, QString*);
};
QT_BEGIN_NAMESPACE
namespace QTest
{
template <>
inline bool qCompare
(BenchmarkResult const &r1, BenchmarkResult const &r2,
const char* actual, const char* expected, const char* file, int line)
{
// First make sure the iterations and unit match.
if (r1.iterations != r2.iterations || r1.unit != r2.unit) {
// Nope - compare whole string for best failure message
return qCompare(r1.toString(), r2.toString(), actual, expected, file, line);
}
// Now check the value. Some variance is allowed, and how much depends on
// the measured unit.
qreal variance = 0.;
if (r1.unit == "msec") {
variance = 0.1;
}
else if (r1.unit == "instruction reads") {
variance = 0.001;
}
else if (r1.unit == "ticks") {
variance = 0.001;
}
if (variance == 0.) {
// No variance allowed - compare whole string
return qCompare(r1.toString(), r2.toString(), actual, expected, file, line);
}
if (qAbs(qreal(r1.total) - qreal(r2.total)) <= qreal(r1.total)*variance) {
return compare_helper(true, "COMPARE()", file, line);
}
// Whoops, didn't match. Compare the whole string for the most useful failure message.
return qCompare(r1.toString(), r2.toString(), actual, expected, file, line);
}
}
QT_END_NAMESPACE
// Split the passed block of text into an array of lines, replacing any
// filenames and line numbers with generic markers to avoid failing the test
// due to compiler-specific behaviour.
static QList<QByteArray> splitLines(QByteArray ba)
{
ba.replace('\r', "");
QList<QByteArray> out = ba.split('\n');
// Replace any ` file="..."' or ` line="..."' in XML with a generic location.
static const char *markers[][2] = {
{ " file=\"", " file=\"__FILE__\"" },
{ " line=\"", " line=\"__LINE__\"" }
};
static const int markerCount = sizeof markers / sizeof markers[0];
for (int i = 0; i < out.size(); ++i) {
QByteArray& line = out[i];
for (int j = 0; j < markerCount; ++j) {
int index = line.indexOf(markers[j][0]);
if (index == -1) {
continue;
}
int end = line.indexOf('"', index + strlen(markers[j][0]));
if (end == -1) {
continue;
}
line.replace(index, end-index + 1, markers[j][1]);
}
}
return out;
}
// Load the expected test output for the nominated test (subdir) and logger
// as an array of lines. If there is no expected output file, return an
// empty array.
static QList<QByteArray> expectedResult(const QString &subdir, const QString &logger)
{
QString suffix = logger;
if (suffix.isEmpty()) {
suffix = "txt";
}
QFile file(":/expected_" + subdir + "." + suffix);
if (!file.open(QIODevice::ReadOnly))
return QList<QByteArray>();
return splitLines(file.readAll());
}
struct Logger
{
Logger(QString const&, QString const&, QStringList const&);
QString name;
QString testdata_suffix;
QStringList arguments;
};
Logger::Logger(QString const& _name, QString const& _testdata_suffix, QStringList const& _arguments)
: name(_name)
, testdata_suffix(_testdata_suffix)
, arguments(_arguments)
{
}
static QList<Logger> allLoggers()
{
return QList<Logger>()
<< Logger("plain", "txt", QStringList())
<< Logger("xml", "xml", QStringList() << "-xml")
<< Logger("xunitxml", "xunitxml", QStringList() << "-xunitxml")
<< Logger("lightxml", "lightxml", QStringList() << "-lightxml")
;
}
void tst_Selftests::runSubTest_data()
{
QTest::addColumn<QString>("subdir");
QTest::addColumn<QString>("logger");
QTest::addColumn<QStringList>("arguments");
QStringList tests = QStringList()
<< "subtest"
<< "warnings"
<< "maxwarnings"
<< "cmptest"
// << "alive" // timer dependent
<< "globaldata"
<< "skipglobal"
<< "skip"
<< "strcmp"
<< "expectfail"
<< "sleep"
<< "fetchbogus"
<< "crashes"
<< "multiexec"
<< "failinit"
<< "failinitdata"
<< "skipinit"
<< "skipinitdata"
<< "datetime"
<< "singleskip"
//on windows assert does nothing in release mode and blocks execution with a popup window in debug mode
#if !defined(Q_OS_WIN)
<< "assert"
#endif
<< "waitwithoutgui"
<< "differentexec"
#ifndef QT_NO_EXCEPTIONS
// The machine that run the intel autotests will popup a dialog
// with a warning that an uncaught exception was thrown.
