Lines:

<?php

if ( defined( 'WP_TESTS_CONFIG_FILE_PATH' ) ) {
  $config_file_path = WP_TESTS_CONFIG_FILE_PATH;
} else {
  $config_file_path = dirname( __DIR__ );
  if ( ! file_exists( $config_file_path . '/wp-tests-config.php' ) ) {
    // Support the config file from the root of the develop repository.
    if ( basename( $config_file_path ) === 'phpunit' && basename( dirname( $config_file_path ) ) === 'tests' ) {
      $config_file_path = dirname( dirname( $config_file_path ) );
    }
  }
  $config_file_path .= '/wp-tests-config.php';
}

/*
 * Globalize some WordPress variables, because PHPUnit loads this file inside a function.
 * See: https://github.com/sebastianbergmann/phpunit/issues/325
 */
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.' . 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 ) ) {
  if ( substr( ABSPATH, -7 ) !== '/build/' ) {
    printf(
      'Error: The ABSPATH constant in the `wp-tests-config.php` file is set to a non-existent path "%s". Please verify.' . PHP_EOL,
      ABSPATH
    );
    exit( 1 );
  } else {
    echo 'Error: The PHPUnit tests should be run on the /src/ directory, not the /build/ directory.'
      . ' Please update the ABSPATH constant in your `wp-tests-config.php` file to `dirname( __FILE__ ) . \'/src/\'`'
      . ' or 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." . PHP_EOL,
    $phpunit_version
  );
  echo 'Please use the latest PHPUnit version supported for the PHP version you are running the tests on.' . PHP_EOL;
  exit( 1 );
}

/*
 * Load the PHPUnit Polyfills autoloader.
 *
 * The PHPUnit Polyfills are a requirement for the WP test suite.
 *
 * For running the Core tests, the Make WordPress Core handbook contains step-by-step instructions
 * on how to get up and running for a variety of supported workflows:
 * {@link https://make.wordpress.org/core/handbook/testing/automated-testing/phpunit/#test-running-workflow-options}
 *
 * Plugin/theme integration tests can handle this in any of the following ways:
 * - When using a full WP install: run `composer update -W` for the WP install prior to running the tests.
 * - When using a partial WP test suite install:
 *   - Add a `yoast/phpunit-polyfills` (dev) requirement to the plugin/theme's own `composer.json` file.
 *   - And then:
 *     - Either load the PHPUnit Polyfills autoload file prior to running the WP core bootstrap file.
 *     - Or declare a `WP_TESTS_PHPUNIT_POLYFILLS_PATH` constant containing the absolute path to the
 *       root directory of the PHPUnit Polyfills installation.
 *       If the constant is used, it is strongly recommended to declare this constant in the plugin/theme's
 *       own test bootstrap file.
 *       The constant MUST be declared prior to calling this file.
 */
if ( ! class_exists( 'Yoast\PHPUnitPolyfills\Autoload' ) ) {
  // Default location of the autoloader for WP core test runs.
  $phpunit_polyfills_autoloader = dirname( dirname( dirname( __DIR__ ) ) ) . '/vendor/yoast/phpunit-polyfills/phpunitpolyfills-autoload.php';
  $phpunit_polyfills_error      = false;

  // Allow for a custom installation location to be provided for plugin/theme integration tests.
  if ( defined( 'WP_TESTS_PHPUNIT_POLYFILLS_PATH' ) ) {
    $phpunit_polyfills_path = WP_TESTS_PHPUNIT_POLYFILLS_PATH;

    if ( is_string( WP_TESTS_PHPUNIT_POLYFILLS_PATH )
      && '' !== WP_TESTS_PHPUNIT_POLYFILLS_PATH
    ) {
      // Be tolerant to the path being provided including the filename.
      if ( substr( $phpunit_polyfills_path, -29 ) !== 'phpunitpolyfills-autoload.php' ) {
        $phpunit_polyfills_path = rtrim( $phpunit_polyfills_path, '/\\' );
        $phpunit_polyfills_path = $phpunit_polyfills_path . '/phpunitpolyfills-autoload.php';
      }

      $phpunit_polyfills_autoloader = $phpunit_polyfills_path;
    } else {
      $phpunit_polyfills_error = true;
    }
  }

  if ( $phpunit_polyfills_error || ! file_exists( $phpunit_polyfills_autoloader ) ) {

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