[gnome-maps/wip/mlundblad/color-tests: 2/2] color: Add unit tests

[Marcus Lundblad <mlundblad src gnome org>]

commit eb6cd407f4608f3a5ca4b5376677b5bdb5d3bda2
Author: Marcus Lundblad <ml update uu se>
Date:   Tue May 19 23:31:22 2020 +0200

    color: Add unit tests

 tests/colorTests.js | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/meson.build   |  2 +-
 2 files changed, 72 insertions(+), 1 deletion(-)
---
diff --git a/tests/colorTests.js b/tests/colorTests.js
new file mode 100644
index 00000000..0c231cf1
--- /dev/null
+++ b/tests/colorTests.js
@@ -0,0 +1,71 @@
+/* -*- Mode: JS2; indent-tabs-mode: nil; js2-basic-offset: 4 -*- */
+/* vim: set et ts=4 sw=4: */
+/*
+ * Copyright (c) 2020 Marcus Lundblad
+ *
+ * GNOME Maps is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * GNOME Maps is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with GNOME Maps; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Marcus Lundblad <ml update uu se>
+ */
+
+const JsUnit = imports.jsUnit;
+
+const Color = imports.color;
+
+function main() {
+    parseColorTest();
+    relativeLuminanceTest();
+    contrastRatioTest();
+    getContrastingForegroundColorTest();
+}
+
+function parseColorTest() {
+    JsUnit.assertEquals(1.0, Color.parseColor('ff0000', 0));
+    JsUnit.assertEquals(1.0, Color.parseColor('00ff00', 1));
+    JsUnit.assertEquals(1.0, Color.parseColor('0000ff', 2));
+    JsUnit.assertEquals(0.0, Color.parseColor('000000', 0));
+    JsUnit.assertEquals(0.0, Color.parseColor('000000', 1));
+    JsUnit.assertEquals(0.0, Color.parseColor('000000', 2));
+    JsUnit.assertEquals(1.0/3.0, Color.parseColor('550000', 0));
+    JsUnit.assertEquals(1.0, Color.parseColor(undefined, 0, 1.0));
+    JsUnit.assertEquals(1.0, Color.parseColor(null, 0, 1.0));
+    JsUnit.assertEquals(1.0, Color.parseColor('', 0, 1.0));
+}
+
+function relativeLuminanceTest() {
+    JsUnit.assertEquals(0.0, Color.relativeLuminance('000000'));
+    JsUnit.assertEquals(1.0, Color.relativeLuminance('ffffff'));
+    JsUnit.assertEquals(0.2126, Color.relativeLuminance('ff0000'));
+    JsUnit.assertEquals(0.7152, Color.relativeLuminance('00ff00'));
+    JsUnit.assertEquals(0.0722, Color.relativeLuminance('0000ff'));
+    JsUnit.assertEquals(0.5855256521034803, Color.relativeLuminance('abcdef'));
+}
+
+function contrastRatioTest() {
+    JsUnit.assertEquals(21.0, Color.contrastRatio('000000', 'ffffff'));
+    JsUnit.assertEquals(21.0, Color.contrastRatio('ffffff', '000000'));
+    JsUnit.assertEquals(1.0, Color.contrastRatio('ffffff', 'ffffff'));
+    JsUnit.assertEquals(1.0, Color.contrastRatio('000000', '000000'));
+}
+
+function getContrastingForegroundColorTest() {
+    JsUnit.assertEquals('000000',
+                        Color.getContrastingForegroundColor('ffffff'));
+    JsUnit.assertEquals('ffffff',
+                        Color.getContrastingForegroundColor('000000'));
+    JsUnit.assertEquals('ffffff',
+                        Color.getContrastingForegroundColor('000088', '000000'));
+    JsUnit.assertEquals('dddddd',
+                        Color.getContrastingForegroundColor('000088', 'dddddd'));
+}
diff --git a/tests/meson.build b/tests/meson.build
index 947d3112..a80e13d5 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,4 +1,4 @@
-tests = ['utilsTest']
+tests = ['colorTest', 'utilsTest']
 
 foreach test : tests
   script_conf = configuration_data()