// This will time out and falsely fail, therefore we disable the test for that platform.
# if !defined(Q_CC_INTEL) || !defined(Q_OS_WIN)
<< "exceptionthrow"
# endif
#endif
<< "qexecstringlist"
<< "datatable"
<< "commandlinedata"
#if defined(__GNUC__) && defined(__i386) && defined(Q_OS_LINUX)
<< "benchlibcallgrind"
#endif
<< "benchlibeventcounter"
<< "benchliboptions"
//### These tests are affected by timing and whether the CPU tick counter is
//### monotonically increasing. They won't work on some machines so leave them off by default.
//### Feel free to uncomment for your own testing.
#if 0
<< "benchlibwalltime"
<< "benchlibtickcounter"
#endif
<< "xunit"
<< "longstring"
<< "badxml"
;
foreach (Logger const& logger, allLoggers()) {
QString rowSuffix;
if (logger.name != "plain") {
rowSuffix = QString(" %1").arg(logger.name);
}
foreach (QString const& subtest, tests) {
QStringList arguments = logger.arguments;
if (subtest == "commandlinedata") {
arguments << QString("fiveTablePasses fiveTablePasses:fiveTablePasses_data1 -v2").split(' ');
}
else if (subtest == "benchlibcallgrind") {
arguments << "-callgrind";
}
else if (subtest == "benchlibeventcounter") {
arguments << "-eventcounter";
}
else if (subtest == "benchliboptions") {
arguments << "-eventcounter";
}
else if (subtest == "benchlibtickcounter") {
arguments << "-tickcounter";
}
else if (subtest == "badxml") {
arguments << "-eventcounter";
}
// These tests don't work right with loggers other than plain, usually because
// they internally supply arguments to themselves.
if (logger.name != "plain") {
if (subtest == "differentexec") {
continue;
}
if (subtest == "qexecstringlist") {
continue;
}
if (subtest == "benchliboptions") {
continue;
}
if (subtest == "waitwithoutgui") {
continue;
}
// `crashes' will not output valid XML on platforms without a crash handler
if (subtest == "crashes") {
continue;
}
// this test prints out some floats in the testlog and the formatting is
// platform-specific and hard to predict.
if (subtest == "subtest") {
continue;
}
}
QTest::newRow(qPrintable(QString("%1%2").arg(subtest).arg(rowSuffix)))
<< subtest
<< logger.testdata_suffix
<< arguments
;
}
}
}
void tst_Selftests::doRunSubTest(QString const& subdir, QString const& logger, QStringList const& arguments )
{
// For the plain text logger, we'll read straight from standard output.
// For all other loggers (XML), we'll tell testlib to redirect to a file.
// The reason is that tests are allowed to print to standard output, and
// that means the test log is no longer guaranteed to be valid XML.
QStringList extraArguments;
QString logfile;
if (logger != "txt") {
logfile = "test_output";
extraArguments << "-o" << logfile;
}
QProcess proc;
proc.setEnvironment(QStringList(""));
proc.start(subdir + "/" + subdir, QStringList() << arguments << extraArguments);
QVERIFY2(proc.waitForFinished(), qPrintable(proc.errorString()));
QByteArray out;
if (logfile.isEmpty()) {
out = proc.readAllStandardOutput();
} else {
QFile file(logfile);
if (file.open(QIODevice::ReadOnly))
out = file.readAll();
}
const QByteArray err(proc.readAllStandardError());
// Some tests may output unpredictable strings to stderr, which we'll ignore.
//
// For instance, uncaught exceptions on Windows might say (depending on Windows
// version and JIT debugger settings):
// "This application has requested the Runtime to terminate it in an unusual way.
// Please contact the application's support team for more information."
