0681a2dd5a
[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> |
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README |
This directory contains autotests and benchmarks based on Qt Test. In order to run the autotests reliably, you need to configure a desktop to match the test environment that these tests are written for. Linux X11: * The user must be logged in to an active desktop; you can't run the autotests without a valid DISPLAY that allows X11 connections. * The tests are run against a KDE3 or KDE4 desktop. * Window manager uses "click to focus", and not "focus follows mouse". Many tests move the mouse cursor around and expect this to not affect focus and activation. * Disable "click to activate", i.e., when a window is opened, the window manager should automatically activate it (give it input focus) and not wait for the user to click the window.