test: add tests for color

Author: cdoublev

lib/parsers.test.js

@@ -224,6 +224,47 @@ describe('parseString', () => {
   it.todo('test');
 });
 describe('parseColor', () => {
+  it('returns undefined for invalid values', () => {
+    const invalid = [
+      'invalid',
+      '#ffz',
+      '#1',
+      '#12',
+      '#12345',
+      '#1234567',
+      '#123456789',
+      'rg(0, 0, 0)',
+      'rgbo(0, 0, 0)',
+      'rgb(0, 0)',
+      'rgb(0, 0 0)',
+      'rgb(0%, 0, 0)',
+      'rgb(0, 1deg, 1px)',
+      'rgba(0, 1deg, 1px, invalid)',
+      'rgba(0 0 0 0)',
+      'rgba(0, 0, 0 / 0)',
+      'hs(0, 0, 0)',
+      'hslo(0, 0, 0)',
+      'hsl(0, 0)',
+      'hsl(0, 0 0)',
+      'hsl(0%, 0, 0)',
+      'hsl(0, 1deg, 1px)',
+      'hsla(0, 1deg, 1px, invalid)',
+      'hsla(0 0 0 0)',
+      'hsla(0, 0, 0 / 0)',
+    ];
+    invalid.forEach(input => expect(parsers.parseColor(input)).toBeUndefined());
+  });
+  it('resolves with lowercased color name or function name', () => {
+    expect(parsers.parseColor('RED')).toBe('red');
+    expect(parsers.parseColor('RGb(0, 0, 0)')).toBe('rgb(0, 0, 0)');
+  });
+  it('should convert hex to rgba values', () => {
+    expect(parsers.parseColor('#F00')).toBe('rgb(255, 0, 0)');
+    expect(parsers.parseColor('#0f06')).toBe('rgba(0, 255, 0, 0.4)');
+    expect(parsers.parseColor('#0000ff')).toBe('rgb(0, 0, 255)');
+    expect(parsers.parseColor('#ff00ffff')).toBe('rgb(255, 0, 255)');
+    expect(parsers.parseColor('#ff00ff66')).toBe('rgba(255, 0, 255, 0.4)');
+  });
   it('should convert hsl to rgb values', () => {
     let input = 'hsla(0, 1%, 2%)';
     let output = parsers.parseColor(input);
@@ -236,8 +277,25 @@ describe('parseColor', () => {
 
     expect(output).toEqual('rgba(5, 5, 5, 0.5)');
   });
-
-  it.todo('Add more tests');
+  it('clamps overflowing rgb values', () => {
+    expect(parsers.parseColor('rgb(300, 300, 300, 2)')).toBe('rgb(255, 255, 255)');
+    expect(parsers.parseColor('rgb(-1, -1, -1, -1)')).toBe('rgba(0, 0, 0, 0)');
+    expect(parsers.parseColor('hsl(540, 100%, 50%)')).toBe('rgb(0, 255, 255)');
+    expect(parsers.parseColor('hsla(400, 200%, 200%, 200%)')).toBe('rgb(255, 255, 255)');
+    expect(parsers.parseColor('hsla(-20deg, -1%, -1%, -1%)')).toBe('rgba(0, 0, 0, 0)');
+  });
+  it('preserves precision', () => {
+    expect(parsers.parseColor('rgba(245.5, 245.5, 0, 50.1%)')).toBe('rgba(246, 246, 0, 0.5)');
+    expect(parsers.parseColor('rgba(245.5, 245.5, 0, 49.9%)')).toBe('rgba(246, 246, 0, 0.498)');
+  });
+  it('works with calc()', () => {
+    expect(parsers.parseColor('rgb(calc(0 + 255), 0, calc(0 + calc(0 + 255)))')).toBe(
+      'rgb(255, 0, 255)'
+    );
+    expect(parsers.parseColor('hsl(calc(0 + 300), 100%, calc(0% + calc(0% + 50%)))')).toBe(
+      'rgb(255, 0, 255)'
+    );
+  });
 });
 describe('dashedToCamelCase', () => {
   it.todo('test');