//
// Also, tests which use valgrind may generate warnings if the toolchain is
// newer than the valgrind version, such that valgrind can't understand the
// debug information on the binary.
if (subdir != QLatin1String("exceptionthrow")
&& subdir != QLatin1String("fetchbogus")
&& subdir != QLatin1String("xunit")
&& subdir != QLatin1String("benchlibcallgrind"))
QVERIFY2(err.isEmpty(), err.constData());
QList<QByteArray> res = splitLines(out);
QList<QByteArray> exp = expectedResult(subdir, logger);
if (exp.count() == 0) {
QList<QList<QByteArray> > expArr;
int i = 1;
do {
exp = expectedResult(subdir + QString("_%1").arg(i++), logger);
if (exp.count())
expArr += exp;
} while (exp.count());
for (int j = 0; j < expArr.count(); ++j) {
if (res.count() == expArr.at(j).count()) {
exp = expArr.at(j);
break;
}
}
} else {
QCOMPARE(res.count(), exp.count());
}
if (logger == "xunitxml" || logger == "xml" || logger == "lightxml") {
QByteArray xml(out);
// lightxml intentionally skips the root element, which technically makes it
// not valid XML.
// We'll add that ourselves for the purpose of validation.
if (logger == "lightxml") {
xml.prepend("<root>");
xml.append("</root>");
}
QXmlStreamReader reader(xml);
while(!reader.atEnd())
reader.readNext();
QVERIFY2(!reader.error(), qPrintable(QString("line %1, col %2: %3")
.arg(reader.lineNumber())
.arg(reader.columnNumber())
.arg(reader.errorString())
));
}
bool benchmark = false;
for (int i = 0; i < res.count(); ++i) {
QByteArray line = res.at(i);
if (line.startsWith("Config: Using QTest"))
continue;
// the __FILE__ __LINE__ output is compiler dependent, skip it
if (line.startsWith(" Loc: [") && line.endsWith(")]"))
continue;
if (line.endsWith(" : failure location"))
continue;
const QString output(QString::fromLatin1(line));
const QString expected(QString::fromLatin1(exp.at(i)).replace("@INSERT_QT_VERSION_HERE@", QT_VERSION_STR));
// Q_ASSERT uses __FILE__. Some compilers include the absolute path in
// __FILE__, while others do not.
if (line.contains("ASSERT") && output != expected) {
const char msg[] = "Q_ASSERT prints out the absolute path on this platform.";
QEXPECT_FAIL("assert", msg, Continue);
QEXPECT_FAIL("assert xml", msg, Continue);
QEXPECT_FAIL("assert lightxml", msg, Continue);
QEXPECT_FAIL("assert xunitxml", msg, Continue);
}
if (expected.startsWith(QLatin1String("FAIL! : tst_Exception::throwException() Caught unhandled exce")) && expected != output)
// On some platforms we compile without RTTI, and as a result we never throw an exception.
QCOMPARE(output.simplified(), QString::fromLatin1("tst_Exception::throwException()").simplified());
else if (output != expected && qstrcmp(QTest::currentDataTag(), "subtest") == 0)
// The floating point formatting differs between platforms, so let's just skip it.
continue;
else if (benchmark || line.startsWith("<BenchmarkResult")) {
// Don't do a literal comparison for benchmark results, since
// results have some natural variance.
QString error;
BenchmarkResult actualResult = BenchmarkResult::parse(output, &error);
QVERIFY2(error.isEmpty(), qPrintable(QString("Actual line didn't parse as benchmark result: %1\nLine: %2").arg(error).arg(output)));
BenchmarkResult expectedResult = BenchmarkResult::parse(expected, &error);
QVERIFY2(error.isEmpty(), qPrintable(QString("Expected line didn't parse as benchmark result: %1\nLine: %2").arg(error).arg(expected)));
QCOMPARE(actualResult, expectedResult);
} else {
QCOMPARE(output, expected);
}
benchmark = line.startsWith("RESULT : ");
}
}
void tst_Selftests::runSubTest()
{
QFETCH(QString, subdir);
QFETCH(QString, logger);
QFETCH(QStringList, arguments);
doRunSubTest(subdir, logger, arguments);
}
// attribute must contain ="
QString extractXmlAttribute(const QString &line, const char *attribute)
{
int index = line.indexOf(attribute);
if (index == -1)
return QString();
int end = line.indexOf('"', index + strlen(attribute));
if (end == -1)
return QString();
QString result = line.mid(index + strlen(attribute), end - index - strlen(attribute));
if (result.isEmpty())
return ""; // ensure empty but not null
return result;
}
// Parse line into the BenchmarkResult it represents.
