Build/Test Tools: Fix message display in test bootstrap.

Any messages to the user which are echo-ed out in the test bootstrap will generally display on a command-line interface.

The *nix specific `"\n"` line ending will be ignored on Windows, making the messages less readable.

For new lines in CLI messages, `PHP_EOL` should be used instead.

This was already done in a few places in the script, but not consistently so. Fixed now.

Follow-up to [UT882], [UT890], [44723], [45020], [48592], [49535], [51560].

Props jrf.
See #53363.

git-svn-id: https://develop.svn.wordpress.org/trunk@51581 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

tests/phpunit/includes/bootstrap.php

@@ -23,34 +23,34 @@
 global $wpdb, $current_site, $current_blog, $wp_rewrite, $shortcode_tags, $wp, $phpmailer, $wp_theme_directories;
 
 if ( ! is_readable( $config_file_path ) ) {
-	echo "Error: wp-tests-config.php is missing! Please use wp-tests-config-sample.php to create a config file.\n";
+	echo 'Error: wp-tests-config.php is missing! Please use wp-tests-config-sample.php to create a config file.' . PHP_EOL;
 	exit( 1 );
 }
 
 require_once $config_file_path;
 require_once __DIR__ . '/functions.php';
 
 if ( defined( 'WP_RUN_CORE_TESTS' ) && WP_RUN_CORE_TESTS && ! is_dir( ABSPATH ) ) {
-	echo "Error: The /build/ directory is missing! Please run `npm run build` prior to running PHPUnit.\n";
+	echo 'Error: The /build/ directory is missing! Please run `npm run build` prior to running PHPUnit.' . PHP_EOL;
 	exit( 1 );
 }
 
 $phpunit_version = tests_get_phpunit_version();
 
 if ( version_compare( $phpunit_version, '5.7.21', '<' ) ) {
 	printf(
-		"Error: Looks like you're using PHPUnit %s. WordPress requires at least PHPUnit 5.7.21.\n",
+		'Error: Looks like you’re using PHPUnit %s. WordPress requires at least PHPUnit 5.7.21.' . PHP_EOL,
 		$phpunit_version
 	);
-	echo "Please use the latest PHPUnit version supported for the PHP version you are running the tests on.\n";
+	echo 'Please use the latest PHPUnit version supported for the PHP version you are running the tests on.' . PHP_EOL;
 	exit( 1 );
 }
 
 // Check that the PHPUnit Polyfills autoloader exists.
 $phpunit_polyfills_autoloader = __DIR__ . '/../../../vendor/yoast/phpunit-polyfills/phpunitpolyfills-autoload.php';
 if ( ! file_exists( $phpunit_polyfills_autoloader ) ) {
-	echo "Error: You need to run `composer update` before running the tests.\n";
-	echo "You can still use a PHPUnit phar to run them, but the dependencies do need to be installed.\n";
+	echo 'Error: You need to run `composer update` before running the tests.' . PHP_EOL;
+	echo 'You can still use a PHPUnit phar to run them, but the dependencies do need to be installed.' . PHP_EOL;
 	exit( 1 );
 }
 
@@ -69,10 +69,10 @@
 
 	if ( $missing_extensions ) {
 		printf(
-			"Error: The following required PHP extensions are missing from the testing environment: %s.\n",
+			'Error: The following required PHP extensions are missing from the testing environment: %s.' . PHP_EOL,
 			implode( ', ', $missing_extensions )
 		);
-		echo "Please make sure they are installed and enabled.\n",
+		echo 'Please make sure they are installed and enabled.' . PHP_EOL,
 		exit( 1 );
 	}
 }
@@ -93,10 +93,10 @@
 
 if ( $missing_constants ) {
 	printf(
-		"Error: The following required constants are not defined: %s.\n",
+		'Error: The following required constants are not defined: %s.' . PHP_EOL,
 		implode( ', ', $missing_constants )
 	);
-	echo "Please check out `wp-tests-config-sample.php` for an example.\n",
+	echo 'Please check out `wp-tests-config-sample.php` for an example.' . PHP_EOL,
 	exit( 1 );
 }