Adding Reset_Data_Structures trait (#538)

src/mantle/testing/concerns/trait-reset-data-structures.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * Reset_Data_Structures trait file
+ *
+ * @package Mantle
+ */
+
+namespace Mantle\Testing\Concerns;
+
+/**
+ * Reset the data structures on set up.
+ *
+ * When the trait is used it will reset the post types and taxonomies back to
+ * their original state for each test run.
+ */
+trait Reset_Data_Structures {
+	use WordPress_State;
+
+	/**
+	 * Reset the data structures on set up.
+	 */
+	public function reset_data_structures_set_up(): void {
+		$this->reset_post_types();
+		$this->reset_taxonomies();
+	}
+}