diff options
Diffstat (limited to 'tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp')
| -rw-r--r-- | tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp b/tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp index 015cbcc0e7..b7c2b952e2 100644 --- a/tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp +++ b/tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp @@ -1,10 +1,12 @@ // Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sérgio Martins <sergio.martins@kdab.com> // Copyright (C) 2020 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only #include <QTest> #include <QtCore/QScopeGuard> +#include <optional> + /*! \class tst_QScopeGuard \internal @@ -20,6 +22,7 @@ private Q_SLOTS: void construction(); void constructionFromLvalue(); void constructionFromRvalue(); + void optionalGuard(); void leavingScope(); void exceptions(); }; @@ -117,6 +120,24 @@ void tst_QScopeGuard::constructionFromRvalue() QCOMPARE(Callable::moved, 1); } +void tst_QScopeGuard::optionalGuard() +{ + int i = 0; + auto lambda = [&] { ++i; }; + std::optional sg = false ? std::optional{qScopeGuard(lambda)} : std::nullopt; + QVERIFY(!sg); + QCOMPARE(i, 0); + sg.emplace(qScopeGuard(lambda)); + QVERIFY(sg); + sg->dismiss(); + sg.reset(); + QCOMPARE(i, 0); + sg.emplace(qScopeGuard(lambda)); + QCOMPARE(i, 0); + sg.reset(); + QCOMPARE(i, 1); +} + void tst_QScopeGuard::leavingScope() { auto cleanup = qScopeGuard([] { s_globalState++; QCOMPARE(s_globalState, 3); }); |