diff --git a/tests/Unit/Lexer/RestrictedNameTest.php b/tests/Unit/Lexer/RestrictedNameTest.php
new file mode 100644
index 00000000..2fb00074
--- /dev/null
+++ b/tests/Unit/Lexer/RestrictedNameTest.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Tests\Unit\Lexer;
+
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\WithFaker;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use App\Util\Lexer\RestrictedNames;
+
+class RestrictedNameTest extends TestCase
+{
+    /** @test */
+    public function restrictedUsername()
+    {
+        $this->assertContains('p', RestrictedNames::get());
+        $this->assertContains('admin', RestrictedNames::get());
+        $this->assertNotContains('dansup', RestrictedNames::get());
+        $this->assertNotContains('lain', RestrictedNames::get());
+    }
+}