--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qfuture/tst_qfuture.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1440 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QCoreApplication>
+#include <QDebug>
+
+#define QFUTURE_TEST
+
+#include <QtTest/QtTest>
+#include <qfuture.h>
+#include "versioncheck.h"
+#include <qfuturewatcher.h>
+#include <qtconcurrentresultstore.h>
+#include <qtconcurrentexception.h>
+
+#ifndef QT_NO_CONCURRENT_TEST
+#include <private/qfutureinterface_p.h>
+
+using namespace QtConcurrent;
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QFuture: public QObject
+{
+ Q_OBJECT
+private slots:
+ void resultStore();
+ void future();
+ void futureInterface();
+ void refcounting();
+ void cancel();
+ void statePropagation();
+ void multipleResults();
+ void indexedResults();
+ void progress();
+ void progressText();
+ void resultsAfterFinished();
+ void resultsAsList();
+ void implicitConversions();
+ void iterators();
+ void pause();
+ void throttling();
+ void voidConversions();
+#ifndef QT_NO_EXCEPTIONS
+ void exceptions();
+#endif
+};
+
+QTEST_MAIN(tst_QFuture)
+
+void tst_QFuture::resultStore()
+{
+ int int0 = 0;
+ int int1 = 1;
+ int int2 = 2;
+
+ {
+ ResultStore<int> store;
+ ResultIteratorBase it = store.begin();
+ QVERIFY(store.begin() == store.end());
+ QVERIFY(store.resultAt(0) == store.end());
+ QVERIFY(store.resultAt(1) == store.end());
+ }
+
+
+ {
+ ResultStoreBase store;
+ store.addResult(-1, &int0); // note to self: adding a pointer to the stack here is ok since
+ store.addResult(1, &int1); // ResultStoreBase does not take ownership, only ResultStore<> does.
+ ResultIteratorBase it = store.begin();
+ QCOMPARE(it.resultIndex(), 0);
+ QVERIFY(it == store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 1);
+ QVERIFY(it != store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QVERIFY(it != store.begin());
+ QVERIFY(it == store.end());
+ }
+
+ QVector<int> vec0 = QVector<int>() << 2 << 3;
+ QVector<int> vec1 = QVector<int>() << 4 << 5;
+
+ {
+ ResultStoreBase store;
+ store.addResults(-1, &vec0, 2, 2);
+ store.addResults(-1, &vec1, 2, 2);
+ ResultIteratorBase it = store.begin();
+ QCOMPARE(it.resultIndex(), 0);
+ QVERIFY(it == store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 1);
+ QVERIFY(it != store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 2);
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 3);
+
+ ++it;
+ QVERIFY(it == store.end());
+ }
+ {
+ ResultStoreBase store;
+ store.addResult(-1, &int0);
+ store.addResults(-1, &vec1, 2, 2);
+ store.addResult(-1, &int1);
+
+ ResultIteratorBase it = store.begin();
+ QCOMPARE(it.resultIndex(), 0);
+ QVERIFY(it == store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 1);
+ QVERIFY(it != store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 2);
+ QVERIFY(it != store.end());
+ ++it;
+ QCOMPARE(it.resultIndex(), 3);
+ QVERIFY(it != store.end());
+ ++it;
+ QVERIFY(it == store.end());
+
+ QCOMPARE(store.resultAt(0).resultIndex(), 0);
+ QCOMPARE(store.resultAt(1).resultIndex(), 1);
+ QCOMPARE(store.resultAt(2).resultIndex(), 2);
+ QCOMPARE(store.resultAt(3).resultIndex(), 3);
+ QCOMPARE(store.resultAt(4), store.end());
+ }
+ {
+ ResultStore<int> store;
+ store.addResult(-1, &int0);
+ store.addResults(-1, &vec0);
+ store.addResult(-1, &int1);
+
+ ResultIteratorBase it = store.begin();
+ QCOMPARE(it.resultIndex(), 0);
+ QVERIFY(it == store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 1);
+ QVERIFY(it != store.begin());
+ QVERIFY(it != store.end());
+
+ ++it;
+ QCOMPARE(it.resultIndex(), 2);
+ QVERIFY(it != store.end());
+ ++it;
+ QCOMPARE(it.resultIndex(), 3);
+ QVERIFY(it != store.end());
+ ++it;
+ QVERIFY(it == store.end());
+
+ QCOMPARE(store.resultAt(0).value(), int0);
+ QCOMPARE(store.resultAt(1).value(), vec0[0]);
+ QCOMPARE(store.resultAt(2).value(), vec0[1]);
+ QCOMPARE(store.resultAt(3).value(), int1);
+ }
+ {
+ ResultStore<int> store;
+ store.addResult(-1, &int0);
+ store.addResults(-1, &vec0);
+ store.addResult(200, &int1);
+
+ QCOMPARE(store.resultAt(0).value(), int0);
+ QCOMPARE(store.resultAt(1).value(), vec0[0]);
+ QCOMPARE(store.resultAt(2).value(), vec0[1]);
+ QCOMPARE(store.resultAt(200).value(), int1);
+ }
+
+ {
+ ResultStore<int> store;
+ store.addResult(1, &int1);
+ store.addResult(0, &int0);
+ store.addResult(-1, &int2);
+
+ QCOMPARE(store.resultAt(0).value(), int0);
+ QCOMPARE(store.resultAt(1).value(), int1);
+ QCOMPARE(store.resultAt(2).value(), int2);
+ }
+
+ {
+ ResultStore<int> store;
+ QCOMPARE(store.contains(0), false);
+ QCOMPARE(store.contains(1), false);
+ QCOMPARE(store.contains(INT_MAX), false);
+ }
+
+ {
+ // Test filter mode, where "gaps" in the result array aren't allowed.
