Add tests

Author: sonicdoe

package.json

@@ -12,7 +12,7 @@
   "author": "Jakob Krigovsky <[email protected]>",
   "repository": "sonicdoe/css-color-keywords",
   "scripts": {
-    "test": "standard"
+    "test": "standard && node test.js"
   },
   "devDependencies": {
     "standard": "^8.6.0"

test.js

@@ -0,0 +1,7 @@
+'use strict'
+
+const assert = require('assert')
+const cssColorKeywords = require('.')
+
+assert.strictEqual(cssColorKeywords.black, '#000000')
+assert.strictEqual(cssColorKeywords.orange, '#ffa500')