diff options
Diffstat (limited to 'tests/auto/exceptionsafety_objects/tst_exceptionsafety_objects.cpp')
| -rw-r--r-- | tests/auto/exceptionsafety_objects/tst_exceptionsafety_objects.cpp | 765 |
1 files changed, 765 insertions, 0 deletions
diff --git a/tests/auto/exceptionsafety_objects/tst_exceptionsafety_objects.cpp b/tests/auto/exceptionsafety_objects/tst_exceptionsafety_objects.cpp new file mode 100644 index 0000000000..e7e516eddd --- /dev/null +++ b/tests/auto/exceptionsafety_objects/tst_exceptionsafety_objects.cpp @@ -0,0 +1,765 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 <QtGui/QtGui> +#include <QtTest/QtTest> + +#include <stddef.h> +#include <exception> + +QT_USE_NAMESPACE + +// this test only works with +// * GLIBC +// * MSVC - only debug builds (we need the crtdbg.h helpers) +// * SYMBIAN +#if (defined(QT_NO_EXCEPTIONS) || (!defined(__GLIBC__) && !defined(Q_CC_MSVC) && !defined(Q_OS_SYMBIAN))) && !defined(Q_MOC_RUN) + QTEST_NOOP_MAIN +#else + +#include "oomsimulator.h" +#if !defined(Q_OS_SYMBIAN) +#include "3rdparty/memcheck.h" +#endif + +class tst_ExceptionSafetyObjects: public QObject +{ + Q_OBJECT + +public slots: + void initTestCase(); + void cleanupTestCase(); + +private slots: + void objects_data(); + void objects(); + + void widgets_data(); + void widgets(); + + void vector_data(); + void vector(); + + void list_data(); + void list(); + + void linkedList_data(); + void linkedList(); + +private: + static QtMsgHandler testMessageHandler; + static void safeMessageHandler(QtMsgType, const char *); +}; + +// helper structs to create an arbitrary widget +struct AbstractTester +{ + virtual void operator()(QObject *parent) = 0; +}; +Q_DECLARE_METATYPE(AbstractTester *) + +typedef void (*TestFunction)(QObject*); +Q_DECLARE_METATYPE(TestFunction) + +template <typename T> +struct ObjectCreator : public AbstractTester +{ + void operator()(QObject *) + { + QScopedPointer<T> ptr(new T); + } +}; + +struct BitArrayCreator : public AbstractTester +{ + void operator()(QObject *) + { QScopedPointer<QBitArray> bitArray(new QBitArray(100, true)); } +}; + +struct ByteArrayMatcherCreator : public AbstractTester +{ + void operator()(QObject *) + { QScopedPointer<QByteArrayMatcher> ptr(new QByteArrayMatcher("ralf test",8)); } +}; + +struct CryptographicHashCreator : public AbstractTester +{ + void operator()(QObject *) + { + QScopedPointer<QCryptographicHash> ptr(new QCryptographicHash(QCryptographicHash::Sha1)); + ptr->addData("ralf test",8); + } +}; + +struct DataStreamCreator : public AbstractTester +{ + void operator()(QObject *) + { + QScopedPointer<QByteArray> arr(new QByteArray("hallo, test")); + QScopedPointer<QDataStream> ptr(new QDataStream(arr.data(), QIODevice::ReadWrite)); + ptr->writeBytes("ralf test",8); + } +}; + +struct DirCreator : public AbstractTester +{ + void operator()(QObject *) + { + QDir::cleanPath("../////././"); + QScopedPointer<QDir> ptr(new QDir(".")); + while( ptr->cdUp() ) + ; // just going up + ptr->count(); + ptr->exists(ptr->path()); + + QStringList filters; + filters << "*.cpp" << "*.cxx" << "*.cc"; + ptr->setNameFilters(filters); + } +}; + +void tst_ExceptionSafetyObjects::objects_data() +{ + QTest::addColumn<AbstractTester *>("objectCreator"); + +#define NEWROW(T) QTest::newRow(#T) << static_cast<AbstractTester *>(new ObjectCreator<T >) + NEWROW(QObject); + NEWROW(QBuffer); + NEWROW(QFile); + NEWROW(QProcess); + NEWROW(QSettings); + NEWROW(QThread); + NEWROW(QThreadPool); + NEWROW(QTranslator); + NEWROW(QFSFileEngine); + +#define