negative value tests

dequelabs · Apr 25, 2024 · adff13d · adff13d
1 parent 7e14167
commit adff13d
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diff --git a/lib/commons/color/color.js b/lib/commons/color/color.js
@@ -1,7 +1,7 @@
 import { Colorjs, ArrayFrom } from '../../core/imports';
 
 const hexRegex = /^#[0-9a-f]{3,8}$/i;
-const hslRegex = /hsl\(\s*([\d.]+)(rad|turn)/;
+const hslRegex = /hsl\(\s*([-\d.]+)(rad|turn)/;
 
 /**
  * @class Color

diff --git a/test/commons/color/color.js b/test/commons/color/color.js
@@ -166,6 +166,15 @@ describe('color.Color', () => {
         assert.equal(c.alpha, 1);
       });
 
+      it('supports negative rad on hue', () => {
+        const c = new Color();
+        c.parseColorFnString('hsl(-3.49rad, 40%, 50%)');
+        assert.equal(c.red, 77);
+        assert.equal(c.green, 179);
+        assert.equal(c.blue, 145);
+        assert.equal(c.alpha, 1);
+      });
+
       it('supports turn on hue', () => {
         const c = new Color();
         c.parseColorFnString('hsl(0.444turn, 40%, 50%)');
@@ -174,6 +183,15 @@ describe('color.Color', () => {
         assert.equal(c.blue, 144);
         assert.equal(c.alpha, 1);
       });
+
+      it('supports negative turn on hue', () => {
+        const c = new Color();
+        c.parseColorFnString('hsl(-0.556turn, 40%, 50%)');
+        assert.equal(c.red, 77);
+        assert.equal(c.green, 179);
+        assert.equal(c.blue, 144);
+        assert.equal(c.alpha, 1);
+      });
     });
 
     describe('with hwb()', () => {