function TermTest::testTaxonomyTermHierarchy

Tests terms in a single and multiple hierarchy.

File

core/modules/taxonomy/tests/src/Functional/TermTest.php, line 104

Class

TermTest

Tests load, save and delete for taxonomy terms.

Namespace

Code

public function testTaxonomyTermHierarchy() : void {
    // Create two taxonomy terms.
    $term1 = $this->createTerm($this->vocabulary);
    $term2 = $this->createTerm($this->vocabulary);
    // Get the taxonomy storage.
    
    /** @var \Drupal\taxonomy\TermStorageInterface $taxonomy_storage */
    $taxonomy_storage = $this->container
        ->get('entity_type.manager')
        ->getStorage('taxonomy_term');
    // Check that hierarchy is flat.
    $this->assertEquals(0, $taxonomy_storage->getVocabularyHierarchyType($this->vocabulary
        ->id()), 'Vocabulary is flat.');
    // Edit $term2, setting $term1 as parent.
    $edit = [];
    $edit['parent[]'] = [
        $term1->id(),
    ];
    $this->drupalGet('taxonomy/term/' . $term2->id() . '/edit');
    $this->submitForm($edit, 'Save');
    // Check the hierarchy.
    $children = $taxonomy_storage->loadChildren($term1->id());
    $parents = $taxonomy_storage->loadParents($term2->id());
    $this->assertTrue(isset($children[$term2->id()]), 'Child found correctly.');
    $this->assertTrue(isset($parents[$term1->id()]), 'Parent found correctly.');
    // Load and save a term, confirming that parents are still set.
    $term = Term::load($term2->id());
    $term->save();
    $parents = $taxonomy_storage->loadParents($term2->id());
    $this->assertTrue(isset($parents[$term1->id()]), 'Parent found correctly.');
    // Create a third term and save this as a parent of term2.
    $term3 = $this->createTerm($this->vocabulary);
    $term2->parent = [
        $term1->id(),
        $term3->id(),
    ];
    $term2->save();
    $parents = $taxonomy_storage->loadParents($term2->id());
    $this->assertArrayHasKey($term1->id(), $parents);
    $this->assertArrayHasKey($term3->id(), $parents);
}