NEWROW2(T, CREATOR) QTest::newRow(#T) << static_cast<AbstractTester *>(new CREATOR) + NEWROW2(QBitArray, BitArrayCreator); + NEWROW2(QByteArrayMatcher, ByteArrayMatcherCreator); + NEWROW2(QCryptographicHash, CryptographicHashCreator); + NEWROW2(QDataStream, DataStreamCreator); + NEWROW2(QDir, DirCreator); + +} + +// create and destructs an object, and lets each and every allocation +// during construction and destruction fail. +template <typename T> +static void doOOMTest(T &testFunc, QObject *parent, int start=0) +{ + int currentOOMIndex = start; + bool caught = false; + bool done = false; + + AllocFailer allocFailer(0); + int allocCountBefore = allocFailer.currentAllocIndex(); + + do { + allocFailer.reactivateAt(++currentOOMIndex); + + caught = false; + + try { + testFunc(parent); + } catch (const std::bad_alloc &) { + caught = true; + } catch (const std::exception &ex) { + if (strcmp(ex.what(), "autotest swallow") != 0) + throw; + caught = true; + } + + if (!caught) { + void *buf = malloc(42); + if (buf) { + // we got memory here - oom test is over. + free(buf); + done = true; + } + } + + // if we get a FAIL, stop executing now + if (QTest::currentTestFailed()) + done = true; + +//#define REALLY_VERBOSE +#ifdef REALLY_VERBOSE + fprintf(stderr, " OOM Index: %d\n", currentOOMIndex); +#endif + + + } while (caught || !done); + + allocFailer.deactivate(); + +//#define VERBOSE +#ifdef VERBOSE + fprintf(stderr, "OOM Test done, checked allocs: %d (range %d - %d)\n", currentOOMIndex, + allocCountBefore, allocFailer.currentAllocIndex()); +#else + Q_UNUSED(allocCountBefore); +#endif +} + +static int alloc1Failed = 0; +static int alloc2Failed = 0; +static int alloc3Failed = 0; +static int alloc4Failed = 0; +static int malloc1Failed = 0; +static int malloc2Failed = 0; + +// Tests that new, new[] and malloc() fail at least once during OOM testing. +class SelfTestObject : public QObject +{ +public: + SelfTestObject(QObject *parent = 0) + : QObject(parent) + { + try { delete new int; } catch (const std::bad_alloc &) { ++alloc1Failed; throw; } + try { delete [] new double[5]; } catch (const std::bad_alloc &) { ++alloc2Failed; throw ;} + void *buf = malloc(42); + if (buf) + free(buf); + else + ++malloc1Failed; + } + + ~SelfTestObject() + { + try { delete new int; } catch (const std::bad_alloc &) { ++alloc3Failed; } + try { delete [] new double[5]; } catch (const std::bad_alloc &) { ++alloc4Failed; } + void *buf = malloc(42); + if (buf) + free(buf); + else + ++malloc2Failed = true; + } +}; + +QtMsgHandler tst_ExceptionSafetyObjects::testMessageHandler; + +void tst_ExceptionSafetyObjects::safeMessageHandler(QtMsgType type, const char *msg) +{ + // this temporarily suspends OOM testing while handling a message + int currentIndex = mallocFailIndex; + AllocFailer allocFailer(0); + allocFailer.deactivate(); + (*testMessageHandler)(type, msg); + allocFailer.reactivateAt(currentIndex); +} + +typedef void (*PVF)(); +PVF defaultTerminate; +void debugTerminate() +{ + // you can detect uncaught exceptions with a breakpoint in here + (*defaultTerminate)(); +} + +PVF defaultUnexpected; +void debugUnexpected() +{ + // you can detect unexpected exceptions with a breakpoint in here + (*defaultUnexpected)(); +} + +void tst_ExceptionSafetyObjects::initTestCase() +{ + // set handlers for bad exception cases, you might want to step in and breakpoint the default handlers too + defaultTerminate = std::set_terminate(&debugTerminate); + defaultUnexpected = std::set_unexpected(&debugUnexpected); + testMessageHandler = qInstallMsgHandler(safeMessageHandler); + + QVERIFY(AllocFailer::initialize()); + + // sanity check whether OOM simulation works + AllocFailer allocFailer(0); + + // malloc fail index is 0 -> this malloc should fail. + void *buf = malloc(42); + allocFailer.deactivate(); + QVERIFY(!buf); + + // malloc fail index is 1 - second malloc should fail. + allocFailer.reactivateAt(1); + buf = malloc(42); + void *buf2 = malloc(42); + allocFailer.deactivate(); + + QVERIFY(buf); + free(buf); + QVERIFY(!buf2); + +#ifdef Q_OS_SYMBIAN + // temporary workaround for INC138398 + std::new_handler nh_func = std::set_new_handler(0); + (void) std::set_new_handler(nh_func); +#endif + + ObjectCreator<SelfTestObject> *selfTest = new ObjectCreator<SelfTestObject>; + doOOMTest(*selfTest, 0); + delete selfTest; + QCOMPARE(alloc1Failed, 1); + QCOMPARE(alloc2Failed, 1); + QCOMPARE(alloc3Failed, 2); + QCOMPARE(alloc4Failed, 3); + QCOMPARE(malloc1Failed, 1); + QCOMPARE(malloc2Failed, 1); +} + +void tst_ExceptionSafetyObjects::cleanupTestCase() +{ + qInstallMsgHandler(testMessageHandler); +} + +void tst_ExceptionSafetyObjects::objects() +{ + QFETCH(AbstractTester *, objectCreator); + + doOOMTest(*objectCreator, 0); + + delete objectCreator; +} + +template <typename T> +struct WidgetCreator : public AbstractTester +{ + void operator()(QObject *parent) + { + Q_ASSERT(!parent || parent->isWidgetType()); + QScopedPointer<T> ptr(parent ? new T(static_cast<QWidget *>(parent)) : new T); + } +}; + +// QSizeGrip doesn't have a default constructor - always pass parent (even though it might be 0) +template <> struct WidgetCreator<QSizeGrip> : public AbstractTester +{ + void operator()(QObject *parent) + { + Q_ASSERT(!parent || parent->isWidgetType()); + QScopedPointer<QSizeGrip> ptr(new QSizeGrip(static_cast<QWidget *>(parent))); + } +}; + +// QDesktopWidget doesn't need a parent. +template <> struct WidgetCreator<QDesktopWidget> : public AbstractTester +{ + void operator()(QObject *parent) + { + Q_ASSERT(!parent || parent->isWidgetType()); + QScopedPointer<QDesktopWidget> ptr(new QDesktopWidget()); + } +}; +void tst_ExceptionSafetyObjects::widgets_data() +{ +#ifdef Q_OS_SYMBIAN + // Initialise the S60 rasteriser, which crashes if started while out of memory + QImage image(20, 20, QImage::Format_RGB32); + QPainter p(&image); + p.drawText(0, 15, "foo"); +#endif + + QTest::addColumn<AbstractTester *>("widgetCreator"); + +#undef NEWROW +#define NEWROW(T) QTest::newRow(#T) << static_cast<AbstractTester *>(new WidgetCreator<T >) + + NEWROW(QWidget); + + NEWROW(QButtonGroup); + NEWROW(QDesktopWidget); + NEWROW(QCheckBox); + NEWROW(QComboBox); + NEWROW(QCommandLinkButton); + NEWROW(QDateEdit); + NEWROW(QDateTimeEdit); + NEWROW(QDial); + NEWROW(QDoubleSpinBox); + NEWROW(QFocusFrame); + NEWROW(QFontComboBox); + NEWROW(QFrame); + NEWROW(QGroupBox); + NEWROW(QLCDNumber); + NEWROW(QLabel); + NEWROW(QLCDNumber); + NEWROW(QLineEdit); + NEWROW(QMenu); + NEWROW(QPlainTextEdit); + NEWROW(QProgressBar); + NEWROW(QPushButton); + NEWROW(QRadioButton); + NEWROW(QScrollArea); + NEWROW(QScrollBar); + NEWROW(QSizeGrip); + NEWROW(QSlider); + NEWROW(QSpinBox); + NEWROW(QSplitter); + NEWROW(QStackedWidget); + NEWROW(QStatusBar); + NEWROW(QTabBar); + NEWROW(QTabWidget); + NEWROW(QTextBrowser); + NEWROW(QTextEdit); + NEWROW(QTimeEdit); + NEWROW(QToolBox); + NEWROW(QToolButton); + NEWROW(QStatusBar); + NEWROW(QToolBar); + NEWROW(QMenuBar); + NEWROW(QMainWindow); + NEWROW(QWorkspace); + NEWROW(QColumnView); + NEWROW(QListView); + NEWROW(QListWidget); + NEWROW(QTableView); + NEWROW(QTableWidget); + NEWROW(QTreeView); + NEWROW(QTreeWidget); +} + +void