Ticket #41978: 41978.patch

tests/phpunit/includes/functions.php

@@ -51 +51 @@
         }
 }
 
+/**
+ * Delete all data from the database, except:
+ * - The default category.
+ * - The default user.
+ */
 function _delete_all_data() {
         global $wpdb;
 
+        // Retrieve all attachment posts, and delete them along with the attached media.
+        $attachments = $wpdb->get_results( "SELECT ID from {$wpdb->posts} WHERE post_type = 'attachment'", ARRAY_A );
+
+        foreach ( $attachments as $attachment ) {
+                wp_delete_attachment( $attachment['ID'], true );
+        }
+
         foreach ( array(
                 $wpdb->posts,
                 $wpdb->postmeta,
                 $wpdb->comments,
                 $wpdb->commentmeta,
                 $wpdb->term_relationships,
-                $wpdb->termmeta
+                $wpdb->termmeta,
         ) as $table ) {
                 $wpdb->query( "DELETE FROM {$table}" );
         }
 
         foreach ( array(
                 $wpdb->terms,
-                $wpdb->term_taxonomy
+                $wpdb->term_taxonomy,
         ) as $table ) {
                 $wpdb->query( "DELETE FROM {$table} WHERE term_id != 1" );
         }

new file tests/phpunit/tests/includes/functions.php

@@ +1 @@
+<?php
+/**
+ * Tests for the `includes/functions.php` file of the Unit Testing Framework.
+ *
+ * @group testsuite
+ */
+
+class Test_Includes extends WP_UnitTestCase {
+        /**
+         * Verify that attachment files are deleted along with attachment posts.
+         *
+         * @ticket 41978
+         */
+        public function test_delete_all_data_deletes_attachments() {
+                // Create an attachment with an image.
+                $attachment_id = self::factory()->attachment->create_upload_object(
+                        DIR_TESTDATA . '/images/waffles.jpg'
+                );
+
+                // Retrieve the path to the image.
+                $attachment_file = get_attached_file( $attachment_id );
+
+                _delete_all_data();
+
+                $posts = new WP_Query( array(
+                        'post_type'   => 'any',
+                        'post_status' => 'any',
+                ) );
+
+                // Verify that the image has been deleted along with the attachment.
+                $this->assertSame( $posts->posts, array() );
+                $this->assertFalse( file_exists( $attachment_file ) );
+        }
+}