function GraphTest::assertReversePaths

Verify expected reverse paths in a graph.

Parameters

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

$expected_reverse_paths: An associative array containing vertices with their expected reverse paths.

File

core/tests/Drupal/Tests/Component/Graph/GraphTest.php, line 127

Class

GraphTest

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

Namespace

Code

protected function assertReversePaths($graph, $expected_reverse_paths) {
    foreach ($expected_reverse_paths as $vertex => $paths) {
        // Build an array with keys = $paths and values = TRUE.
        $expected = array_fill_keys($paths, TRUE);
        $result = isset($graph[$vertex]['reverse_paths']) ? $graph[$vertex]['reverse_paths'] : [];
        $this->assertEquals($expected, $result, sprintf('Expected reverse paths for vertex %s: %s, got %s', $vertex, $this->displayArray($expected, TRUE), $this->displayArray($result, TRUE)));
    }
}