protected function GraphTest::assertComponents

Verify expected components in a graph.

Parameters

$graph: A graph array processed by \Drupal\Component\Graph\Graph::searchAndSort().

$expected_components: An array containing of components defined as a list of their vertices.

File

drupal/core/tests/Drupal/Tests/Component/Graph/GraphTest.php, line 159

Contains \Drupal\Tests\Component\Graph\GraphTest.

Class

GraphTest

Unit tests for the graph handling features.

Namespace

Code

protected function assertComponents($graph, $expected_components) {
  $unassigned_vertices = array_fill_keys(array_keys($graph), TRUE);
  foreach ($expected_components as $component) {
    $result_components = array();
    foreach ($component as $vertex) {
      $result_components[] = $graph[$vertex]['component'];
      unset($unassigned_vertices[$vertex]);
    }
    $this
      ->assertEquals(1, count(array_unique($result_components)), sprintf('Expected one unique component for vertices %s, got %s', $this
      ->displayArray($component), $this
      ->displayArray($result_components)));
  }
  $this
    ->assertEquals(array(), $unassigned_vertices, sprintf('Vertices not assigned to a component: %s', $this
    ->displayArray($unassigned_vertices, TRUE)));
}