Add a TestPlugin.Comment for the new TestCases

tests/test_app/Plugin/TestPlugin/src/Model/Entity/Comment.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace TestPlugin\Model\Entity;
+
+use Cake\ORM\Entity;
+
+/**
+ * Tests entity class used for asserting correct loading in plugins
+ *
+ */
+class Comment extends Entity {
+
+}