+ ResultStore<int> store;
+ store.setFilterMode(true);
+
+ store.addResult(0, &int0);
+ QCOMPARE(store.contains(0), true);
+
+ store.addResult(2, &int2); // add result at index 2
+ QCOMPARE(store.contains(2), false); // but 1 is missing, so this 2 won't be reported yet.
+
+ store.addResult(1, &int1);
+ QCOMPARE(store.contains(1), true);
+ QCOMPARE(store.contains(2), true); // 2 should be visible now.
+
+ store.addResult(4, &int0);
+ store.addResult(5, &int0);
+ store.addResult(7, &int0);
+ QCOMPARE(store.contains(4), false);
+ QCOMPARE(store.contains(5), false);
+ QCOMPARE(store.contains(7), false);
+
+ store.addResult(3, &int0); // adding 3 makes 4 and 5 visible
+ QCOMPARE(store.contains(4), true);
+ QCOMPARE(store.contains(5), true);
+ QCOMPARE(store.contains(7), false);
+
+ store.addResult(6, &int0); // adding 6 makes 7 visible
+
+ QCOMPARE(store.contains(6), true);
+ QCOMPARE(store.contains(7), true);
+ QCOMPARE(store.contains(8), false);
+ }
+
+ {
+ // test canceled results
+ ResultStore<int> store;
+ store.setFilterMode(true);
+
+ store.addResult(0, &int0);
+ QCOMPARE(store.contains(0), true);
+
+ store.addResult(2, &int0);
+ QCOMPARE(store.contains(2), false);
+
+ store.addCanceledResult(1); // report no result at 1
+
+ QCOMPARE(store.contains(0), true);
+ QCOMPARE(store.contains(1), true); // 2 gets renamed to 1
+ QCOMPARE(store.contains(2), false);
+
+ store.addResult(3, &int0);
+ QCOMPARE(store.contains(2), true); //3 gets renamed to 2
+
+ store.addResult(6, &int0);
+ store.addResult(7, &int0);
+ QCOMPARE(store.contains(3), false);
+
+ store.addCanceledResult(4);
+ store.addCanceledResult(5);
+
+ QCOMPARE(store.contains(3), true); //6 gets renamed to 3
+ QCOMPARE(store.contains(4), true); //7 gets renamed to 4
+
+ store.addResult(8, &int0);
+ QCOMPARE(store.contains(5), true); //8 gets renamed to 4
+
+ QCOMPARE(store.contains(6), false);
+ QCOMPARE(store.contains(7), false);
+ }
+
+ {
+ // test addResult return value
+ ResultStore<int> store;
+ store.setFilterMode(true);
+
+ store.addResult(0, &int0);
+ QCOMPARE(store.count(), 1); // result 0 becomes available
+ QCOMPARE(store.contains(0), true);
+
+ store.addResult(2, &int0);
+ QCOMPARE(store.count(), 1);
+ QCOMPARE(store.contains(2), false);
+
+ store.addCanceledResult(1);
+ QCOMPARE(store.count(), 2); // result 2 is renamed to 1 and becomes available
+
+ QCOMPARE(store.contains(0), true);
+ QCOMPARE(store.contains(1), true);
+ QCOMPARE(store.contains(2), false);
+
+ store.addResult(3, &int0);
+ QCOMPARE(store.count(), 3);
+ QCOMPARE(store.contains(2), true);
+
+ store.addResult(6, &int0);
+ QCOMPARE(store.count(), 3);
+ store.addResult(7, &int0);
+ QCOMPARE(store.count(), 3);
+ QCOMPARE(store.contains(3), false);
+
+ store.addCanceledResult(4);
+ store.addCanceledResult(5);
+ QCOMPARE(store.count(), 5); // 6 and 7 is renamed to 3 and 4 and becomes available
+
+ QCOMPARE(store.contains(3), true);
+ QCOMPARE(store.contains(4), true);
+
+ store.addResult(8, &int0);
+ QCOMPARE(store.contains(5), true);
+ QCOMPARE(store.count(), 6);
+
+ QCOMPARE(store.contains(6), false);
+ QCOMPARE(store.contains(7), false);
+ }
+
+ {
+ // test resultCount in non-filtered mode. It should always be possible
+ // to iterate through the results 0 to resultCount.
