diff --git a/test/M4A_RSS_ItemTest.php b/test/M4A_RSS_ItemTest.php
new file mode 100644
index 0000000..1ce1e07
--- /dev/null
+++ b/test/M4A_RSS_ItemTest.php
@@ -0,0 +1,13 @@
+<?php declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+class M4A_RSS_ItemTest extends Media_RSS_ItemTest
+{
+    public function getDefaultType()
+    {
+        return 'audio/mp4';
+    }
+
+    protected $media_rss_item_class = 'M4A_RSS_Item';
+}
diff --git a/test/MP4_RSS_ItemTest.php b/test/MP4_RSS_ItemTest.php
new file mode 100644
index 0000000..e50e099
--- /dev/null
+++ b/test/MP4_RSS_ItemTest.php
@@ -0,0 +1,13 @@
+<?php declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+class MP4_RSS_ItemTest extends Media_RSS_ItemTest
+{
+    public function getDefaultType()
+    {
+        return 'video/mp4';
+    }
+
+    protected $media_rss_item_class = 'MP4_RSS_Item';
+}