ComposerTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\Composer;

use Drupal\Composer\Composer;
use Drupal\Tests\UnitTestCase;

/**
 * @coversDefaultClass \Drupal\Composer\Composer
 * @group Composer
 */
class ComposerTest extends UnitTestCase {
    
    /**
     * Verify that Composer::ensureComposerVersion() doesn't break.
     *
     * @covers ::ensureComposerVersion
     */
    public function testEnsureComposerVersion() : void {
        try {
            $this->assertNull(Composer::ensureComposerVersion());
        } catch (\RuntimeException $e) {
            $this->assertMatchesRegularExpression('/Drupal core development requires Composer 2.3.5, but Composer /', $e->getMessage());
        }
    }
    
    /**
     * Ensure that the configured php version matches the minimum php version.
     *
     * Also ensure that the minimum php version in the root-level composer.json
     * file exactly matches \Drupal::MINIMUM_PHP.
     */
    public function testEnsurePhpConfiguredVersion() : void {
        $composer_json = json_decode(file_get_contents($this->root . '/composer.json'), TRUE);
        $composer_core_json = json_decode(file_get_contents($this->root . '/core/composer.json'), TRUE);
        $this->assertEquals(\Drupal::MINIMUM_PHP, $composer_json['config']['platform']['php'], 'The \\Drupal::MINIMUM_PHP constant should always be exactly the same as the config.platform.php in the root composer.json.');
        $this->assertEquals($composer_core_json['require']['php'], '>=' . $composer_json['config']['platform']['php'], 'The config.platform.php configured version in the root composer.json file should always be exactly the same as the minimum php version configured in core/composer.json.');
    }

}