+ ResultStore<int> store;
+ store.addResult(0, &int0);
+
+ QCOMPARE(store.count(), 1);
+
+ store.addResult(2, &int0);
+
+ QCOMPARE(store.count(), 1);
+
+ store.addResult(1, &int0);
+ QCOMPARE(store.count(), 3);
+ }
+
+ {
+ ResultStore<int> store;
+ store.addResult(2, &int0);
+ QCOMPARE(store.count(), 0);
+
+ store.addResult(1, &int0);
+ QCOMPARE(store.count(), 0);
+
+ store.addResult(0, &int0);
+ QCOMPARE(store.count(), 3);
+ }
+
+ {
+ ResultStore<int> store;
+ store.addResults(2, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addResult(1, &int0);
+ QCOMPARE(store.count(), 0);
+
+ store.addResult(0, &int0);
+ QCOMPARE(store.count(), 4);
+ }
+
+ {
+ ResultStore<int> store;
+ store.addResults(2, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addResults(0, &vec0);
+ QCOMPARE(store.count(), 4);
+ }
+ {
+ ResultStore<int> store;
+ store.addResults(3, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addResults(0, &vec0);
+ QCOMPARE(store.count(), 2);
+
+ store.addResult(2, &int0);
+ QCOMPARE(store.count(), 5);
+ }
+
+ {
+ ResultStore<int> store;
+ store.setFilterMode(true);
+ store.addResults(3, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addResults(0, &vec0);
+ QCOMPARE(store.count(), 2);
+
+ store.addCanceledResult(2);
+ QCOMPARE(store.count(), 4);
+ }
+
+ {
+ ResultStore<int> store;
+ store.setFilterMode(true);
+ store.addResults(3, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addCanceledResults(0, 3);
+ QCOMPARE(store.count(), 2);
+ }
+
+ {
+ ResultStore<int> store;
+ store.setFilterMode(true);
+ store.addResults(3, &vec1);
+ QCOMPARE(store.count(), 0);
+
+ store.addCanceledResults(0, 3);
+ QCOMPARE(store.count(), 2); // results at 3 and 4 become available at index 0, 1
+
+ store.addResult(5, &int0);
+ QCOMPARE(store.count(), 3);// result 5 becomes available at index 2
+ }
+
+ {
+ ResultStore<int> store;
+ store.addResult(1, &int0);
+ store.addResult(3, &int0);
+ store.addResults(6, &vec0);
+ QCOMPARE(store.contains(0), false);
+ QCOMPARE(store.contains(1), true);
+ QCOMPARE(store.contains(2), false);
+ QCOMPARE(store.contains(3), true);
+ QCOMPARE(store.contains(4), false);
+ QCOMPARE(store.contains(5), false);
+ QCOMPARE(store.contains(6), true);
+ QCOMPARE(store.contains(7), true);
+ }
+
+ {
+ ResultStore<int> store;
+ store.setFilterMode(true);
+ store.addResult(1, &int0);
+ store.addResult(3, &int0);
+ store.addResults(6, &vec0);
+ QCOMPARE(store.contains(0), false);
+ QCOMPARE(store.contains(1), false);
+ QCOMPARE(store.contains(2), false);
+ QCOMPARE(store.contains(3), false);
+ QCOMPARE(store.contains(4), false);
+ QCOMPARE(store.contains(5), false);
+ QCOMPARE(store.contains(6), false);
+ QCOMPARE(store.contains(7), false);
+
+ store.addCanceledResult(0);
+ store.addCanceledResult(2);
+ store.addCanceledResults(4, 2);
+
+ QCOMPARE(store.contains(0), true);
+ QCOMPARE(store.contains(1), true);
+ QCOMPARE(store.contains(2), true);
+ QCOMPARE(store.contains(3), true);
+ QCOMPARE(store.contains(4), false);
+ QCOMPARE(store.contains(5), false);
+ QCOMPARE(store.contains(6), false);
+ QCOMPARE(store.contains(7), false);
+ }
+ {
+ ResultStore<int> store;
+ store.setFilterMode(true);
+ store.addCanceledResult(0);
+ QCOMPARE(store.contains(0), false);
+
+ store.addResult(1, &int0);
+ QCOMPARE(store.contains(0), true);
+ QCOMPARE(store.contains(1), false);
+ }
+}
+
+void tst_QFuture::future()
+{
+ // default constructors
+ QFuture<int> intFuture;
+ intFuture.waitForFinished();
+ QFuture<QString> stringFuture;
