| 1 file.test | FileUnmanagedDeleteRecursiveTest::testSubDirectory() | 
Try deleting subdirectories with some files.
File
- core/modules/ simpletest/ tests/ file.test, line 1524 
- This provides SimpleTests for the core file handling functionality. These include FileValidateTest and FileSaveTest.
Class
- FileUnmanagedDeleteRecursiveTest
- Deletion related tests.
Code
function testSubDirectory() {
  // A directory to operate on.
  $directory = $this->createDirectory();
  $subdirectory = $this->createDirectory($directory . '/sub');
  $filepathA = $directory . '/A';
  $filepathB = $subdirectory . '/B';
  file_put_contents($filepathA, '');
  file_put_contents($filepathB, '');
  // Delete the directory.
  $this->assertTrue(file_unmanaged_delete_recursive($directory), 'Function reported success.');
  $this->assertFalse(file_exists($filepathA), 'Test file A has been deleted.');
  $this->assertFalse(file_exists($filepathB), 'Test file B has been deleted.');
  $this->assertFalse(file_exists($subdirectory), 'Subdirectory has been deleted.');
  $this->assertFalse(file_exists($directory), 'Directory has been deleted.');
}
