| 1 file.test | FileTestCase::createDirectory($path = NULL) | 
Create a directory and assert it exists.
Parameters
$path: Optional string with a directory path. If none is provided, a random name in the site's files directory will be used.
Return value
The path to the directory.:
File
- core/modules/ simpletest/ tests/ file.test, line 175 
- This provides SimpleTests for the core file handling functionality. These include FileValidateTest and FileSaveTest.
Class
- FileTestCase
- Base class for file tests that adds some additional file specific assertions and helper functions.
Code
function createDirectory($path = NULL) {
  // A directory to operate on.
  if (!isset($path)) {
    $path = file_default_scheme() . '://' . $this->randomName();
  }
  $this->assertTrue(backdrop_mkdir($path) && is_dir($path), 'Directory was created successfully.');
  return $path;
}