+ stringFuture.waitForFinished();
+ QFuture<void> voidFuture;
+ voidFuture.waitForFinished();
+ QFuture<void> defaultVoidFuture;
+ defaultVoidFuture.waitForFinished();
+
+ // copy constructor
+ QFuture<int> intFuture2(intFuture);
+ QFuture<void> voidFuture2(defaultVoidFuture);
+
+ // assigmnent operator
+ intFuture2 = QFuture<int>();
+ voidFuture2 = QFuture<void>();
+
+ // state
+ QCOMPARE(intFuture2.isStarted(), true);
+ QCOMPARE(intFuture2.isFinished(), true);
+}
+
+class IntResult : public QFutureInterface<int>
+{
+public:
+ QFuture<int> run()
+ {
+ this->reportStarted();
+ QFuture<int> future = QFuture<int>(this);
+
+ int res = 10;
+ reportFinished(&res);
+ return future;
+ }
+};
+
+int value = 10;
+
+class VoidResult : public QFutureInterfaceBase
+{
+public:
+ QFuture<void> run()
+ {
+ this->reportStarted();
+ QFuture<void> future = QFuture<void>(this);
+ reportFinished();
+ return future;
+ }
+};
+
+void tst_QFuture::futureInterface()
+{
+ {
+ QFuture<void> future;
+ {
+ QFutureInterface<void> i;
+ i.reportStarted();
+ future = i.future();
+ i.reportFinished();
+ }
+ }
+ {
+ QFuture<int> future;
+ {
+ QFutureInterface<int> i;
+ i.reportStarted();
+ i.reportResult(10);
+ future = i.future();
+ i.reportFinished();
+ }
+ QCOMPARE(future.resultAt(0), 10);
+ }
+
+ {
+ QFuture<int> intFuture;
+
+ QCOMPARE(intFuture.isStarted(), true);
+ QCOMPARE(intFuture.isFinished(), true);
+
+ IntResult result;
+
+ result.reportStarted();
+ intFuture = result.future();
+
+ QCOMPARE(intFuture.isStarted(), true);
+ QCOMPARE(intFuture.isFinished(), false);
+
+ result.reportFinished(&value);
+
+ QCOMPARE(intFuture.isStarted(), true);
+ QCOMPARE(intFuture.isFinished(), true);
+
+ int e = intFuture.result();
+
+ QCOMPARE(intFuture.isStarted(), true);
+ QCOMPARE(intFuture.isFinished(), true);
+ QCOMPARE(intFuture.isCanceled(), false);
+
+ QCOMPARE(e, value);
+ intFuture.waitForFinished();
+
+ IntResult intAlgo;
+ intFuture = intAlgo.run();
+ QFuture<int> intFuture2(intFuture);
+ QCOMPARE(intFuture.result(), value);
+ QCOMPARE(intFuture2.result(), value);
+ intFuture.waitForFinished();
+
+ VoidResult a;
+ a.run().waitForFinished();
+ }
+}
+
+template <typename T>
+void testRefCounting()
+{
+ QFutureInterface<T> interface;
+ QCOMPARE(int(interface.d->refCount), 1);
+
+ {
+ interface.reportStarted();
+
+ QFuture<T> f = interface.future();
+ QCOMPARE(int(interface.d->refCount), 2);
+
+ QFuture<T> f2(f);
+ QCOMPARE(int(interface.d->refCount), 3);
+
+ QFuture<T> f3;
+ f3 = f2;
+ QCOMPARE(int(interface.d->refCount), 4);
+
+ interface.reportFinished(0);
+ QCOMPARE(int(interface.d->refCount), 4);
+ }
+
+ QCOMPARE(int(interface.d->refCount), 1);
+}
+
+void tst_QFuture::refcounting()
+{
+ testRefCounting<int>();
+}
+
+void tst_QFuture::cancel()
+{
+ {
+ QFuture<void> f;
+ QFutureInterface<void> result;
+
+ result.reportStarted();
+ f = result.future();
+ QVERIFY(f.isCanceled() == false);
+ result.reportCanceled();
+ QVERIFY(f.isCanceled());
+ result.reportFinished();
+ QVERIFY(f.isCanceled());
+ f.waitForFinished();
+ QVERIFY(f.isCanceled());
+ }
+
+ // Cancel from the QFuture side and test if the result
+ // interface detects it.
+ {
+ QFutureInterface<void> result;
+
+ QFuture<void> f;
+ QVERIFY(f.isStarted() == true);
+
+ result.reportStarted();
+ f = result.future();
+
+ QVERIFY(f.isStarted() == true);
+
+ QVERIFY(result.isCanceled() == false);
+ f.cancel();
+
+ QVERIFY(result.isCanceled());
+
+ result.reportFinished();
+ }
+
+ // Test that finished futures can be canceled.
