1 files changed, 113 insertions, 0 deletions
diff --git a/tests/auto/testlib/selftests/float/tst_float.cpp b/tests/auto/testlib/selftests/float/tst_float.cpp
new file mode 100644
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+++ b/tests/auto/testlib/selftests/float/tst_float.cpp
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+/****************************************************************************
+**
+** 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.
+**
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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"