Test terms in a single and multiple hierarchy.
function testTaxonomyTermHierarchy() {
// Create two taxonomy terms.
$term1 = $this
->createTerm($this->vocabulary);
$term2 = $this
->createTerm($this->vocabulary);
// Check that hierarchy is flat.
$vocabulary = taxonomy_vocabulary_load($this->vocabulary
->id());
$this
->assertEqual(0, $vocabulary->hierarchy, 'Vocabulary is flat.');
// Edit $term2, setting $term1 as parent.
$edit = array();
$edit['parent[]'] = array(
$term1
->id(),
);
$this
->drupalPost('taxonomy/term/' . $term2
->id() . '/edit', $edit, t('Save'));
// Check the hierarchy.
$children = taxonomy_term_load_children($term1
->id());
$parents = taxonomy_term_load_parents($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.
$term = taxonomy_term_load($term2
->id());
$term
->save();
$parents = taxonomy_term_load_parents($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 = array(
$term1
->id(),
$term3
->id(),
);
$term2
->save();
$parents = taxonomy_term_load_parents($term2
->id());
$this
->assertTrue(isset($parents[$term1
->id()]) && isset($parents[$term3
->id()]), 'Both parents found successfully.');
}