Tests - use common method to create/prepare date

tests/Utilities/DateUtility.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\LimeSurvey\Test\ApiClient\Utilities;
+
+use DateTime;
+
+/**
+ * Date-related utility
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class DateUtility
+{
+    /**
+     * Returns date formatted with long or medium format
+     *
+     * @param bool $useLongFormat (optional) If is set to true, long format will be used (default behaviour).
+     *                            Otherwise - medium format.
+     * @return string
+     */
+    public static function getDateTime($useLongFormat = true)
+    {
+        $format = 'Y-m-d H:i';
+
+        if ($useLongFormat) {
+            $format = 'Y-m-d H:i:s';
+        }
+
+        return (new DateTime())->format($format);
+    }
+}