class DrupalInstalledTest

class DrupalInstalledTest extends BuildTestBase {
  use ExecTrait;
  
  /**
   * Directory to perform the tests in.
   *
   * @var string
   */
  protected $fixturesDir;
  
  /**
   * The Fixtures object.
   *
   * @var \Drupal\Tests\Composer\Plugin\Scaffold\Fixtures
   */
  protected $fixtures;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->fixtures = new Fixtures();
    $this->fixtures
      ->createIsolatedComposerCacheDir();
    $this->fixturesDir = $this->fixtures
      ->tmpDir($this->name());
    $replacements = [
      'SYMLINK' => 'false',
      'PROJECT_ROOT' => $this->fixtures
        ->projectRoot(),
    ];
    $this->fixtures
      ->cloneFixtureProjects($this->fixturesDir, $replacements);
  }
  
  /**
   * {@inheritdoc}
   */
  protected function tearDown() : void {
    // Remove any temporary directories et. al. that were created.
    $this->fixtures
      ->tearDown();
    parent::tearDown();
  }
  
  /**
   * Tests DrupalInstalled.php hash changes when scaffolding is run.
   */
  public function testDrupalInstalledHash() : void {
    $topLevelProjectDir = 'drupal-installed-fixture';
    $sut = $this->fixturesDir . '/' . $topLevelProjectDir;
    $this->mustExec("composer install --no-ansi", $sut);
    $original_version_hash = sha1_file($sut . '/vendor/drupal/DrupalInstalled.php');
    // Require two fixtures and ensure that the DrupalInstalled.php file is
    // updated.
    $this->mustExec("composer require --no-ansi --no-interaction fixtures/empty-file:dev-main fixtures/scaffold-override-fixture:dev-main", $sut);
    $two_fixtures_hash = sha1_file($sut . '/vendor/drupal/DrupalInstalled.php');
    $this->assertNotEquals($original_version_hash, $two_fixtures_hash);
    // Remove one fixture and ensure the hash is not equal to the original or
    // the hash with two fixtures.
    $this->mustExec("composer remove --no-ansi --no-interaction fixtures/empty-file", $sut);
    $one_fixture_hash = sha1_file($sut . '/vendor/drupal/DrupalInstalled.php');
    $this->assertNotEquals($original_version_hash, $one_fixture_hash);
    $this->assertNotEquals($two_fixtures_hash, $one_fixture_hash);
    // Add the fixture back and ensure the hash is changed and equal to the
    // previous hash for two fixtures.
    $this->mustExec("composer require --no-ansi --no-interaction fixtures/empty-file:dev-main", $sut);
    $this->assertEquals($two_fixtures_hash, sha1_file($sut . '/vendor/drupal/DrupalInstalled.php'));
  }

}