qt5base-lts/tests
Samuel Rødal 677cf76340 Prevent QPixmapCache potentially growing indefinitely.
QPixmapCache has until now refused to throw out shared pixmaps, i.e.
ones that still have shallow copies lying around. This leads to problems
when someone inserts two shallow copies using different keys, causing
the cache itself containing multiple shallow copies and thus forever
refusing to throw out those entries.

It's rather easy for this to accidentally happen in a user application
since QPixmap::load() or QPixmap(const QString &fileName, ...)
automatically cache the pixmap in the QPixmapCache, thus if the user
then calls QPixmapCache::insert() on the same pixmap or a shallow copy
it is locked in the QPixmapCache forever.

The only reason for not throwing out a pixmap that's shared would be to
prevent re-loading a pixmap from file when a user has a direct reference
to it in his application, but in that case the user is unlikely to
re-load the pixmap from file in any case. Therefore it seems the best
fix is to get rid of this limitation.

Task-number: QTBUG-21359
Reviewed-by: John Brooks
Reviewed-by: Olivier Goffart
(cherry picked from commit 7ab0bed3a56d46c386e65abc381264c57137cb43)

Change-Id: I46dce19227e19a25e0287cf7372177430da15a66
Reviewed-on: http://codereview.qt-project.org/4563
Reviewed-by: Paul Olav Tvete <paul.tvete@nokia.com>
2011-10-03 11:55:32 +02:00
..
auto Prevent QPixmapCache potentially growing indefinitely. 2011-10-03 11:55:32 +02:00
baselineserver Remove Symbian-specific code from tests. 2011-09-29 06:41:42 +02:00
benchmarks Remove Symbian-specific code from tests. 2011-09-29 06:41:42 +02:00
global Modularized tst_bic and add some helper functions for global test 2011-04-27 12:06:03 +02:00
manual Remove Symbian-specific code from tests. 2011-09-29 06:41:42 +02:00
shared Update licenseheader text in source files for qtbase Qt module 2011-05-24 12:34:08 +03:00
README Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
tests.pro disable autotests temporarily on Mac 2011-09-14 13:55:41 +02:00

This directory contains autotests and benchmarks based on QTestlib. 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.