TestCase: Fix colors comparison in fuzzyCompare()

fuzzyCompare() messed up the arguments and compared the first color
argument with itself (ignoring the second color).

Fixes: QTBUG-91694
Change-Id: I86453c937e27a2112f8375b144ca21a9d088f017
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit 35a0c2552f17e40d3584af422a3c5fe75c700d0f)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

3 files changed, 75 insertions, 0 deletions

diff --git a/tests/auto/qmltest/CMakeLists.txt b/tests/auto/qmltest/CMakeLists.txt
index ac950263b5..fe402859a4 100644
--- a/tests/auto/qmltest/CMakeLists.txt
+++ b/tests/auto/qmltest/CMakeLists.txt
@@ -7,6 +7,7 @@ add_subdirectory(buttonclick)
 add_subdirectory(createbenchmark)
 add_subdirectory(events)
 add_subdirectory(fontloader)
+add_subdirectory(fuzzycompare)
 add_subdirectory(gradient)
 add_subdirectory(image)
 add_subdirectory(itemgrabber)
diff --git a/tests/auto/qmltest/fuzzycompare/CMakeLists.txt b/tests/auto/qmltest/fuzzycompare/CMakeLists.txt
new file mode 100644
index 0000000000..b9b548d125
--- /dev/null
+++ b/tests/auto/qmltest/fuzzycompare/CMakeLists.txt
@@ -0,0 +1,12 @@
+# Generated from fuzzycompare.pro
+
+#####################################################################
+## fuzzycompare Test:
+#####################################################################
+
+qt_internal_add_test(fuzzycompare
+    GUI
+    QMLTEST
+    PUBLIC_LIBRARIES
+        Qt::Gui
+)
diff --git a/tests/auto/qmltest/fuzzycompare/tst_FuzzyCompare.qml b/tests/auto/qmltest/fuzzycompare/tst_FuzzyCompare.qml
new file mode 100644
index 0000000000..3edc9d48c6
--- /dev/null
+++ b/tests/auto/qmltest/fuzzycompare/tst_FuzzyCompare.qml
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 Alexander Akulich <akulichalexander@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+import QtTest 1.0
+
+TestCase {
+    name: "FuzzyCompare"
+
+    function test_differentColors()
+    {
+        const color1 = Qt.rgba(0, 0, 0, 0)
+        const color2 = Qt.rgba(1, 1, 1, 1)
+        expectFail("", "The colors are very different so fuzzyCompare should fail")
+        fuzzyCompare(color1, color2, 1)
+    }
+}