+ {
+ QFutureInterface<void> result;
+
+ QFuture<void> f;
+ QVERIFY(f.isStarted() == true);
+
+ result.reportStarted();
+ f = result.future();
+
+ QVERIFY(f.isStarted() == true);
+
+ result.reportFinished();
+
+ f.cancel();
+
+ QVERIFY(result.isCanceled());
+ QVERIFY(f.isCanceled());
+ }
+
+ // Results reported after canceled is called should not be propagated.
+ {
+
+ QFutureInterface<int> futureInterface;
+ futureInterface.reportStarted();
+ QFuture<int> f = futureInterface.future();
+
+ int result = 0;
+ futureInterface.reportResult(&result);
+ result = 1;
+ futureInterface.reportResult(&result);
+ f.cancel();
+ result = 2;
+ futureInterface.reportResult(&result);
+ result = 3;
+ futureInterface.reportResult(&result);
+ futureInterface.reportFinished();
+ QCOMPARE(f.results(), QList<int>());
+ }
+}
+
+void tst_QFuture::statePropagation()
+{
+ QFuture<void> f1;
+ QFuture<void> f2;
+
+ QCOMPARE(f1.isStarted(), true);
+
+ QFutureInterface<void> result;
+ result.reportStarted();
+ f1 = result.future();
+
+ f2 = f1;
+
+ QCOMPARE(f2.isStarted(), true);
+
+ result.reportCanceled();
+
+ QCOMPARE(f2.isStarted(), true);
+ QCOMPARE(f2.isCanceled(), true);
+
+ QFuture<void> f3 = f2;
+
+ QCOMPARE(f3.isStarted(), true);
+ QCOMPARE(f3.isCanceled(), true);
+
+ result.reportFinished();
+
+ QCOMPARE(f2.isStarted(), true);
+ QCOMPARE(f2.isCanceled(), true);
+
+ QCOMPARE(f3.isStarted(), true);
+ QCOMPARE(f3.isCanceled(), true);
+}
+
+/*
+ Tests that a QFuture can return multiple results.
+*/
+void tst_QFuture::multipleResults()
+{
+ IntResult a;
+ a.reportStarted();
+ QFuture<int> f = a.future();
+
+ QFuture<int> copy = f;
+ int result;
+
+ result = 1;
+ a.reportResult(&result);
+ QCOMPARE(f.resultAt(0), 1);
+
+ result = 2;
+ a.reportResult(&result);
+ QCOMPARE(f.resultAt(1), 2);
+
+ result = 3;
+ a.reportResult(&result);
+
+ result = 4;
+ a.reportFinished(&result);
+
+ QCOMPARE(f.results(), QList<int>() << 1 << 2 << 3 << 4);
+
+ // test foreach
+ QList<int> fasit = QList<int>() << 1 << 2 << 3 << 4;
+ {
+ QList<int> results;
+ foreach(int result, f)
+ results.append(result);
+ QCOMPARE(results, fasit);
+ }
+ {
+ QList<int> results;
+ foreach(int result, copy)
+ results.append(result);
+ QCOMPARE(results, fasit);
+ }
+}
+
+/*
+ Test out-of-order result reporting using indexes
+*/
+void tst_QFuture::indexedResults()
+{
+ {
+ QFutureInterface<QChar> Interface;
+ QFuture<QChar> f;
+ QVERIFY(f.isStarted() == true);
+
+ Interface.reportStarted();
+ f = Interface.future();
+
+ QVERIFY(f.isStarted() == true);
+
+ QChar result;
+
+ result = 'B';
+ Interface.reportResult(&result, 1);
+
+ QCOMPARE(f.resultAt(1), result);
+
+ result = 'A';
+ Interface.reportResult(&result, 0);
+ QCOMPARE(f.resultAt(0), result);
+
+ result = 'C';
+ Interface.reportResult(&result); // no index
+ QCOMPARE(f.resultAt(2), result);
+
+ Interface.reportFinished();
+
+ QCOMPARE(f.results(), QList<QChar>() << 'A' << 'B' << 'C');
+ }
+
+ {
+ // Test result reporting with a missing result in the middle
+ QFutureInterface<int> Interface;
+ Interface.reportStarted();
+ QFuture<int> f = Interface.future();
+ int result;
+
+ result = 0;
+ Interface.reportResult(&result, 0);
+ QVERIFY(f.isResultReadyAt(0));
+ QCOMPARE(f.resultAt(0), 0);
+
+ result = 3;
+ Interface.reportResult(&result, 3);
+ QVERIFY(f.isResultReadyAt(3));
+ QCOMPARE(f.resultAt(3), 3);
+
+ result = 2;
+ Interface.reportResult(&result, 2);
+ QVERIFY(f.isResultReadyAt(2));
+ QCOMPARE(f.resultAt(2), 2);
+
+ result = 4;
+ Interface.reportResult(&result); // no index
+ QVERIFY(f.isResultReadyAt(4));
+ QCOMPARE(f.resultAt(4), 4);
+
+ Interface.reportFinished();
+
+ QCOMPARE(f.results(), QList<int>() << 0 << 2 << 3 << 4);
+ }
+}
+
+void tst_QFuture::progress()
+{
+ QFutureInterface<QChar> result;
+ QFuture<QChar> f;
+
+ QCOMPARE (f.progressValue(), 0);
+
+ result.reportStarted();
+ f = result.future();
+
+ QCOMPARE (f.progressValue(), 0);
+
+ result.setProgressValue(50);
+
+ QCOMPARE (f.progressValue(), 50);
+
+ result.reportFinished();
+
+ QCOMPARE (f.progressValue(), 50);
+}
+
+void tst_QFuture::progressText()
+{
+ QFutureInterface<void> i;
+ i.reportStarted();
+ QFuture<void> f = i.future();
+
+ QCOMPARE(f.progressText(), QLatin1String(""));
+ i.setProgressValueAndText(1, QLatin1String("foo"));
+ QCOMPARE(f.progressText(), QLatin1String("foo"));
+ i.reportFinished();
+}
+
+/*
+ Test that results reported after finished are ignored.
