diff --git a/tests/TestCase.php b/tests/TestCase.php
index 073779b..32ae056 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -2,9 +2,28 @@
 
 namespace Zoomyboy\LaravelNami\Tests;
 
+use Illuminate\Support\Facades\Config;
+use Zoomyboy\LaravelNami\NamiServiceProvider;
+
 class TestCase extends \Orchestra\Testbench\TestCase
 {
+    public $successJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":0,"statusMessage":"","apiSessionName":"JSESSIONID","apiSessionToken":"ILBY--L4pZEjSKa39tCemens","minorNumber":2,"majorNumber":1}';
+    public $bruteJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Die höchste Anzahl von Login-Versuchen wurde erreicht. Ihr Konto ist für 15 Minuten gesperrt worden. Nach Ablauf dieser Zeitspanne wird ihr Zugang wieder freigegeben.","apiSessionName":"JSESSIONID","apiSessionToken":"tGlSpMMij9ruHfeiUYjO7SD2","minorNumber":0,"majorNumber":0}';
+    public $wrongCredentialsJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Benutzer nicht gefunden oder Passwort falsch.","apiSessionName":"JSESSIONID","apiSessionToken":"v7lrjgPBbXInJR57qJzVIJ05","minorNumber":0,"majorNumber":0}';
+
     public function test_aaa() {
         $this->assertTrue(true);
     }
+
+    protected function getPackageProviders($app)
+    {
+        return [ NamiServiceProvider::class ];
+    }
+
+    protected function setCredentials() {
+        Config::set('nami.auth.mglnr', '11223');
+        Config::set('nami.auth.password', 'secret');
+        Config::set('nami.auth.groupid', '55555');
+    }
+
 }
diff --git a/tests/Unit/GetGroupsTest.php b/tests/Unit/GetGroupsTest.php
index e1ef00b..e7377d8 100644
--- a/tests/Unit/GetGroupsTest.php
+++ b/tests/Unit/GetGroupsTest.php
@@ -12,35 +12,23 @@ use Zoomyboy\LaravelNami\LoginException;
 class GetGroupsTest extends TestCase
 {
 
-    public $successJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":0,"statusMessage":"","apiSessionName":"JSESSIONID","apiSessionToken":"ILBY--L4pZEjSKa39tCemens","minorNumber":2,"majorNumber":1}';
-    public $bruteJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Die höchste Anzahl von Login-Versuchen wurde erreicht. Ihr Konto ist für 15 Minuten gesperrt worden. Nach Ablauf dieser Zeitspanne wird ihr Zugang wieder freigegeben.","apiSessionName":"JSESSIONID","apiSessionToken":"tGlSpMMij9ruHfeiUYjO7SD2","minorNumber":0,"majorNumber":0}';
-    public $wrongCredentialsJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Benutzer nicht gefunden oder Passwort falsch.","apiSessionName":"JSESSIONID","apiSessionToken":"v7lrjgPBbXInJR57qJzVIJ05","minorNumber":0,"majorNumber":0}';
-    public $groups = '{"success":true,"data":[{"descriptor":"Group","name":"","representedClass":"de.iconcept.nami.entity.org.Gruppierung","id":100}],"responseType":"OK"}';
-    public $expiredJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"expired","apiSessionName":"JSESSIONID","apiSessionToken":"tGlSpMMij9ruHfeiUYjO7SD2","minorNumber":0,"majorNumber":0}';
-
-    protected function getPackageProviders($app)
-    {
-        return [ NamiServiceProvider::class ];
-    }
+    public $groupsResponse = '{"success":true,"data":[{"descriptor":"Group","name":"","representedClass":"de.iconcept.nami.entity.org.Gruppierung","id":100}],"responseType":"OK"}';
 
     public function test_get_all_groups()
     {
         Http::fake([
             'https://nami.dpsg.de/ica/pages/login.jsp' => Http::response('<html></html>', 200),
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::response($this->successJson, 200),
-            'https://nami.dpsg.de/ica/rest/nami/gruppierungen/filtered-for-navigation/gruppierung/node/root' => Http::response($this->groups, 200),
+            'https://nami.dpsg.de/ica/rest/nami/gruppierungen/filtered-for-navigation/gruppierung/node/root' => Http::response($this->groupsResponse, 200),
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         Nami::login();
         $this->assertEquals([
             (object) ['id' => 100, 'name' => 'Group']
         ], Nami::groups()->toArray());
 
