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| author | Tobias Hunger <tobias.hunger@qt.io> | 2019-04-16 16:32:08 +0200 |
|---|---|---|
| committer | Tobias Hunger <tobias.hunger@qt.io> | 2019-04-16 16:32:08 +0200 |
| commit | 6630937e63ae5797487b86743a7733c8ae5cc42c (patch) | |
| tree | 3d53dacf6430f9099e1fb20835881205de674961 /tests/auto/corelib/tools/qpair | |
| parent | 37ed6dae00640f9cc980ffda05347c12a7eb5d7e (diff) | |
| parent | c7af193d2e49e9f10b86262e63d8d13abf72b5cf (diff) | |
Merge commit 'dev' into 'wip/cmake-merge'
Change-Id: I176c40d031be26a1dd1cf08843e448a660598783
Diffstat (limited to 'tests/auto/corelib/tools/qpair')
| -rw-r--r-- | tests/auto/corelib/tools/qpair/qpair.pro | 3 | ||||
| -rw-r--r-- | tests/auto/corelib/tools/qpair/tst_qpair.cpp | 30 |
2 files changed, 31 insertions, 2 deletions
diff --git a/tests/auto/corelib/tools/qpair/qpair.pro b/tests/auto/corelib/tools/qpair/qpair.pro index 659be887d3..d684a24a57 100644 --- a/tests/auto/corelib/tools/qpair/qpair.pro +++ b/tests/auto/corelib/tools/qpair/qpair.pro @@ -2,3 +2,6 @@ CONFIG += testcase TARGET = tst_qpair QT = core testlib SOURCES = tst_qpair.cpp + +# Force C++17 if available (needed due to Q_COMPILER_DEDUCTION_GUIDES) +contains(QT_CONFIG, c++1z): CONFIG += c++1z diff --git a/tests/auto/corelib/tools/qpair/tst_qpair.cpp b/tests/auto/corelib/tools/qpair/tst_qpair.cpp index 1d5f7536c8..3c972329bc 100644 --- a/tests/auto/corelib/tools/qpair/tst_qpair.cpp +++ b/tests/auto/corelib/tools/qpair/tst_qpair.cpp @@ -39,10 +39,11 @@ private Q_SLOTS: void testConstexpr(); void testConversions(); void taskQTBUG_48780_pairContainingCArray(); + void testDeducationRules(); }; -class C { char _[4]; }; -class M { char _[4]; }; +class C { C() {} char _[4]; }; +class M { M() {} char _[4]; }; class P { char _[4]; }; QT_BEGIN_NAMESPACE @@ -202,5 +203,30 @@ void tst_QPair::taskQTBUG_48780_pairContainingCArray() Q_UNUSED(pair); } +void tst_QPair::testDeducationRules() +{ +#if defined(__cpp_deduction_guides) && __cpp_deduction_guides >= 201606 + QPair p1{1, 2}; + static_assert(std::is_same<decltype(p1)::first_type, decltype(1)>::value); + static_assert(std::is_same<decltype(p1)::second_type, decltype(2)>::value); + QCOMPARE(p1.first, 1); + QCOMPARE(p1.second, 2); + + QPair p2{QString("string"), 2}; + static_assert(std::is_same<decltype(p2)::first_type, QString>::value); + static_assert(std::is_same<decltype(p2)::second_type, decltype(2)>::value); + QCOMPARE(p2.first, "string"); + QCOMPARE(p2.second, 2); + + QPair p3(p2); + static_assert(std::is_same<decltype(p3)::first_type, decltype(p2)::first_type>::value); + static_assert(std::is_same<decltype(p3)::second_type, decltype(p2)::second_type>::value); + QCOMPARE(p3.first, "string"); + QCOMPARE(p3.second, 2); +#else + QSKIP("Unsupported"); +#endif +} + QTEST_APPLESS_MAIN(tst_QPair) #include "tst_qpair.moc" |