class ConfigInstallProfileUnmetDependenciesTest

class ConfigInstallProfileUnmetDependenciesTest extends InstallerTestBase {
    use RequirementsPageTrait;
    
    /**
     * The installation profile to install.
     *
     * @var string
     */
    protected $profile = 'testing_config_overrides';
    
    /**
     * Contains the expected exception if it is thrown.
     *
     * @var \Drupal\Core\Config\UnmetDependenciesException
     */
    protected $expectedException = FALSE;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function prepareEnvironment() : void {
        parent::prepareEnvironment();
        $this->copyTestingOverrides();
    }
    
    /**
     * {@inheritdoc}
     */
    public function setUpSettings() : void {
        // During set up an UnmetDependenciesException should be thrown, which will
        // be re-thrown by TestHttpClientMiddleware as a standard Exception.
        try {
            parent::setUpSettings();
        } catch (\Exception $exception) {
            $this->expectedException = $exception;
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function setUpSite() : void {
        // This step can no longer be reached.
    }
    
    /**
     * Copy the testing_config_overrides install profile.
     *
     * So we can change the configuration to include a dependency that can not be
     * met. File API functions are not available yet.
     */
    protected function copyTestingOverrides() : void {
        $dest = $this->siteDirectory . '/profiles/testing_config_overrides';
        mkdir($dest, 0777, TRUE);
        $source = DRUPAL_ROOT . '/core/profiles/testing_config_overrides';
        $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($source, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST);
        foreach ($iterator as $item) {
            if ($item->isDir()) {
                mkdir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
            }
            else {
                copy((string) $item, $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
            }
        }
        // Add a dependency that can not be met.
        $config_file = $dest . DIRECTORY_SEPARATOR . InstallStorage::CONFIG_INSTALL_DIRECTORY . DIRECTORY_SEPARATOR . 'system.action.user_block_user_action.yml';
        $action = Yaml::decode(file_get_contents($config_file));
        $action['dependencies']['module'][] = 'does_not_exist';
        file_put_contents($config_file, Yaml::encode($action));
    }
    
    /**
     * Confirms that the installation succeeded.
     */
    public function testInstalled() : void {
        if ($this->expectedException) {
            $this->assertStringContainsString('Configuration objects provided by <em class="placeholder">testing_config_overrides</em> have unmet dependencies: <em class="placeholder">system.action.user_block_user_action (does_not_exist)</em>', $this->expectedException
                ->getMessage());
            $this->assertStringContainsString('Drupal\\Core\\Config\\UnmetDependenciesException', $this->expectedException
                ->getMessage());
        }
        else {
            $this->fail('Expected Drupal\\Core\\Config\\UnmetDependenciesException exception not thrown');
        }
    }

}