add test case using mocha.

Author: SFantasy

.gitignore

@@ -1,3 +1,3 @@
 .idea/
-.node_modules/
+node_modules/
 .DS_Store

lib/index.js

@@ -16,7 +16,7 @@ module.exports = {
    * @returns {boolean}
    */
   isEmail: function (str) {
-    return /^[a-z0-9!#$%&'*+\/=?^_`{|}~.-]+@[a-z0-9-]+(\.[a-z0-9-]+)*$/i.test(str);
+    return /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/.test(str);
   },
 
   /**

package.json

@@ -22,5 +22,8 @@
     "url": "https://github.com/SFantasy/node-validator/issues"
   },
   "homepage": "https://github.com/SFantasy/node-validator",
-  "dependencies": {}
+  "dependencies": {},
+  "devDependencies": {
+    "mocha": "^1.21.4"
+  }
 }

test/test.js

@@ -0,0 +1,62 @@
+/**
+ *
+ * test
+ *
+ * @description
+ * @author Fantasy <fantasyshao@icloud.com>
+ * @create 2014-09-10
+ * @update 2014-09-10
+ */
+
+var validator = require('../index');
+var assert = require('assert');
+var format = require('util').format;
+
+function test(options) {
+  var args = options.args || [];
+  args.unshift(null);
+  if (options.valid) {
+    options.valid.forEach(function (valid) {
+      args[0] = valid;
+      if (validator[options.validator].apply(validator, args) !== true) {
+        var warning = format('validator.%s(%s) failed but should have passed',
+          options.validator, args.join(', '));
+        throw new Error(warning);
+      }
+    });
+  }
+  if (options.invalid) {
+    options.invalid.forEach(function (invalid) {
+      args[0] = invalid;
+      if (validator[options.validator].apply(validator, args) !== false) {
+        var warning = format('validator.%s(%s) passed but should have failed',
+          options.validator, args.join(', '));
+        throw new Error(warning);
+      }
+    });
+  }
+}
+
+describe('Validate', function () {
+
+  describe('#isEmail', function () {
+    it('should validate email address', function (done) {
+      test({
+        validator: 'isEmail',
+        valid: [
+          'abc@test.com',
+          'a0gg@gmail.com',
+          'test123@abc.com.cn',
+          'test.123@gmail.com'
+        ],
+        invalid: [
+          'abcd@',
+          '@test.com'
+        ]
+      });
+
+      done();
+    });
+  });
+
+});