From 2e63f69564aa2f0d5d9f97bcca2ee00b9556f2f9 Mon Sep 17 00:00:00 2001
From: Gary Pendergast <pento@git.wordpress.org>
Date: Thu, 17 Jan 2019 04:33:42 +0000
Subject: [PATCH] Tests: Ensure meta keys are cleaned up after each test.

Props jnylen0.
Fixes #46007.



git-svn-id: https://develop.svn.wordpress.org/trunk@44633 602fd350-edb4-49c9-b593-d223f7449a82
---
 tests/phpunit/includes/testcase.php           | 22 +++++++++++++++++++
 .../tests/rest-api/rest-schema-setup.php      |  9 ++++++++
 2 files changed, 31 insertions(+)

diff --git a/tests/phpunit/includes/testcase.php b/tests/phpunit/includes/testcase.php
index 619264e3f4..65fcc1f54a 100644
--- a/tests/phpunit/includes/testcase.php
+++ b/tests/phpunit/includes/testcase.php
@@ -167,6 +167,7 @@ class WP_UnitTestCase extends PHPUnit_Framework_TestCase {
 			$GLOBALS[ $global ] = null;
 		}
 
+		$this->unregister_all_meta_keys();
 		remove_theme_support( 'html5' );
 		remove_filter( 'query', array( $this, '_create_temporary_tables' ) );
 		remove_filter( 'query', array( $this, '_drop_temporary_tables' ) );
@@ -330,6 +331,27 @@ class WP_UnitTestCase extends PHPUnit_Framework_TestCase {
 		wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
 	}
 
+	/**
+	 * Clean up any registered meta keys.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @global array $wp_meta_keys
+	 */
+	function unregister_all_meta_keys() {
+		global $wp_meta_keys;
+		if ( ! is_array( $wp_meta_keys ) ) {
+			return;
+		}
+		foreach ( $wp_meta_keys as $object_type => $type_keys ) {
+			foreach ( $type_keys as $object_subtype => $subtype_keys ) {
+				foreach ( $subtype_keys as $key => $value ) {
+					unregister_meta_key( $object_type, $key, $object_subtype );
+				}
+			}
+		}
+	}
+
 	function start_transaction() {
 		global $wpdb;
 		$wpdb->query( 'SET autocommit = 0;' );
diff --git a/tests/phpunit/tests/rest-api/rest-schema-setup.php b/tests/phpunit/tests/rest-api/rest-schema-setup.php
index 8d5006a756..8eb03cb4c2 100644
--- a/tests/phpunit/tests/rest-api/rest-schema-setup.php
+++ b/tests/phpunit/tests/rest-api/rest-schema-setup.php
@@ -257,7 +257,16 @@ class WP_Test_REST_Schema_Initialization extends WP_Test_REST_TestCase {
 			'show_in_rest'      => true,
 		);
 
+		$meta_multi_args           = $meta_args;
+		$meta_multi_args['single'] = false;
+
 		// Set up meta.
+		register_meta( 'term', 'test_single', $meta_args );
+		register_meta( 'term', 'test_multi', $meta_multi_args );
+		register_term_meta( 'category', 'test_cat_single', $meta_args );
+		register_term_meta( 'category', 'test_cat_multi', $meta_multi_args );
+		register_term_meta( 'post_tag', 'test_tag_meta', $meta_args );
+
 		register_meta( 'user', 'meta_key', $meta_args );
 		update_user_meta( 1, 'meta_key', 'meta_value' ); // Always use the first user.
 		register_meta( 'post', 'meta_key', $meta_args );