Tests für die API sind vorhanden.

api/tests/_support/Helper/Api.php

@@ -0,0 +1,34 @@
+<?php
+namespace Helper;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+use Codeception\Module;
+
+class Api extends Module
+{
+
+    const FORMAT_TIME = 'string:regex([0-5]\d:[0-5]\d:[0-5]\d)';
+
+    const WORKING_HOURS_JSON_FORMAT = [
+        'date'         => 'string:date',
+        'workingHours' => self::FORMAT_TIME,
+    ];
+
+    const WORKING_HOURS_VIEW_JSON_FORMAT = [
+        "period"            => "string",
+        "periodDesignation" => "string",
+        "totalHours"        => self::FORMAT_TIME,
+        "workingDays"       => 'integer:>0',
+        "overtime"          => self::FORMAT_TIME,
+    ];
+
+    const ERROR_JSON_FORMAT = [
+        "timestamp" => "string:date-time",
+        "status"    => 0,
+        "error"     => "string",
+        "message"   => "string",
+        "path"      => "string:path",
+    ];
+}