class InstallerExistingSettingsTest

class InstallerExistingSettingsTest extends InstallerTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     *
     * Fully configures a preexisting settings.php file before invoking the
     * interactive installer.
     */
    protected function prepareEnvironment() {
        parent::prepareEnvironment();
        // Pre-configure hash salt.
        // Any string is valid, so simply use the class name of this test.
        $this->settings['settings']['hash_salt'] = (object) [
            'value' => __CLASS__,
            'required' => TRUE,
        ];
        // Pre-configure database credentials.
        $connection_info = Database::getConnectionInfo();
        unset($connection_info['default']['pdo']);
        unset($connection_info['default']['init_commands']);
        $this->settings['databases']['default'] = (object) [
            'value' => $connection_info,
            'required' => TRUE,
        ];
        // Use the kernel to find the site path because the site.path service should
        // not be available at this point in the install process.
        $site_path = DrupalKernel::findSitePath(Request::createFromGlobals());
        // Pre-configure config directories.
        $this->settings['settings']['config_sync_directory'] = (object) [
            'value' => $site_path . '/files/config_sync',
            'required' => TRUE,
        ];
        mkdir($this->settings['settings']['config_sync_directory']->value, 0777, TRUE);
    }
    
    /**
     * Visits the interactive installer.
     */
    protected function visitInstaller() {
        // Should redirect to the installer.
        $this->drupalGet($GLOBALS['base_url']);
        // Ensure no database tables have been created yet.
        $this->assertSame([], Database::getConnection()->schema()
            ->findTables('%'));
        $this->assertSession()
            ->addressEquals($GLOBALS['base_url'] . '/core/install.php');
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setUpSettings() {
        // This step should not appear, since settings.php is fully configured
        // already.
    }
    
    /**
     * Verifies that installation succeeded.
     */
    public function testInstaller() {
        $this->assertSession()
            ->addressEquals('user/1');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertEquals('testing', \Drupal::installProfile());
    }

}