From b35f29a0e061841711529ebfad2d24f7334696dd Mon Sep 17 00:00:00 2001 From: Antoine Pitrou Date: Mon, 4 Apr 2011 19:50:42 +0200 Subject: Issue #11761: make tests for gc.get_count() less fragile --- Lib/test/test_gc.py | 43 +++++++++++++++++++++++++++---------------- 1 file changed, 27 insertions(+), 16 deletions(-) diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py index 3b7df99..9788291 100644 --- a/Lib/test/test_gc.py +++ b/Lib/test/test_gc.py @@ -239,30 +239,41 @@ class GCTests(unittest.TestCase): # The following two tests are fragile: # They precisely count the number of allocations, # which is highly implementation-dependent. - # For example: - # - disposed tuples are not freed, but reused - # - the call to assertEqual somehow avoids building its args tuple + # For example, disposed tuples are not freed, but reused. + # To minimize variations, though, we first store the get_count() results + # and check them at the end. def test_get_count(self): - # Avoid future allocation of method object - assertEqual = self._baseAssertEqual gc.collect() - assertEqual(gc.get_count(), (0, 0, 0)) - a = dict() - # since gc.collect(), we created two objects: - # the dict, and the tuple returned by get_count() - assertEqual(gc.get_count(), (2, 0, 0)) + a, b, c = gc.get_count() + x = [] + d, e, f = gc.get_count() + self.assertEqual((b, c), (0, 0)) + self.assertEqual((e, f), (0, 0)) + # This is less fragile than asserting that a equals 0. + self.assertLess(a, 5) + # Between the two calls to get_count(), at least one object was + # created (the list). + self.assertGreater(d, a) def test_collect_generations(self): - # Avoid future allocation of method object - assertEqual = self.assertEqual gc.collect() - a = dict() + # This object will "trickle" into generation N + 1 after + # each call to collect(N) + x = [] gc.collect(0) - assertEqual(gc.get_count(), (0, 1, 0)) + # x is now in gen 1 + a, b, c = gc.get_count() gc.collect(1) - assertEqual(gc.get_count(), (0, 0, 1)) + # x is now in gen 2 + d, e, f = gc.get_count() gc.collect(2) - assertEqual(gc.get_count(), (0, 0, 0)) + # x is now in gen 3 + g, h, i = gc.get_count() + # We don't check a, d, g since their exact values depends on + # internal implementation details of the interpreter. + self.assertEqual((b, c), (1, 0)) + self.assertEqual((e, f), (0, 1)) + self.assertEqual((h, i), (0, 0)) def test_trashcan(self): class Ouch: -- cgit v0.12 type='hidden' name='id' value='d521453b6f77d59864638a80e7bacfad8664380a'/>
path: root/doc/src/snippets/medianodesnippet.cpp
blob: 373585632c7cb5d76e5211ebfe7b8513392dd704 (plain) 
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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** Foundation and appearing in the file LICENSE.LGPL included in the
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****************************************************************************/

#include <QtGui>

#include <phonon/mediaobject.h>
#include <phonon/audiooutput.h>
#include <phonon/videowidget.h>
#include <phonon/medianode.h>
#include <phonon/path.h>


int main(int argv, char **args)
{
    QApplication app(argv, args);

//![0]
    Phonon::MediaObject *mediaObject = new Phonon::MediaObject;
    Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput;
    Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget;

    Phonon::createPath(mediaObject, audioOutput);
    Phonon::createPath(mediaObject, videoWidget);

    QList<Phonon::Path> inputPaths =
        audioOutput->inputPaths();   // inputPaths = [ mediaObject ]
    QList<Phonon::Path> outputPaths =
        mediaObject->outputPaths(); // outputPaths = [ audioOutput, videoWidget ]
//![0]

    return app.exec();
}
generated by cgit v0.12 at 2025-12-03 23:35:55 (GMT)