diff options
Diffstat (limited to 'tests/auto/qscopedvaluerollback/tst_qscopedvaluerollback.cpp')
| -rw-r--r-- | tests/auto/qscopedvaluerollback/tst_qscopedvaluerollback.cpp | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/tests/auto/qscopedvaluerollback/tst_qscopedvaluerollback.cpp b/tests/auto/qscopedvaluerollback/tst_qscopedvaluerollback.cpp new file mode 100644 index 0000000000..956253fb75 --- /dev/null +++ b/tests/auto/qscopedvaluerollback/tst_qscopedvaluerollback.cpp @@ -0,0 +1,203 @@ +/**************************************************************************** +** +** 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 <QtTest/QtTest> +#include <QtCore/QScopedValueRollback> + +/*! + \class tst_QScopedValueRollback + \internal + \since 4.8 + \brief Tests class QScopedValueRollback. + + */ +class tst_QScopedValueRollback : public QObject +{ + Q_OBJECT + +private Q_SLOTS: + void leavingScope(); + void leavingScopeAfterCommit(); + void rollbackToPreviousCommit(); + void exceptions(); + void earlyExitScope(); +private: + void earlyExitScope_helper(int exitpoint, int &member); +}; + +void tst_QScopedValueRollback::leavingScope() +{ + int i = 0; + bool b = false; + QString s("This is useful"); + + //test rollback on going out of scope + { + QScopedValueRollback<int> ri(i); + QScopedValueRollback<bool> rb(b); + QScopedValueRollback<QString> rs(s); + QCOMPARE(b, false); + QCOMPARE(i, 0); + QCOMPARE(s, QString("This is useful")); + b = true; + i = 1; + s = "Useless"; + QCOMPARE(b, true); + QCOMPARE(i, 1); + QCOMPARE(s, QString("Useless")); + } + QCOMPARE(b, false); + QCOMPARE(i, 0); + QCOMPARE(s, QString("This is useful")); +} + +void tst_QScopedValueRollback::leavingScopeAfterCommit() +{ + int i = 0; + bool b = false; + QString s("This is useful"); + + //test rollback on going out of scope + { + QScopedValueRollback<int> ri(i); + QScopedValueRollback<bool> rb(b); + QScopedValueRollback<QString> rs(s); + QCOMPARE(b, false); + QCOMPARE(i, 0); + QCOMPARE(s, QString("This is useful")); + b = true; + i = 1; + s = "Useless"; + QCOMPARE(b, true); + QCOMPARE(i, 1); + QCOMPARE(s, QString("Useless")); + ri.commit(); + rb.commit(); + rs.commit(); + } + QCOMPARE(b, true); + QCOMPARE(i, 1); + QCOMPARE(s, QString("Useless")); +} + +void tst_QScopedValueRollback::rollbackToPreviousCommit() +{ + int i=0; + { + QScopedValueRollback<int> ri(i); + i++; + ri.commit(); + i++; + } + QCOMPARE(i,1); + { + QScopedValueRollback<int> ri1(i); + i++; + ri1.commit(); + i++; + ri1.commit(); + i++; + } + QCOMPARE(i,3); +} + +void tst_QScopedValueRollback::exceptions() +{ + bool b = false; + bool caught = false; + QT_TRY + { + QScopedValueRollback<bool> rb(b); + b = true; + QT_THROW(std::bad_alloc()); //if Qt compiled without exceptions this is noop + rb.commit(); //if Qt compiled without exceptions, true is committed + } + QT_CATCH(...) + { + caught = true; + } + QCOMPARE(b, !caught); //expect false if exception was thrown, true otherwise +} + +void tst_QScopedValueRollback::earlyExitScope() +{ + int i=0; + int j=0; + while (true) { + QScopedValueRollback<int> ri(i); + i++; + j=i; + if (i>8) break; + ri.commit(); + } + QCOMPARE(i,8); + QCOMPARE(j,9); + + for (i = 0; i < 5; i++) { + j=1; + earlyExitScope_helper(i,j); + QCOMPARE(j, 1<<i); + } +} + +void tst_QScopedValueRollback::earlyExitScope_helper(int exitpoint, int& member) +{ + QScopedValueRollback<int> r(member); + member *= 2; + if (exitpoint == 0) + return; + r.commit(); + member *= 2; + if (exitpoint == 1) + return; + r.commit(); + member *= 2; + if (exitpoint == 2) + return; + r.commit(); + member *= 2; + if (exitpoint == 3) + return; + r.commit(); +} + +QTEST_MAIN(tst_QScopedValueRollback) +#include "tst_qscopedvaluerollback.moc" |