diff --git a/tests/Models/CostCenterMapperTest.php b/tests/Models/CostCenterMapperTest.php
index b8c9362..73e44ea 100644
--- a/tests/Models/CostCenterMapperTest.php
+++ b/tests/Models/CostCenterMapperTest.php
@@ -23,6 +23,10 @@ use phpOMS\Localization\ISO639x1Enum;
  */
 class CostCenterMapperTest extends \PHPUnit\Framework\TestCase
 {
+    /**
+     * @covers Modules\Accounting\Models\CostCenterMapper
+     * @group module
+     */
     public function testCR() : void
     {
         $costcenter = new CostCenter();
diff --git a/tests/Models/CostCenterTest.php b/tests/Models/CostCenterTest.php
index cbe374e..b13096f 100644
--- a/tests/Models/CostCenterTest.php
+++ b/tests/Models/CostCenterTest.php
@@ -21,6 +21,10 @@ use Modules\Accounting\Models\CostCenter;
  */
 class CostCenterTest extends \PHPUnit\Framework\TestCase
 {
+    /**
+     * @covers Modules\Accounting\Models\CostCenter
+     * @group module
+     */
     public function testDefault() : void
     {
         $cc = new CostCenter();
@@ -32,6 +36,10 @@ class CostCenterTest extends \PHPUnit\Framework\TestCase
         self::assertNull($cc->getParent());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostCenter
+     * @group module
+     */
     public function testNameInputOutput() : void
     {
         $cc = new CostCenter();
@@ -40,6 +48,10 @@ class CostCenterTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestName', $cc->getName());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostCenter
+     * @group module
+     */
     public function testCodeInputOutput() : void
     {
         $cc = new CostCenter();
@@ -48,6 +60,10 @@ class CostCenterTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestCode', $cc->getCode());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostCenter
+     * @group module
+     */
     public function testDescriptionInputOutput() : void
     {
         $cc = new CostCenter();
@@ -56,6 +72,10 @@ class CostCenterTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestDescription', $cc->getDescription());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostCenter
+     * @group module
+     */
     public function testParentInputOutput() : void
     {
         $cc = new CostCenter();
diff --git a/tests/Models/CostObjectMapperTest.php b/tests/Models/CostObjectMapperTest.php
index 7e5361d..3b79216 100644
--- a/tests/Models/CostObjectMapperTest.php
+++ b/tests/Models/CostObjectMapperTest.php
@@ -23,6 +23,10 @@ use phpOMS\Localization\ISO639x1Enum;
  */
 class CostObjectMapperTest extends \PHPUnit\Framework\TestCase
 {
+    /**
+     * @covers Modules\Accounting\Models\CostObjectMapper
+     * @group module
+     */
     public function testCR() : void
     {
         $costobject = new CostObject();
diff --git a/tests/Models/CostObjectTest.php b/tests/Models/CostObjectTest.php
index 3e0ac95..39b2001 100644
--- a/tests/Models/CostObjectTest.php
+++ b/tests/Models/CostObjectTest.php
@@ -21,6 +21,10 @@ use Modules\Accounting\Models\CostObject;
  */
 class CostObjectTest extends \PHPUnit\Framework\TestCase
 {
+    /**
+     * @covers Modules\Accounting\Models\CostObject
+     * @group module
+     */
     public function testDefault() : void
     {
         $co = new CostObject();
@@ -32,6 +36,10 @@ class CostObjectTest extends \PHPUnit\Framework\TestCase
         self::assertNull($co->getParent());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostObject
+     * @group module
+     */
     public function testNameInputOutput() : void
     {
         $co = new CostObject();
@@ -40,6 +48,10 @@ class CostObjectTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestName', $co->getName());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostObject
+     * @group module
+     */
     public function testCodeInputOutput() : void
     {
         $co = new CostObject();
@@ -48,6 +60,10 @@ class CostObjectTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestCode', $co->getCode());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostObject
+     * @group module
+     */
     public function testDescriptionInputOutput() : void
     {
         $co = new CostObject();
@@ -56,6 +72,10 @@ class CostObjectTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('TestDescription', $co->getDescription());
     }
 
+    /**
+     * @covers Modules\Accounting\Models\CostObject
+     * @group module
+     */
     public function testParentInputOutput() : void
     {
         $co = new CostObject();