+*/
+void tst_QFuture::resultsAfterFinished()
+{
+ {
+ IntResult a;
+ a.reportStarted();
+ QFuture<int> f = a.future();
+ int result;
+
+ QCOMPARE(f.resultCount(), 0);
+
+ result = 1;
+ a.reportResult(&result);
+ QCOMPARE(f.resultAt(0), 1);
+
+ a.reportFinished();
+
+ QCOMPARE(f.resultAt(0), 1);
+ QCOMPARE(f.resultCount(), 1);
+ result = 2;
+ a.reportResult(&result);
+ QCOMPARE(f.resultCount(), 1);
+ }
+ // cancel it
+ {
+ IntResult a;
+ a.reportStarted();
+ QFuture<int> f = a.future();
+ int result;
+
+ QCOMPARE(f.resultCount(), 0);
+
+ result = 1;
+ a.reportResult(&result);
+ QCOMPARE(f.resultAt(0), 1);
+ QCOMPARE(f.resultCount(), 1);
+
+ a.reportCanceled();
+
+ QCOMPARE(f.resultAt(0), 1);
+ QCOMPARE(f.resultCount(), 1);
+
+ result = 2;
+ a.reportResult(&result);
+ a.reportFinished();
+ }
+}
+
+void tst_QFuture::resultsAsList()
+{
+ IntResult a;
+ a.reportStarted();
+ QFuture<int> f = a.future();
+
+ int result;
+ result = 1;
+ a.reportResult(&result);
+ result = 2;
+ a.reportResult(&result);
+
+ a.reportFinished();
+
+ QList<int> results = f.results();
+ QCOMPARE(results, QList<int>() << 1 << 2);
+}
+
+/*
+ Test that QFuture<T> can be implicitly converted to T
+*/
+void tst_QFuture::implicitConversions()
+{
+ QFutureInterface<QString> iface;
+ iface.reportStarted();
+
+ QFuture<QString> f(&iface);
+
+ const QString input("FooBar 2000");
+ iface.reportFinished(&input);
+
+ const QString result = f;
+ QCOMPARE(result, input);
+ QCOMPARE(QString(f), input);
+ QCOMPARE(static_cast<QString>(f), input);
+}
+
+void tst_QFuture::iterators()
+{
+ {
+ QFutureInterface<int> e;
+ e.reportStarted();
+ QFuture<int> f = e.future();
+
+ int result;
+ result = 1;
+ e.reportResult(&result);
+ result = 2;
+ e.reportResult(&result);
+ result = 3;
+ e.reportResult(&result);
+ e.reportFinished();
+
+ QList<int> results;
+ QFutureIterator<int> i(f);
+ while (i.hasNext()) {
+ results.append(i.next());
+ }
+
+ QCOMPARE(results, f.results());
+
+ QFuture<int>::const_iterator i1 = f.begin(), i2 = i1 + 1;
+ QFuture<int>::const_iterator c1 = i1, c2 = c1 + 1;
+
+ QVERIFY(i1 == i1);
+ QVERIFY(i1 == c1);
+ QVERIFY(c1 == i1);
+ QVERIFY(c1 == c1);
+ QVERIFY(i2 == i2);
+ QVERIFY(i2 == c2);
+ QVERIFY(c2 == i2);
+ QVERIFY(c2 == c2);
+
+ QVERIFY(i1 != i2);
+ QVERIFY(i1 != c2);
+ QVERIFY(c1 != i2);
+ QVERIFY(c1 != c2);
+ QVERIFY(i2 != i1);
+ QVERIFY(i2 != c1);
+ QVERIFY(c2 != i1);
+ QVERIFY(c2 != c1);
+
+ int x1 = *i1;
+ Q_UNUSED(x1);
+ int x2 = *i2;
+ Q_UNUSED(x2);
+ int y1 = *c1;
+ Q_UNUSED(y1);
+ int y2 = *c2;
+ Q_UNUSED(y2);
+ }
+
+ {
+ QFutureInterface<QString> e;
+ e.reportStarted();
+ QFuture<QString> f = e.future();
+
+ e.reportResult(QString("one"));
+ e.reportResult(QString("two"));
+ e.reportResult(QString("three"));
+ e.reportFinished();
+
+ QList<QString> results;
+ QFutureIterator<QString> i(f);
+ while (i.hasNext()) {
+ results.append(i.next());
+ }
+
+ QCOMPARE(results, f.results());
+
+ QFuture<QString>::const_iterator i1 = f.begin(), i2 = i1 + 1;
+ QFuture<QString>::const_iterator c1 = i1, c2 = c1 + 1;
