Migrate tests to Pest (#8)

Reviewed-on: #8

tests/Integration/SubDocument.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+namespace Test\Integration;
+
+/**
+ * A sub-document for testing
+ */
+class SubDocument
+{
+    public function __construct(public string $foo = '', public string $bar = '') { }
+}