FileExampleTest

class FileExampleTest extends DrupalWebTestCase {

  protected $privileged_user;

  public static function getInfo() {
    return array(
      'name' => 'File Example Functionality', 
      'description' => 'Test File Example features and sample streamwrapper.', 
      'group' => 'Examples',
    );
  }
  function setUp() {
    parent::setUp(array('file_example'));
    $privileged_user = $this->drupalCreateUser(array('use file example'));
    $this->drupalLogin($privileged_user);
  }

  /**
   * Test the basic File Example UI.
   * - Create a directory to work with
   * - Foreach scheme create and read files using each of the three methods.
   */
  function testFileExampleBasic() {

    $expected_text = array(
      t('Write managed file') => t('Saved managed file'), 
      t('Write unmanaged file') => t('Saved file as'), 
      t('Unmanaged using PHP') => t('Saved file as'),
    );
    // For each of the three buttons == three write types
    foreach (array(t('Write managed file'), t('Write unmanaged file'), t('Unmanaged using PHP')) as $button) {
      // For each scheme supported by Drupal + the session:// wrapper
      foreach (array('public', 'private', 'temporary', 'session') as $scheme) {
        // Create a directory for use.
        $dirname = $scheme . '://' . $this->randomName(10);

        // Directory does not yet exist; assert that.
        $edit = array(
          'directory_name' => $dirname,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if directory exists'));
        $this->assertRaw(t('Directory %dirname does not exist', array('%dirname' => $dirname)), t('Verify that directory does not exist.'));

        $this->drupalPost('examples/file_example/fileapi', $edit, t('Create directory'));
        $this->assertRaw(t('Directory %dirname is ready for use', array('%dirname' => $dirname)));

        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if directory exists'));
        $this->assertRaw(t('Directory %dirname exists', array('%dirname' => $dirname)), t('Verify that directory now does exist.'));

        // Create a file in the directory we created.
        $content = $this->randomName(30);
        $filename = $dirname . '/' . $this->randomName(30) . '.txt';

        // Assert that the file we're about to create does not yet exist.
        $edit = array(
          'fileops_file' => $filename,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if file exists'));
        $this->assertRaw(t('The file %filename does not exist', array('%filename' => $filename)), t('Verify that file does not yet exist.'));

        debug(t('Processing button=%button, scheme=%scheme, dir=%dirname, file=%filename', array('%button' => $button, '%scheme' => $scheme, '%filename' => $filename, '%dirname' => $dirname)));
        $edit = array(
          'write_contents' => $content, 
          'destination' => $filename,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, $button);
        $this->assertText($expected_text[$button]);


        // Capture the name of the output file, as it might have changed due
        // to file renaming.
        $element = $this->xpath('//span[@id="uri"]');
        $output_filename = (string) $element[0];
        debug($output_filename, 'Name of output file');

        // Click the link provided that is an easy way to get the data for
        // checking and make sure that the data we put in is what we get out.
        if (!in_array($scheme, array('private', 'temporary'))) {
          $this->clickLink(t('this URL'));
          $this->assertText($content);
        }

        // Verify that the file exists.
        $edit = array(
          'fileops_file' => $filename,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if file exists'));
        $this->assertRaw(t('The file %filename exists', array('%filename' => $filename)), t('Verify that file now exists.'));

        // Now read the file that got written above and verify that we can use
        // the writing tools.
        $edit = array(
          'fileops_file' => $output_filename,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Read the file and store it locally'));

        $this->assertText(t('The file was read and copied'));

        $edit = array(
          'fileops_file' => $filename,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Delete file'));
        $this->assertText(t('Successfully deleted'));
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if file exists'));
        $this->assertRaw(t('The file %filename does not exist', array('%filename' => $filename)), t('Verify file has been deleted.'));

        $edit = array(
          'directory_name' => $dirname,
        );
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Delete directory'));
        $this->drupalPost('examples/file_example/fileapi', $edit, t('Check to see if directory exists'));
        $this->assertRaw(t('Directory %dirname does not exist', array('%dirname' => $dirname)), t('Verify that directory does not exist after deletion.'));
      }
    }
  }
}