+
+ QVERIFY(i1 == i1);
+ QVERIFY(i1 == c1);
+ QVERIFY(c1 == i1);
+ QVERIFY(c1 == c1);
+ QVERIFY(i2 == i2);
+ QVERIFY(i2 == c2);
+ QVERIFY(c2 == i2);
+ QVERIFY(c2 == c2);
+
+ QVERIFY(i1 != i2);
+ QVERIFY(i1 != c2);
+ QVERIFY(c1 != i2);
+ QVERIFY(c1 != c2);
+ QVERIFY(i2 != i1);
+ QVERIFY(i2 != c1);
+ QVERIFY(c2 != i1);
+ QVERIFY(c2 != c1);
+
+ QString x1 = *i1;
+ QString x2 = *i2;
+ QString y1 = *c1;
+ QString y2 = *c2;
+
+ QCOMPARE(x1, y1);
+ QCOMPARE(x2, y2);
+
+ int i1Size = i1->size();
+ int i2Size = i2->size();
+ int c1Size = c1->size();
+ int c2Size = c2->size();
+
+ QCOMPARE(i1Size, c1Size);
+ QCOMPARE(i2Size, c2Size);
+ }
+
+ {
+ const int resultCount = 20;
+
+ QFutureInterface<int> e;
+ e.reportStarted();
+ QFuture<int> f = e.future();
+
+ for (int i = 0; i < resultCount; ++i) {
+ e.reportResult(i);
+ }
+
+ e.reportFinished();
+
+ {
+ QFutureIterator<int> it(f);
+ QFutureIterator<int> it2(it);
+ }
+
+ {
+ QFutureIterator<int> it(f);
+
+ for (int i = 0; i < resultCount - 1; ++i) {
+ QVERIFY(it.hasNext());
+ QCOMPARE(it.peekNext(), i);
+ QCOMPARE(it.next(), i);
+ }
+
+ QVERIFY(it.hasNext());
+ QCOMPARE(it.peekNext(), resultCount - 1);
+ QCOMPARE(it.next(), resultCount - 1);
+ QVERIFY(it.hasNext() == false);
+ }
+
+ {
+ QFutureIterator<int> it(f);
+ QVERIFY(it.hasNext());
+ it.toBack();
+ QVERIFY(it.hasNext() == false);
+ it.toFront();
+ QVERIFY(it.hasNext());
+ }
+ }
+}
+
+class SignalSlotObject : public QObject
+{
+Q_OBJECT
+public:
+ SignalSlotObject()
+ : finishedCalled(false),
+ canceledCalled(false),
+ rangeBegin(0),
+ rangeEnd(0) { }
+
+public slots:
+ void finished()
+ {
+// qDebug() << "finished called";
+ finishedCalled = true;
+ }
+
+ void canceled()
+ {
+// qDebug() << "canceled called";
+ canceledCalled = true;
+ }
+
+ void resultReady(int index)
+ {
+// qDebug() << "result" << index << "ready";
+ results.insert(index);
+ }
+
+ void progressRange(int begin, int end)
+ {
+// qDebug() << "progress range" << begin << end;
+ rangeBegin = begin;
+ rangeEnd = end;
+ }
+
+ void progress(int progress)
+ {
+// qDebug() << "progress" << progress;
+ reportedProgress.insert(progress);
+ }
+public:
+ bool finishedCalled;
+ bool canceledCalled;
+ QSet<int> results;
+ int rangeBegin;
+ int rangeEnd;
+ QSet<int> reportedProgress;
+};
+
+void tst_QFuture::pause()
+{
+ QFutureInterface<void> Interface;
+
+ Interface.reportStarted();
+ QFuture<void> f = Interface.future();
+
+ QVERIFY(Interface.isPaused() == false);
+ f.pause();
+ QVERIFY(Interface.isPaused() == true);
+ f.resume();
+ QVERIFY(Interface.isPaused() == false);
+ f.togglePaused();
+ QVERIFY(Interface.isPaused() == true);
+ f.togglePaused();
+ QVERIFY(Interface.isPaused() == false);
+
+ Interface.reportFinished();
+}
+
+const int resultCount = 1000;
+
+class ResultObject : public QObject
+{
+Q_OBJECT
+public slots:
+ void resultReady(int)
+ {
+
+ }
+public:
+};
+
+// Test that that the isPaused() on future result interface returns true
+// if we report a lot of results that are not handled.
