Wordpress/tests/phpunit/includes/functions.php

<?php

/**
 * Resets various `$_SERVER` variables that can get altered during tests.
 */
function tests_reset__SERVER() {
	$_SERVER['HTTP_HOST']       = WP_TESTS_DOMAIN;
	$_SERVER['REMOTE_ADDR']     = '127.0.0.1';
	$_SERVER['REQUEST_METHOD']  = 'GET';
	$_SERVER['REQUEST_URI']     = '';
	$_SERVER['SERVER_NAME']     = WP_TESTS_DOMAIN;
	$_SERVER['SERVER_PORT']     = '80';
	$_SERVER['SERVER_PROTOCOL'] = 'HTTP/1.1';

	unset( $_SERVER['HTTP_REFERER'] );
	unset( $_SERVER['HTTPS'] );
}

// For adding hooks before loading WP
function tests_add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1 ) {
	global $wp_filter;

	if ( function_exists( 'add_filter' ) ) {
		add_filter( $tag, $function_to_add, $priority, $accepted_args );
	} else {
		$idx                                    = _test_filter_build_unique_id( $tag, $function_to_add, $priority );
		$wp_filter[ $tag ][ $priority ][ $idx ] = array(
			'function'      => $function_to_add,
			'accepted_args' => $accepted_args,
		);
	}
	return true;
}

function _test_filter_build_unique_id( $tag, $function, $priority ) {
	if ( is_string( $function ) ) {
		return $function;
	}

	if ( is_object( $function ) ) {
		// Closures are currently implemented as objects
		$function = array( $function, '' );
	} else {
		$function = (array) $function;
	}

	if ( is_object( $function[0] ) ) {
		return spl_object_hash( $function[0] ) . $function[1];
	} elseif ( is_string( $function[0] ) ) {
		// Static Calling
		return $function[0] . $function[1];
	}
}

function _delete_all_data() {
	global $wpdb;

	foreach ( array(
		$wpdb->posts,
		$wpdb->postmeta,
		$wpdb->comments,
		$wpdb->commentmeta,
		$wpdb->term_relationships,
		$wpdb->termmeta,
	) as $table ) {
		$wpdb->query( "DELETE FROM {$table}" );
	}

	foreach ( array(
		$wpdb->terms,
		$wpdb->term_taxonomy,
	) as $table ) {
		$wpdb->query( "DELETE FROM {$table} WHERE term_id != 1" );
	}

	$wpdb->query( "UPDATE {$wpdb->term_taxonomy} SET count = 0" );

	$wpdb->query( "DELETE FROM {$wpdb->users} WHERE ID != 1" );
	$wpdb->query( "DELETE FROM {$wpdb->usermeta} WHERE user_id != 1" );
}

function _delete_all_posts() {
	global $wpdb;

	$all_posts = $wpdb->get_results( "SELECT ID, post_type from {$wpdb->posts}", ARRAY_A );
	if ( ! $all_posts ) {
		return;
	}

	foreach ( $all_posts as $data ) {
		if ( 'attachment' === $data['post_type'] ) {
			wp_delete_attachment( $data['ID'], true );
		} else {
			wp_delete_post( $data['ID'], true );
		}
	}
}

function _wp_die_handler( $message, $title = '', $args = array() ) {
	if ( ! $GLOBALS['_wp_die_disabled'] ) {
		_wp_die_handler_txt( $message, $title, $args );
	} else {
		//Ignore at our peril
	}
}

function _disable_wp_die() {
	$GLOBALS['_wp_die_disabled'] = true;
}

function _enable_wp_die() {
	$GLOBALS['_wp_die_disabled'] = false;
}

function _wp_die_handler_filter() {
	return '_wp_die_handler';
}

function _wp_die_handler_filter_exit() {
	return '_wp_die_handler_exit';
}

function _wp_die_handler_txt( $message, $title, $args ) {
	echo "\nwp_die called\n";
	echo "Message : $message\n";
	echo "Title : $title\n";
	if ( ! empty( $args ) ) {
		echo "Args: \n";
		foreach ( $args as $k => $v ) {
			echo "\t $k : $v\n";
		}
	}
}

function _wp_die_handler_exit( $message, $title, $args ) {
	echo "\nwp_die called\n";
	echo "Message : $message\n";
	echo "Title : $title\n";
	if ( ! empty( $args ) ) {
		echo "Args: \n";
		foreach ( $args as $k => $v ) {
			echo "\t $k : $v\n";
		}
	}
	exit( 1 );
}

/**
 * Set a permalink structure.
 *
 * Hooked as a callback to the 'populate_options' action, we use this function to set a permalink structure during
 * `wp_install()`, so that WP doesn't attempt to do a time-consuming remote request.
 *
 * @since 4.2.0
 */
function _set_default_permalink_structure_for_tests() {
	update_option( 'permalink_structure', '/%year%/%monthnum%/%day%/%postname%/' );
}

/**
 * Helper used with the `upload_dir` filter to remove the /year/month sub directories from the uploads path and URL.
 */
function _upload_dir_no_subdir( $uploads ) {
	$subdir = $uploads['subdir'];

	$uploads['subdir'] = '';
	$uploads['path']   = str_replace( $subdir, '', $uploads['path'] );
	$uploads['url']    = str_replace( $subdir, '', $uploads['url'] );

	return $uploads;
}

/**
 * Helper used with the `upload_dir` filter to set https upload URL.
 */
function _upload_dir_https( $uploads ) {
	$uploads['url']     = str_replace( 'http://', 'https://', $uploads['url'] );
	$uploads['baseurl'] = str_replace( 'http://', 'https://', $uploads['baseurl'] );

	return $uploads;
}

/**
 * Use the Spy_REST_Server class for the REST server.
 */
function _wp_rest_server_class_filter() {
	return 'Spy_REST_Server';
}

// Skip `setcookie` calls in auth_cookie functions due to warning:
// Cannot modify header information - headers already sent by ...
tests_add_filter( 'send_auth_cookies', '__return_false' );