For built-in types, this is a compile-time assert - we should not have
any types in Qt for which we have neither debug streaming nor a
QTest::toString specialization implemented. A build of most of Qt
submodules passes with this change, after minor modifications to some
tests. We cannot declare QSizeHint::Policy as a metatype after the
QMetaType has already been instantiated for it, and the QDebug stream
operator for QElaspedTimer needs to be correctly declared within the
namespace.
Add a self-test function for a custom type, and update reference files
of the self-test.
Task-number: QTBUG-104867
Pick-to: 6.4
Change-Id: I2936db5933f4589fce45f47cf2f3224ed614d8c9
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
[ChangeLog][QTestLib] QCOMPARE now evaluates toString() on its
arguments lazily, speeding up the general case where the comparison
doesn't fail. This is true for the QCOMPARE functionality provided
by Qt. If you specialized qCompare() for your own types, then you
need to change its implementation in line with Qt's own qCompare()
specializations in order to enable this feature.
[ChangeLog][QTestLib] QCOMPARE calls with nullptr argument(s) will
now print the actual and expected values upon failure.
Previously it was not like that because of the compareHelper()
overload in qtestresult.cpp that treated the presence of
nullptr-arguments as a reason to ignore formatFailMessage() call.
New implementation does not have this check, and correctly
executes formatFailMessage() for all arguments.
Note that the qCompare() overloads that call QTestResult::compare()
internally were not affected by this patch, because they already
defer toString() invocation until the comparison fails.
Some numbers, collected against shared release developer build.
I checked how this change affects the test execution. The idea was
to pick some tests for types that do not have a specific
QTestResult::compare overload, so I picked a couple of QByteArray
tests.
The comparison is done by running a test 10 times and taking the
average execution duration, as reported in the log.
tst_qbytearrayapisymmetry:
Before: 15.6 ms
After: 14.2 ms
tst_qbytearray:
Before: 41 ms
After: 36 ms
The benefit is around 9% and 12% respectively.
Fixes: QTBUG-98874
Change-Id: I7d59ddc760168b15974e7720930f629fb34efa13
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Also regenerate the expected output for tst_selftests, to match new
output. Changed one line source code in tst_seftests for the
same purpose.
Change-Id: I930ba4bb290568d6f67a8910a781725f01f08bf1
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Output object name and class in QCOMPARE(). This should help
to debug flaky QWidget tests that for example check on focusWidget().
[ChangeLog][QtTestLib] QCOMPARE() now reports QObject * values by class and objectName().
Task-number: QTBUG-64446
Change-Id: Ife04e89bba04fc78d077c8f0f07af17a17c9cf8c
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