tst_ExceptionSafetyObjects::widgets() +{ + QFETCH(AbstractTester *, widgetCreator); + + doOOMTest(*widgetCreator, 0, 00000); + + QWidget parent; + doOOMTest(*widgetCreator, &parent, 00000); + + delete widgetCreator; + + // if the test reaches here without crashing, we passed :) + QVERIFY(true); +} + +struct Integer +{ + Integer(int value = 42) + : ptr(new int(value)) + { + ++instanceCount; + } + + Integer(const Integer &other) + : ptr(new int(*other.ptr)) + { + ++instanceCount; + } + + Integer &operator=(const Integer &other) + { + int *newPtr = new int(*other.ptr); + delete ptr; + ptr = newPtr; + return *this; + } + + ~Integer() + { + --instanceCount; + delete ptr; + } + + int value() const + { + return *ptr; + } + + int *ptr; + static int instanceCount; +}; + +int Integer::instanceCount = 0; + +struct IntegerMoveable + { + IntegerMoveable(int value = 42) + : val(value) + { + delete new int; + ++instanceCount; + } + + IntegerMoveable(const IntegerMoveable &other) + : val(other.val) + { + delete new int; + ++instanceCount; + } + + IntegerMoveable &operator=(const IntegerMoveable &other) + { + delete new int; + val = other.val; + return *this; + } + + ~IntegerMoveable() + { + --instanceCount; + } + + int value() const + { + return val; + } + + int val; + static int instanceCount; + }; + +int IntegerMoveable::instanceCount = 0; +Q_DECLARE_TYPEINFO(IntegerMoveable, Q_MOVABLE_TYPE); + +template <typename T, template<typename> class Container> +void containerInsertTest(QObject*) +{ + Container<T> container; + + // insert an item in an empty container + try { + container.insert(container.begin(), 41); + } catch (...) { + QVERIFY(container.isEmpty()); + QCOMPARE(T::instanceCount, 0); + return; + } + + QCOMPARE(container.size(), 1); + QCOMPARE(T::instanceCount, 1); + + // insert an item before another item + try { + container.insert(container.begin(), 42); + } catch (...) { + QCOMPARE(container.size(), 1); + QCOMPARE(container.first().value(), 41); + QCOMPARE(T::instanceCount, 1); + return; + } + + QCOMPARE(T::instanceCount, 2); + + // insert an item in between + try { + container.insert(container.begin() + 1, 43); + } catch (...) { + QCOMPARE(container.size(), 2); + QCOMPARE(container.first().value(), 41); + QCOMPARE((container.begin() + 1)->value(), 42); + QCOMPARE(T::instanceCount, 2); + return; + } + + QCOMPARE(T::instanceCount, 3); +} + +template <typename T, template<typename> class Container> +void containerAppendTest(QObject*) +{ + Container<T> container; + + // append to an empty container + try { + container.append(42); + } catch (...) { + QCOMPARE(container.size(), 0); + QCOMPARE(T::instanceCount, 0); + return; + } + + // append to a container with one item + try { + container.append(43); + } catch (...) { + QCOMPARE(container.size(), 1); + QCOMPARE(container.first().value(), 42); + QCOMPARE(T::instanceCount, 1); + return; + } + + Container<T> container2; + + try { + container2.append(44); + } catch (...) { + // don't care + return; + } + QCOMPARE(T::instanceCount, 3); + + // append another container with one item + try { + container += container2; + } catch (...) { + QCOMPARE(container.size(), 2); + QCOMPARE(container.first().value(), 