class ScaffoldUpgradeTest

class ScaffoldUpgradeTest extends TestCase {
    use AssertUtilsTrait;
    use ExecTrait;
    
    /**
     * The Fixtures object.
     *
     * @var \Drupal\Tests\Composer\Plugin\Scaffold\Fixtures
     */
    protected $fixtures;
    
    /**
     * The Fixtures directory.
     *
     * @var string
     */
    protected string $fixturesDir;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->fixtures = new Fixtures();
        $this->fixtures
            ->createIsolatedComposerCacheDir();
    }
    
    /**
     * Tests upgrading the Composer Scaffold plugin.
     */
    public function testScaffoldUpgrade() : void {
        $composerVersionLine = exec('composer --version');
        if (str_contains($composerVersionLine, 'Composer version 2')) {
            $this->markTestSkipped('We cannot run the scaffold upgrade test with Composer 2 until we have a stable version of drupal/core-composer-scaffold to start from that we can install with Composer 2.x.');
        }
        $this->fixturesDir = $this->fixtures
            ->tmpDir($this->name());
        $replacements = [
            'SYMLINK' => 'false',
            'PROJECT_ROOT' => $this->fixtures
                ->projectRoot(),
        ];
        $this->fixtures
            ->cloneFixtureProjects($this->fixturesDir, $replacements);
        $topLevelProjectDir = 'drupal-drupal';
        $sut = $this->fixturesDir . '/' . $topLevelProjectDir;
        // First step: set up the Scaffold plug in. Ensure that scaffold operation
        // ran. This is more of a control than a test.
        $this->mustExec("composer install --no-ansi", $sut);
        $this->assertScaffoldedFile($sut . '/sites/default/default.settings.php', FALSE, 'A settings.php fixture file scaffolded from the scaffold-override-fixture');
        // Next, bring back packagist.org and install core-composer-scaffold:8.8.0.
        // Packagist is disabled in the fixture; we bring it back by removing the
        // line that disables it.
        $this->mustExec("composer config --unset repositories.packagist.org", $sut);
        $stdout = $this->mustExec("composer require --no-ansi drupal/core-composer-scaffold:8.8.0 --no-plugins 2>&1", $sut);
        $this->assertStringContainsString("  - Installing drupal/core-composer-scaffold (8.8.0):", $stdout);
        // We can't force the path repo to re-install over the stable version
        // without removing it, and removing it masks the bugs we are testing for.
        // We will therefore make a git repo so that we can tag an explicit version
        // to require.
        $testVersion = '99.99.99';
        $scaffoldPluginTmpRepo = $this->createTmpRepo($this->fixtures
            ->projectRoot(), $this->fixturesDir, $testVersion);
        // Disable packagist.org and upgrade back to the Scaffold plugin under test.
        // This puts the `"packagist.org": false` config line back in composer.json
        // so that Packagist will no longer be used.
        $this->mustExec("composer config repositories.packagist.org false", $sut);
        $this->mustExec("composer config repositories.composer-scaffold vcs 'file:///{$scaffoldPluginTmpRepo}'", $sut);
        // Using 'mustExec' was giving a strange binary string here.
        $output = $this->mustExec("composer require --no-ansi drupal/core-composer-scaffold:{$testVersion} 2>&1", $sut);
        $this->assertStringContainsString("Installing drupal/core-composer-scaffold ({$testVersion})", $output);
        // Remove a scaffold file and run the scaffold command again to prove that
        // scaffolding is still working.
        unlink("{$sut}/index.php");
        $stdout = $this->mustExec("composer scaffold", $sut);
        $this->assertStringContainsString("Scaffolding files for", $stdout);
        $this->assertFileExists("{$sut}/index.php");
    }
    
    /**
     * Copy the provided source directory and create a temporary git repository.
     *
     * @param string $source
     *   Path to directory to copy.
     * @param string $destParent
     *   Path to location to create git repository.
     * @param string $version
     *   Version to tag the repository with.
     *
     * @return string
     *   Path to temporary git repository.
     */
    protected function createTmpRepo($source, $destParent, $version) : string {
        $target = $destParent . '/' . basename($source);
        $filesystem = new Filesystem();
        $filesystem->copy($source, $target);
        $this->mustExec("git init", $target);
        $this->mustExec('git config user.email "scaffoldtest@example.com"', $target);
        $this->mustExec('git config user.name "Scaffold Test"', $target);
        $this->mustExec("git add .", $target);
        $this->mustExec("git commit -m 'Initial commit'", $target);
        $this->mustExec("git tag {$version}", $target);
        return $target;
    }

}