+void tst_QFuture::throttling()
+{
+ {
+ QFutureInterface<void> i;
+
+ i.reportStarted();
+ QFuture<void> f = i.future();
+
+ QVERIFY(i.isThrottled() == false);
+
+ i.setThrottled(true);
+ QVERIFY(i.isThrottled());
+
+ i.setThrottled(false);
+ QVERIFY(i.isThrottled() == false);
+
+ i.setThrottled(true);
+ QVERIFY(i.isThrottled());
+
+ i.reportFinished();
+ }
+/*
+ QFutureInterface<int> *Interface = new QFutureInterface<int>();
+ Interface.reportStarted();
+ QFuture<int> f = QFuture<int>(Interface);
+
+ ResultObject object;
+ f.connectTo(ThrottledResultReadyAtSignal, &object, SLOT(resultReady(int)), Qt::DirectConnection);
+
+ for (int i = 0; i < 100; ++i)
+ Interface.reportResult(&i);
+
+ QVERIFY(Interface.isPaused() == true);
+
+ // read the results, this should resume the task.
+ for (int i = 0; i < 100; ++i)
+ f.throttledResult(i);
+
+ QVERIFY(Interface.isPaused() == false);
+ Interface.reportFinished();
+*/
+}
+
+void tst_QFuture::voidConversions()
+{
+ QFutureInterface<int> iface;
+ iface.reportStarted();
+
+ QFuture<int> intFuture(&iface);
+
+ int value = 10;
+ iface.reportFinished(&value);
+
+ QFuture<void> voidFuture(intFuture);
+ voidFuture = intFuture;
+
+ QVERIFY(voidFuture == intFuture);
+}
+
+
+#ifndef QT_NO_EXCEPTIONS
+
+QFuture<void> createExceptionFuture()
+{
+ QFutureInterface<void> i;
+ i.reportStarted();
+ QFuture<void> f = i.future();
+
+ Exception e;
+ i.reportException(e);
+ i.reportFinished();
+ return f;
+}
+
+QFuture<int> createExceptionResultFuture()
+{
+ QFutureInterface<int> i;
+ i.reportStarted();
+ QFuture<int> f = i.future();
+ int r = 0;
+ i.reportResult(r);
+
+ Exception e;
+ i.reportException(e);
+ i.reportFinished();
+ return f;
+}
+
+class DerivedException : public Exception
+{
+public:
+ void raise() const { throw *this; }
+ Exception *clone() const { return new DerivedException(*this); }
+};
+
+QFuture<void> createDerivedExceptionFuture()
+{
+ QFutureInterface<void> i;
+ i.reportStarted();
+ QFuture<void> f = i.future();
+
+ DerivedException e;
+ i.reportException(e);
+ i.reportFinished();
+ return f;
+}
+
+void tst_QFuture::exceptions()
+{
+
+// test throwing from waitForFinished
+{
+ QFuture<void> f = createExceptionFuture();
+ bool caught = false;
+ try {
+ f.waitForFinished();
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+// test result()
+{
+ QFuture<int> f = createExceptionResultFuture();
+ bool caught = false;
+ try {
+ f.result();
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+// test result() and destroy
+{
+ bool caught = false;
+ try {
+ createExceptionResultFuture().result();
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+// test results()
+{
+ QFuture<int> f = createExceptionResultFuture();
+ bool caught = false;
+ try {
+ f.results();
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+// test foreach
+{
+ QFuture<int> f = createExceptionResultFuture();
+ bool caught = false;
+ try {
+ foreach (int e, f.results()) {
+ Q_UNUSED(e);
+ QFAIL("did not get exception");
+ }
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+// catch derived exceptions
+{
+ bool caught = false;
+ try {
+ createDerivedExceptionFuture().waitForFinished();
+ } catch (Exception &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+{
+ bool caught = false;
+ try {
+ createDerivedExceptionFuture().waitForFinished();
+ } catch (DerivedException &) {
+ caught = true;
+ }
+ QVERIFY(caught);
+}
+
+}
+
+#endif // QT_NO_EXCEPTIONS
+
+#include "tst_qfuture.moc"
+
+#else
+QTEST_NOOP_MAIN
+#endif