BenchmarkResult BenchmarkResult::parse(QString const& line, QString* error)
{
if (error) *error = QString();
BenchmarkResult out;
QString remaining = line.trimmed();
if (remaining.isEmpty()) {
if (error) *error = "Line is empty";
return out;
}
if (line.startsWith("<BenchmarkResult ")) {
// XML result
// format:
// <BenchmarkResult metric="$unit" tag="$tag" value="$total" iterations="$iterations" />
if (!line.endsWith("/>")) {
if (error) *error = "unterminated XML";
return out;
}
QString unit = extractXmlAttribute(line, " metric=\"");
QString sTotal = extractXmlAttribute(line, " value=\"");
QString sIterations = extractXmlAttribute(line, " iterations=\"");
if (unit.isNull() || sTotal.isNull() || sIterations.isNull()) {
if (error) *error = "XML snippet did not contain all required values";
return out;
}
bool ok;
double total = sTotal.toDouble(&ok);
if (!ok) {
if (error) *error = sTotal + " is not a valid number";
return out;
}
double iterations = sIterations.toDouble(&ok);
if (!ok) {
if (error) *error = sIterations + " is not a valid number";
return out;
}
out.unit = unit;
out.total = total;
out.iterations = iterations;
return out;
}
// Text result
// This code avoids using a QRegExp because QRegExp might be broken.
// Sample format: 4,000 msec per iteration (total: 4,000, iterations: 1)
QString sFirstNumber;
while (!remaining.isEmpty() && !remaining.at(0).isSpace()) {
sFirstNumber += remaining.at(0);
remaining.remove(0,1);
}
remaining = remaining.trimmed();
// 4,000 -> 4000
sFirstNumber.remove(',');
// Should now be parseable as floating point
bool ok;
double firstNumber = sFirstNumber.toDouble(&ok);
if (!ok) {
if (error) *error = sFirstNumber + " (at beginning of line) is not a valid number";
return out;
}
// Remaining: msec per iteration (total: 4000, iterations: 1)
static const char periterbit[] = " per iteration (total: ";
QString unit;
while (!remaining.startsWith(periterbit) && !remaining.isEmpty()) {
unit += remaining.at(0);
remaining.remove(0,1);
}
if (remaining.isEmpty()) {
if (error) *error = "Could not find pattern: '<unit> per iteration (total: '";
return out;
}
remaining = remaining.mid(sizeof(periterbit)-1);
// Remaining: 4,000, iterations: 1)
static const char itersbit[] = ", iterations: ";
QString sTotal;
while (!remaining.startsWith(itersbit) && !remaining.isEmpty()) {
sTotal += remaining.at(0);
remaining.remove(0,1);
}
if (remaining.isEmpty()) {
if (error) *error = "Could not find pattern: '<number>, iterations: '";
return out;
}
remaining = remaining.mid(sizeof(itersbit)-1);
// 4,000 -> 4000
sTotal.remove(',');
double total = sTotal.toDouble(&ok);
if (!ok) {
if (error) *error = sTotal + " (total) is not a valid number";
return out;
}
// Remaining: 1)
QString sIters;
while (remaining != QLatin1String(")") && !remaining.isEmpty()) {
sIters += remaining.at(0);
remaining.remove(0,1);
}
if (remaining.isEmpty()) {
if (error) *error = "Could not find pattern: '<num>)'";
return out;
}
qint64 iters = sIters.toLongLong(&ok);
if (!ok) {
if (error) *error = sIters + " (iterations) is not a valid integer";
return out;
}
double calcFirstNumber = double(total)/double(iters);
if (!qFuzzyCompare(firstNumber, calcFirstNumber)) {
if (error) *error = QString("total/iters is %1, but benchlib output result as %2").arg(calcFirstNumber).arg(firstNumber);
return out;
}
out.total = total;
out.unit = unit;
out.iterations = iters;
return out;
}
void tst_Selftests::cleanup()
{
// Remove the test output file
QFile::remove("test_output");
}
QTEST_MAIN(tst_Selftests)
#include "tst_selftests.moc"