Tests a file field with a "Private files" upload destination setting.
function testPrivateFileSetting() {
$type_name = 'article';
$field_name = strtolower($this
->randomName());
$this
->createFileField($field_name, $type_name);
$instance = field_info_instance('node', $field_name, $type_name);
$test_file = $this
->getTestFile('text');
// Change the field setting to make its files private, and upload a file.
$edit = array(
'field[settings][uri_scheme]' => 'private',
);
$this
->drupalPost("admin/structure/types/manage/{$type_name}/fields/{$instance->id}/field", $edit, t('Save field settings'));
$nid = $this
->uploadNodeFile($test_file, $field_name, $type_name);
$node = node_load($nid, TRUE);
$node_file = file_load($node->{$field_name}[Language::LANGCODE_NOT_SPECIFIED][0]['fid']);
$this
->assertFileExists($node_file, t('New file saved to disk on node creation.'));
// Ensure the private file is available to the user who uploaded it.
$this
->drupalGet(file_create_url($node_file->uri));
$this
->assertResponse(200, t('Confirmed that the generated URL is correct by downloading the shipped file.'));
// Ensure we can't change 'uri_scheme' field settings while there are some
// entities with uploaded files.
$this
->drupalGet("admin/structure/types/manage/{$type_name}/fields/{$instance->id}/field");
$this
->assertFieldByXpath('//input[@id="edit-field-settings-uri-scheme-public" and @disabled="disabled"]', 'public', t('Upload destination setting disabled.'));
// Delete node and confirm that setting could be changed.
$node
->delete();
$this
->drupalGet("admin/structure/types/manage/{$type_name}/fields/{$instance->id}/field");
$this
->assertFieldByXpath('//input[@id="edit-field-settings-uri-scheme-public" and not(@disabled)]', 'public', t('Upload destination setting enabled.'));
}