-
         Http::assertSent(function($request) {
             return $request->url() == 'https://nami.dpsg.de/ica/rest/nami/gruppierungen/filtered-for-navigation/gruppierung/node/root';
         });
@@ -52,12 +40,10 @@ class GetGroupsTest extends TestCase
         Http::fake([
             'https://nami.dpsg.de/ica/pages/login.jsp' => Http::response('<html></html>', 200),
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::response($this->successJson, 200),
-            'https://nami.dpsg.de/ica/rest/nami/gruppierungen/filtered-for-navigation/gruppierung/node/root' => Http::response($this->groups, 200),
+            'https://nami.dpsg.de/ica/rest/nami/gruppierungen/filtered-for-navigation/gruppierung/node/root' => Http::response($this->groupsResponse, 200),
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         Nami::login();
         $this->assertTrue(Nami::hasGroup(100));
diff --git a/tests/Unit/LoginTest.php b/tests/Unit/LoginTest.php
index 639ad24..994914e 100644
--- a/tests/Unit/LoginTest.php
+++ b/tests/Unit/LoginTest.php
@@ -5,22 +5,11 @@ namespace Zoomyboy\LaravelNami\Tests\Unit;
 use Zoomyboy\LaravelNami\Nami;
 use Zoomyboy\LaravelNami\Tests\TestCase;
 use Illuminate\Support\Facades\Http;
-use Illuminate\Support\Facades\Config;
-use Zoomyboy\LaravelNami\NamiServiceProvider;
 use Zoomyboy\LaravelNami\LoginException;
 
 class Login extends TestCase
 {
 
-    public $successJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":0,"statusMessage":"","apiSessionName":"JSESSIONID","apiSessionToken":"ILBY--L4pZEjSKa39tCemens","minorNumber":2,"majorNumber":1}';
-    public $bruteJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Die höchste Anzahl von Login-Versuchen wurde erreicht. Ihr Konto ist für 15 Minuten gesperrt worden. Nach Ablauf dieser Zeitspanne wird ihr Zugang wieder freigegeben.","apiSessionName":"JSESSIONID","apiSessionToken":"tGlSpMMij9ruHfeiUYjO7SD2","minorNumber":0,"majorNumber":0}';
-    public $wrongCredentialsJson = '{"servicePrefix":null,"methodCall":null,"response":null,"statusCode":3000,"statusMessage":"Benutzer nicht gefunden oder Passwort falsch.","apiSessionName":"JSESSIONID","apiSessionToken":"v7lrjgPBbXInJR57qJzVIJ05","minorNumber":0,"majorNumber":0}';
-
-    protected function getPackageProviders($app)
-    {
-        return [ NamiServiceProvider::class ];
-    }
-
     /**
      * A basic unit test example.
      *
@@ -33,9 +22,7 @@ class Login extends TestCase
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::response($this->successJson, 200)
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         Nami::login();
 
@@ -56,9 +43,7 @@ class Login extends TestCase
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::response($this->bruteJson, 200)
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         try {
             Nami::login();
@@ -74,9 +59,7 @@ class Login extends TestCase
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::response($this->successJson, 200)
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         Nami::login();
         Nami::login();
@@ -98,9 +81,7 @@ class Login extends TestCase
             'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup' => Http::sequence()->push($this->wrongCredentialsJson, 200)
         ]);
 
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
+        $this->setCredentials();
 
         try {
             Nami::login();
@@ -110,35 +91,4 @@ class Login extends TestCase
 
         Http::assertSentCount(2);
     }
-
-    /* 
-    public function test_login_again_if_login_has_expired()
-    {
-        Http::fake([
-            'https://nami.dpsg.de/*' => Http::sequence()
-                ->push('<html></html>')
-                ->push($this->successJson, 200)
-                ->push($this->expiredJson, 200)
-                ->push('<html></html>')
-                ->push($this->successJson, 200)
-                ->push('me', 200)
-        ]);
-
-        Config::set('nami.auth.mglnr', '11223');
-        Config::set('nami.auth.password', 'secret');
-        Config::set('nami.auth.groupid', '55555');
-
-        Nami::login();
-        Nami::me();
-
-        Http::assertSent(function($request) {
-            return $request->url() == 'https://nami.dpsg.de/ica/pages/login.jsp';
-        });
-        Http::assertSent(function($request) {
-            return $request->url() == 'https://nami.dpsg.de/ica/rest/nami/auth/manual/sessionStartup'
-                && $request['username'] == '11223' && $request['password'] == 'secret' && $request['redirectTo'] == './app.jsp' && $request['Login'] == 'API';
-        });
-        Http::assertSentCount(6);
-    }
-     */
 }