diff options
Diffstat (limited to 'tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp')
| -rw-r--r-- | tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp index 81edb36916..105a3b27bf 100644 --- a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp +++ b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp @@ -92,6 +92,8 @@ private slots: void remove(); void erase(); + // special cases: + void copesWithCopyabilityOfMoveOnlyVector(); // QTBUG-109745 private: template <typename T> void defaultConstructor(); @@ -1640,5 +1642,26 @@ void tst_QVarLengthArray::erase() QCOMPARE(arr, QVarLengthArray<QString>({ "val0" })); } +void tst_QVarLengthArray::copesWithCopyabilityOfMoveOnlyVector() +{ + // std::vector<move-only-type> is_copyable + // (https://quuxplusone.github.io/blog/2020/02/05/vector-is-copyable-except-when-its-not/) + + QVarLengthArray<std::vector<std::unique_ptr<int>>, 2> vla; + vla.emplace_back(42); + vla.emplace_back(43); + vla.emplace_back(44); // goes to the heap + QCOMPARE_EQ(vla.size(), 3); + QCOMPARE_EQ(vla.front().size(), 42U); + QCOMPARE_EQ(vla.front().front(), nullptr); + QCOMPARE_EQ(vla.back().size(), 44U); + + auto moved = std::move(vla); + QCOMPARE_EQ(moved.size(), 3); + QCOMPARE_EQ(moved.front().size(), 42U); + QCOMPARE_EQ(moved.front().front(), nullptr); + QCOMPARE_EQ(moved.back().size(), 44U); +} + QTEST_APPLESS_MAIN(tst_QVarLengthArray) #include "tst_qvarlengtharray.moc" |