Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/toolkit/modules/tests/xpcshell/test_Color.js b/toolkit/modules/tests/xpcshell/test_Color.js
new file mode 100644
index 0000000000..f99de7072e
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_Color.js
@@ -0,0 +1,87 @@
+"use strict";
+
+const { Color } = ChromeUtils.importESModule(
+  "resource://gre/modules/Color.sys.mjs"
+);
+
+function run_test() {
+  testRelativeLuminance();
+  testUseBrightText();
+  testContrastRatio();
+  testIsContrastRatioAcceptable();
+}
+
+function testRelativeLuminance() {
+  let c = new Color(0, 0, 0);
+  Assert.equal(c.relativeLuminance, 0, "Black is not illuminating");
+
+  c = new Color(255, 255, 255);
+  Assert.equal(c.relativeLuminance, 1, "White is quite the luminant one");
+
+  c = new Color(142, 42, 142);
+  Assert.equal(
+    c.relativeLuminance,
+    0.09359705837110571,
+    "This purple is not that luminant"
+  );
+}
+
+function testUseBrightText() {
+  let c = new Color(0, 0, 0);
+  Assert.ok(
+    c.useBrightText,
+    "Black is bright, so bright text should be used here"
+  );
+
+  c = new Color(255, 255, 255);
+  Assert.ok(
+    !c.useBrightText,
+    "White is bright, so better not use bright colored text on it"
+  );
+}
+
+function testContrastRatio() {
+  let c = new Color(0, 0, 0);
+  let c2 = new Color(255, 255, 255);
+  Assert.equal(
+    c.contrastRatio(c2),
+    21,
+    "Contrast between black and white is max"
+  );
+  Assert.equal(c.contrastRatio(c), 1, "Contrast between equals is min");
+
+  let c3 = new Color(142, 42, 142);
+  Assert.equal(
+    c.contrastRatio(c3),
+    2.871941167422114,
+    "Contrast between black and purple shouldn't be very high"
+  );
+  Assert.equal(
+    c2.contrastRatio(c3),
+    7.312127503938331,
+    "Contrast between white and purple should be high"
+  );
+}
+
+function testIsContrastRatioAcceptable() {
+  // Let's assert what browser.js is doing for window frames.
+  let c = new Color(...[55, 156, 152]);
+  let c2 = new Color(0, 0, 0);
+  Assert.equal(c.r, 55, "Reds should match");
+  Assert.equal(c.g, 156, "Greens should match");
+  Assert.equal(c.b, 152, "Blues should match");
+  Assert.ok(
+    c.isContrastRatioAcceptable(c2),
+    "The blue is high contrast enough"
+  );
+  c2 = new Color(...[35, 65, 100]);
+  Assert.ok(
+    !c.isContrastRatioAcceptable(c2),
+    "The blue is not high contrast enough"
+  );
+  // But would it be high contrast enough at a lower conformance level?
+  Assert.ok(
+    c.isContrastRatioAcceptable(c2, "A"),
+    "The blue is high contrast enough when used as large text"
+  );
+}