Test rule username

Author: Ariful Alam

tests/Rules/UsernameTest.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Tests\Rules;
+
+use Arifszn\AdvancedValidation\Rules\Username;
+use Arifszn\AdvancedValidation\Tests\TestCase;
+
+class UsernameTest extends TestCase
+{
+    /**
+     * @dataProvider provider
+     */
+    public function testValidation($result, $value)
+    {
+        $this->assertEquals($result, (new Username())->passes('foo', $value));
+    }
+
+    public function provider()
+    {
+        return [
+            [true, 'john'],
+            [true, 'john.doe'],
+            [true, 'john_doe'],
+            [true, 'john-doe'],
+            [true, 'john.doe.123'],
+            [true, 'john123'],
+            [true, 'john_123'],
+            [true, 'john-123'],
+
+            [false, '_john'],
+            [false, '-john'],
+            [false, '.john'],
+            [false, 'john_'],
+            [false, 'john-'],
+            [false, 'john.'],
+            [false, '_john_'],
+            [false, 'john__doe'],
+            [false, 'john--doe'],
+            [false, 'john..doe'],
+            [false, '123'],
+            [false, '123.john'],
+            [false, '&nbsp;'],
+            [false, 'a b c'],
+            [false, 'ｆｏｏbar'],
+            [false, '😀'],
+        ];
+    }
+}