qt5base-lts/tests/auto/testlib/selftests/float/tst_float.cpp
Jason McDonald 01ece201ab Split subtest selftest
This test was attempting to verify two completely unrelated things, so
this commit splits it into two tests.

Also, printf calls are replaced by qDebug so that the test does not
bypass the testlib loggers.

Change-Id: I1a202af38ce2c69690a32d93405ba604ec6cabee
Reviewed-on: http://codereview.qt-project.org/5178
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2011-09-20 08:46:18 +02:00

114 lines
3.2 KiB
C++

/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
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** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore>
#include <QtTest/QtTest>
#include <QDebug>
class tst_float: public QObject
{
Q_OBJECT
private slots:
void floatComparisons() const;
void floatComparisons_data() const;
void compareFloatTests() const;
void compareFloatTests_data() const;
};
void tst_float::floatComparisons() const
{
QFETCH(float, operandLeft);
QFETCH(float, operandRight);
QCOMPARE(operandLeft, operandRight);
}
void tst_float::floatComparisons_data() const
{
QTest::addColumn<float>("operandLeft");
QTest::addColumn<float>("operandRight");
QTest::newRow("should SUCCEED")
<< float(0)
<< float(0);
QTest::newRow("should FAIL")
<< float(1.00000)
<< float(3.00000);
QTest::newRow("should FAIL")
<< float(1.00000e-7f)
<< float(3.00000e-7f);
QTest::newRow("should FAIL")
<< float(100001)
<< float(100002);
}
void tst_float::compareFloatTests() const
{
QFETCH(float, t1);
// Create two more values
// t2 differs from t1 by 1 ppm (part per million)
// t3 differs from t1 by 200%
// we should consider that t1 == t2 and t1 != t3
const float t2 = t1 + (t1 / 1e6);
const float t3 = 3 * t1;
QCOMPARE(t1, t2);
/* Should FAIL. */
QCOMPARE(t1, t3);
}
void tst_float::compareFloatTests_data() const
{
QTest::addColumn<float>("t1");
QTest::newRow("1e0") << 1e0f;
QTest::newRow("1e-7") << 1e-7f;
QTest::newRow("1e+7") << 1e+7f;
}
QTEST_MAIN(tst_float)
#include "tst_float.moc"