function ConfigDiffTest::testDiff

Tests calculating the difference between two sets of configuration.

File

drupal/core/modules/config/lib/Drupal/config/Tests/ConfigDiffTest.php, line 35
Contains \Drupal\config\Tests\ConfigDiffTest.

Class

ConfigDiffTest
Tests config snapshot creation and updating.

Namespace

Drupal\config\Tests

Code

function testDiff() {
  $active = $this->container
    ->get('config.storage');
  $staging = $this->container
    ->get('config.storage.staging');
  $config_name = 'config_test.system';
  $change_key = 'foo';
  $remove_key = '404';
  $add_key = 'biff';
  $add_data = 'bangpow';
  $change_data = 'foobar';
  $original_data = array(
    'foo' => 'bar',
    '404' => 'herp',
  );

  // Install the default config.
  config_install_default_config('module', 'config_test');

  // Change a configuration value in staging.
  $staging_data = $original_data;
  $staging_data[$change_key] = $change_data;
  $staging_data[$add_key] = $add_data;
  $staging
    ->write($config_name, $staging_data);

  // Verify that the diff reflects a change.
  $diff = config_diff($active, $staging, $config_name);
  $this
    ->assertEqual($diff->edits[0]->type, 'change', 'The first item in the diff is a change.');
  $this
    ->assertEqual($diff->edits[0]->orig[0], $change_key . ': ' . $original_data[$change_key], format_string("The active value for key '%change_key' is '%original_data'.", array(
    '%change_key' => $change_key,
    '%original_data' => $original_data[$change_key],
  )));
  $this
    ->assertEqual($diff->edits[0]->closing[0], $change_key . ': ' . $change_data, format_string("The staging value for key '%change_key' is '%change_data'.", array(
    '%change_key' => $change_key,
    '%change_data' => $change_data,
  )));

  // Reset data back to original, and remove a key
  $staging_data = $original_data;
  unset($staging_data[$remove_key]);
  $staging
    ->write($config_name, $staging_data);

  // Verify that the diff reflects a removed key.
  $diff = config_diff($active, $staging, $config_name);
  $this
    ->assertEqual($diff->edits[0]->type, 'copy', 'The first item in the diff is a copy.');
  $this
    ->assertEqual($diff->edits[1]->type, 'delete', 'The second item in the diff is a delete.');
  $this
    ->assertEqual($diff->edits[1]->orig[0], $remove_key . ': ' . $original_data[$remove_key], format_string("The active value for key '%remove_key' is '%original_data'.", array(
    '%remove_key' => $remove_key,
    '%original_data' => $original_data[$remove_key],
  )));
  $this
    ->assertFalse($diff->edits[1]->closing, format_string("The key '%remove_key' does not exist in staging.", array(
    '%remove_key' => $remove_key,
  )));

  // Reset data back to original and add a key
  $staging_data = $original_data;
  $staging_data[$add_key] = $add_data;
  $staging
    ->write($config_name, $staging_data);

  // Verify that the diff reflects an added key.
  $diff = config_diff($active, $staging, $config_name);
  $this
    ->assertEqual($diff->edits[0]->type, 'copy', 'The first item in the diff is a copy.');
  $this
    ->assertEqual($diff->edits[1]->type, 'add', 'The second item in the diff is an add.');
  $this
    ->assertFalse($diff->edits[1]->orig, format_string("The key '%add_key' does not exist in active.", array(
    '%add_key' => $add_key,
  )));
  $this
    ->assertEqual($diff->edits[1]->closing[0], $add_key . ': ' . $add_data, format_string("The staging value for key '%add_key' is '%add_data'.", array(
    '%add_key' => $add_key,
    '%add_data' => $add_data,
  )));
}