diff --git a/api/tests/unit/Repositories/WorkingHoursViewRepositoryTest.php b/api/tests/unit/Repositories/WorkingHoursViewRepositoryTest.php
index 7ccbc67..12d71b2 100644
--- a/api/tests/unit/Repositories/WorkingHoursViewRepositoryTest.php
+++ b/api/tests/unit/Repositories/WorkingHoursViewRepositoryTest.php
@@ -4,10 +4,11 @@ namespace TorstenHettstedt\TimekeepingApi\Tests\Unit\Repositories;
 
 use Codeception\Test\Unit;
 use PDO;
-use TorstenHettstedt\TimekeepingApi\Models\PeriodDesignationEnum;
 use TorstenHettstedt\TimekeepingApi\Models\WorkingHoursView;
 use TorstenHettstedt\TimekeepingApi\Repositories\RepositoryRecordNotFoundException;
-use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursWeeklyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursMonthlyViewRepository;
+use TorstenHettstedt\TimekeepingApi\Repositories\WorkingHoursYearlyViewRepository;
 
 class WorkingHoursViewRepositoryTest extends Unit
 {
@@ -31,9 +32,9 @@ class WorkingHoursViewRepositoryTest extends Unit
     public function listObjectProvider(): array
     {
         return [
-            [PeriodDesignationEnum::YEARLY(),  1],
-            [PeriodDesignationEnum::MONTHLY(), 3],
-            [PeriodDesignationEnum::WEEKLY(), 13],
+            [WorkingHoursYearlyViewRepository::class,  1],
+            [WorkingHoursMonthlyViewRepository::class, 3],
+            [WorkingHoursWeeklyViewRepository::class, 13],
         ];
     }
 
@@ -43,9 +44,9 @@ class WorkingHoursViewRepositoryTest extends Unit
     public function existingObjectProvider(): array
     {
         return [
-            [PeriodDesignationEnum::YEARLY(),  '2020', 61],
-            [PeriodDesignationEnum::MONTHLY(), '2020-02', 20],
-            [PeriodDesignationEnum::WEEKLY(),  '2020#3', 5],
+            [WorkingHoursYearlyViewRepository::class,  '2020',    61],
+            [WorkingHoursMonthlyViewRepository::class, '2020 February', 20],
+            [WorkingHoursWeeklyViewRepository::class,  '2020#03',   5],
         ];
     }
 
@@ -55,54 +56,54 @@ class WorkingHoursViewRepositoryTest extends Unit
     public function notExistingObjectProvider(): array
     {
         return [
-            [PeriodDesignationEnum::YEARLY(),  '2022',],
-            [PeriodDesignationEnum::MONTHLY(), '2020-05',],
-            [PeriodDesignationEnum::WEEKLY(),  '2020#30',],
+            [WorkingHoursYearlyViewRepository::class,  '2022',],
+            [WorkingHoursMonthlyViewRepository::class, '2020 May',],
+            [WorkingHoursWeeklyViewRepository::class,  '2020#30',],
         ];
     }
 
     /**
-     * @param PeriodDesignationEnum $period
-     * @param int                   $count_records
+     * @param string $period_class
+     * @param int    $count_records
      *
      * @dataProvider listObjectProvider
      */
-    public function testFindAll(PeriodDesignationEnum $period, int $count_records): void
+    public function testFindAll(string $period_class, int $count_records): void
     {
-        $repository = new WorkingHoursViewRepository($this->pdoObject, $period);
+        $repository = new $period_class($this->pdoObject);
         $models = $repository->findAll();
         $this->assertIsArray($models);
         $this->assertContainsOnly(WorkingHoursView::class, $models);
-        $this->assertCount(self::RECORDS_COUNT, $models);
+        $this->assertCount($count_records, $models);
     }
 
     /**
      *
      * @dataProvider existingObjectProvider
      *
-     * @param PeriodDesignationEnum $period
-     * @param string                $search
+     * @param string $period_class
+     * @param string $search
+     * @param int    $workingDays
      */
-    public function testExistingFindByKey(PeriodDesignationEnum $period, string $search, int $workingDays): void
+    public function testExistingFindByKey(string $period_class, string $search, int $workingDays): void
     {
-        $repository = new WorkingHoursViewRepository($this->pdoObject, $period);
-        $model = $repository->findByKey(self::EXISTING_DATE);
+        $repository = new $period_class($this->pdoObject);
+        $model = $repository->findByKey($search);
         $this->assertInstanceOf(WorkingHoursView::class, $model);
         $this->assertEquals($workingDays, $model->getWorkingDays());
     }
 
     /**
-     * @param PeriodDesignationEnum $period
-     * @param string                $search
+     * @param string $period_class
+     * @param string $search
      *
      * @dataProvider notExistingObjectProvider
      *
-     * @throws RepositoryRecordNotFoundException
      */
-    public function testNotExistingFindByKey(PeriodDesignationEnum $period, string $search): void
+    public function testNotExistingFindByKey(string $period_class, string $search): void
     {
-        $repository = new WorkingHoursViewRepository($this->pdoObject, $period);
+        $repository = new $period_class($this->pdoObject);
         $this->expectException(RepositoryRecordNotFoundException::class);
-        $repository->findByKey(self::NEW_DATE);
+        $repository->findByKey($search);
     }
 }