kirigami/autotests/tst_colorutils.qml

0001 /*
0002  *  SPDX-FileCopyrightText: 2023 Arjen Hiemstra <ahiemstra@heimr.nl>
0003  *
0004  *  SPDX-License-Identifier: LGPL-2.0-or-later
0005  */
0006
0007 import QtQuick
0008 import QtTest
0009 import org.kde.kirigami as Kirigami
0010
0011 TestCase {
0012     id: testCase
0013     name: "ColorUtilsTest"
0014
0015     function test_linear_interpolation_data() {
0016         return [
0017             {tag: "black to white", from: Qt.rgba(0.0, 0.0, 0.0), to: Qt.rgba(1.0, 1.0, 1.0), amount: 0.5, expected: Qt.rgba(0.5, 0.5, 0.5)},
0018             {tag: "white to black", from: Qt.rgba(1.0, 1.0, 1.0), to: Qt.rgba(0.0, 0.0, 0.0), amount: 0.5, expected: Qt.rgba(0.5, 0.5, 0.5)},
0019             {tag: "red to white", from: Qt.rgba(1.0, 0.0, 0.0), to: Qt.rgba(1.0, 1.0, 1.0), amount: 0.5, expected: Qt.rgba(1.0, 0.5, 0.5)},
0020             {tag: "green to white", from: Qt.rgba(0.0, 0.0, 1.0), to: Qt.rgba(1.0, 1.0, 1.0), amount: 0.5, expected: Qt.rgba(0.5, 0.5, 1.0)},
0021             {tag: "transparent to black", from: Qt.rgba(0.0, 0.0, 0.0, 0.0), to: Qt.rgba(0.0, 0.0, 0.0), amount: 0.5, expected: Qt.rgba(0.0, 0.0, 0.0, 0.5)},
0022             {tag: "transparent to white", from: Qt.rgba(0.0, 0.0, 0.0, 0.0), to: Qt.rgba(1.0, 1.0, 1.0), amount: 0.5, expected: Qt.rgba(0.5, 0.5, 0.5, 0.5)},
0023             // This would produce a pink color when not accounting for undefined hue when using white.
0024             {tag: "broken separator", from: Qt.color("#af384c"), to: Qt.color("white"), amount: 0.15, expected: Qt.color("#bb4f61")}
0025         ]
0026     }
0027
0028     function test_linear_interpolation(data) {
0029         let result = Kirigami.ColorUtils.linearInterpolation(data.from, data.to, data.amount)
0030         let expected = data.expected
0031
0032         // According to the documentation, fuzzyCompare() should be able to handle
0033         // color values but it seems to just do string comparison. So do a manual
0034         // component-wise comparison instead.
0035         fuzzyCompare(result.r, expected.r, 0.001, "Colors are not the same, Actual: " + result + " Expected: " + expected + ", component is red")
0036         fuzzyCompare(result.g, expected.g, 0.001, "Colors are not the same, Actual: " + result + " Expected: " + expected + ", component is green")
0037         fuzzyCompare(result.b, expected.b, 0.001, "Colors are not the same, Actual: " + result + " Expected: " + expected + ", component is blue")
0038         fuzzyCompare(result.a, expected.a, 0.001, "Colors are not the same, Actual: " + result + " Expected: " + expected + ", component is alpha")
0039     }
0040 }
0041