42); + QCOMPARE((container.begin() + 1)->value(), 43); + QCOMPARE(T::instanceCount, 3); + return; + } + + QCOMPARE(T::instanceCount, 4); +} + +template <typename T, template<typename> class Container> +void containerEraseTest(QObject*) +{ + Container<T> container; + + try { + container.append(42); + container.append(43); + container.append(44); + container.append(45); + container.append(46); + } catch (...) { + // don't care + return; + } + + // sanity checks + QCOMPARE(container.size(), 5); + QCOMPARE(T::instanceCount, 5); + + // delete the first one + try { + container.erase(container.begin()); + } catch (...) { + QCOMPARE(container.size(), 5); + QCOMPARE(container.first().value(), 42); + QCOMPARE(T::instanceCount, 5); + return; + } + + QCOMPARE(container.size(), 4); + QCOMPARE(container.first().value(), 43); + QCOMPARE(T::instanceCount, 4); + + // delete the last one + try { + container.erase(container.end() - 1); + } catch (...) { + QCOMPARE(container.size(), 4); + QCOMPARE(T::instanceCount, 4); + return; + } + + QCOMPARE(container.size(), 3); + QCOMPARE(container.first().value(), 43); + QCOMPARE((container.begin() + 1)->value(), 44); + QCOMPARE((container.begin() + 2)->value(), 45); + QCOMPARE(T::instanceCount, 3); + + // delete the middle one + try { + container.erase(container.begin() + 1); + } catch (...) { + QCOMPARE(container.size(), 3); + QCOMPARE(container.first().value(), 43); + QCOMPARE((container.begin() + 1)->value(), 44); + QCOMPARE((container.begin() + 2)->value(), 45); + QCOMPARE(T::instanceCount, 3); + return; + } + + QCOMPARE(container.size(), 2); + QCOMPARE(container.first().value(), 43); + QCOMPARE((container.begin() + 1)->value(), 45); + QCOMPARE(T::instanceCount, 2); +} + +template <template<typename T> class Container> +static void containerData() +{ + QTest::addColumn<TestFunction>("testFunction"); + + QTest::newRow("insert static") << static_cast<TestFunction>(containerInsertTest<Integer, Container>); + QTest::newRow("append static") << static_cast<TestFunction>(containerAppendTest<Integer, Container>); + QTest::newRow("erase static") << static_cast<TestFunction>(containerEraseTest<Integer, Container>); + QTest::newRow("insert moveable") << static_cast<TestFunction>(containerInsertTest<IntegerMoveable, Container>); + QTest::newRow("append moveable") << static_cast<TestFunction>(containerAppendTest<IntegerMoveable, Container>); + QTest::newRow("erase moveable") << static_cast<TestFunction>(containerEraseTest<IntegerMoveable, Container>); +} + +void tst_ExceptionSafetyObjects::vector_data() +{ + containerData<QVector>(); +} + +void tst_ExceptionSafetyObjects::vector() +{ + QFETCH(TestFunction, testFunction); + + if (QLatin1String(QTest::currentDataTag()) == QLatin1String("insert static") + || QLatin1String(QTest::currentDataTag()) == QLatin1String("insert moveable")) + QSKIP("QVector::insert is currently not strongly exception safe", SkipSingle); + + doOOMTest(testFunction, 0); +} + +void tst_ExceptionSafetyObjects::list_data() +{ + containerData<QList>(); +} + +void tst_ExceptionSafetyObjects::list() +{ + QFETCH(TestFunction, testFunction); + + doOOMTest(testFunction, 0); +} + +void tst_ExceptionSafetyObjects::linkedList_data() +{ + containerData<QLinkedList>(); +} + +void tst_ExceptionSafetyObjects::linkedList() +{ + QFETCH(TestFunction, testFunction); + + doOOMTest(testFunction, 0); +} + +QTEST_MAIN(tst_ExceptionSafetyObjects) +#include "tst_exceptionsafety_objects.moc" +#endif // QT_NO_EXCEPTIONS |