fix tests to run on PHP 5.4

Author: umt-dev-123

tests/AdldapTest.php

@@ -10,13 +10,13 @@ class AdldapTest extends FunctionalTestCase
 {
     public function testConfigurationNotFoundException()
     {
-        $this->setExpectedException(ConfigurationMissingException::class);
+        $this->setExpectedException('Adldap\Laravel\Exceptions\ConfigurationMissingException');
 
         App::make('adldap');
     }
 
     public function testRegistration()
     {
-        $this->assertTrue(app()->register(AdldapServiceProvider::class));
+        $this->assertTrue(app()->register('Adldap\Laravel\AdldapServiceProvider'));
     }
 }

tests/FunctionalTestCase.php

@@ -40,7 +40,7 @@ protected function getPackageProviders()
     protected function getPackageAliases()
     {
         return [
-            Adldap::class,
+            'Adldap\Laravel\Facades\Adldap',
         ];
     }
 }