Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test3/hexToRGB/hexToRGB.js

@@ -0,0 +1,20 @@
+const hexToRGB = hex => {
+let alpha = false,
+h = hex.slice(hex.startsWith('#') ? 1 : 0);
+if (h.length === 3) h = [...h].map(x => x + x).join('');
+else if (h.length === 8) alpha = true;
+h = parseInt(h, 16);
+return (
+'rgb' +
+(alpha ? 'a' : '') +
+'(' +
+(h >>> (alpha ? 24 : 16)) +
+', ' +
+((h & (alpha ? 0x00ff0000 : 0x00ff00)) >>> (alpha ? 16 : 8)) +
+', ' +
+((h & (alpha ? 0x0000ff00 : 0x0000ff)) >>> (alpha ? 8 : 0)) +
+(alpha ? `, ${h & 0x000000ff}` : '') +
+')'
+);
+};
+module.exports = hexToRGB;