Fixes #270

src/Traits/HasLdapUser.php

@@ -18,7 +18,7 @@ trait HasLdapUser
      *
      * @param User $user
      */
-    public function setLdapUser(User $user)
+    public function setLdapUser(User $user = null)
     {
         $this->ldap = $user;
     }

tests/HasLdapUserTest.php

@@ -0,0 +1,43 @@
+<?php
+namespace Adldap\Laravel\Tests;
+
+use Adldap\Laravel\Tests\Models\User as EloquentUser;
+use Adldap\Laravel\Traits\HasLdapUser;
+use Adldap\Models\User as LdapUser;
+
+class HasLdapUserTest extends \PHPUnit_Framework_TestCase
+{
+    public function testSetLdapUserSetsUserOnModel()
+    {
+        $user = $this->createEloquentUser();
+        $ldapUser = \Mockery::mock(LdapUser::class);
+
+        $user->setLdapUser($ldapUser);
+
+        $this->assertEquals($ldapUser, $user->ldap);
+    }
+
+
+    public function testSetLdapUserWithNull()
+    {
+        $user = $this->createEloquentUser();
+
+        $user->setLdapUser(null);
+
+        $this->assertNull($user->ldap);
+    }
+
+    /**
+     * @return HasLdapUser
+     */
+    private function createEloquentUser()
+    {
+        $user = new EloquentUser();
+
+        if (! array_key_exists(HasLdapUser::class, class_uses(EloquentUser::class))) {
+            $this->fail('User model does not use ' . HasLdapUser::class);
+        }
+
+        return $user;
+    }
+}