function GraphTest::assertComponents

Verify expected components in a graph.

@internal

Parameters

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

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

File

core/tests/Drupal/Tests/Component/Graph/GraphTest.php, line 154

Class

GraphTest

@coversDefaultClass \Drupal\Component\Graph\Graph @group Graph

Namespace

Code

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