class MigrateTaxonomyTermTranslationTest

class MigrateTaxonomyTermTranslationTest extends MigrateDrupal6TestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'content_translation',
        'language',
        'menu_ui',
        'node',
        'taxonomy',
    ];
    
    /**
     * The cached taxonomy tree items, keyed by vid and tid.
     *
     * @var array
     */
    protected $treeData = [];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('taxonomy_term');
        $this->installConfig(static::$modules);
        $this->executeMigrations([
            'language',
            'd6_node_type',
            'd6_field',
            'd6_taxonomy_vocabulary',
            'd6_field_instance',
            'd6_taxonomy_term',
            'd6_taxonomy_term_translation',
        ]);
    }
    
    /**
     * Validate a migrated term contains the expected values.
     *
     * @param int $id
     *   Entity ID to load and check.
     * @param string $expected_language
     *   The language code for this term.
     * @param string $expected_label
     *   The label the migrated entity should have.
     * @param string $expected_vid
     *   The parent vocabulary the migrated entity should have.
     * @param string $expected_description
     *   The description the migrated entity should have.
     * @param string $expected_format
     *   The format the migrated entity should have.
     * @param int $expected_weight
     *   The weight the migrated entity should have.
     * @param array $expected_parents
     *   The parent terms the migrated entity should have.
     * @param int $expected_field_integer_value
     *   The value the migrated entity field should have.
     * @param int $expected_term_reference_tid
     *   The term reference ID the migrated entity field should have.
     *
     * @internal
     */
    protected function assertEntity(int $id, string $expected_language, string $expected_label, string $expected_vid, string $expected_description = '', ?string $expected_format = NULL, int $expected_weight = 0, array $expected_parents = [], ?int $expected_field_integer_value = NULL, ?int $expected_term_reference_tid = NULL) : void {
        
        /** @var \Drupal\taxonomy\TermInterface $entity */
        $entity = Term::load($id);
        $this->assertInstanceOf(TermInterface::class, $entity);
        $this->assertSame($expected_language, $entity->language()
            ->getId());
        $this->assertSame($expected_label, $entity->label());
        $this->assertSame($expected_vid, $entity->bundle());
        $this->assertSame($expected_description, $entity->getDescription());
        $this->assertSame($expected_format, $entity->getFormat());
        $this->assertSame($expected_weight, $entity->getWeight());
        $this->assertHierarchy($expected_vid, $id, $expected_parents);
    }
    
    /**
     * Assert that a term is present in the tree storage, with the right parents.
     *
     * @param string $vid
     *   Vocabulary ID.
     * @param int $tid
     *   ID of the term to check.
     * @param array $parent_ids
     *   The expected parent term IDs.
     *
     * @internal
     */
    protected function assertHierarchy(string $vid, int $tid, array $parent_ids) : void {
        if (!isset($this->treeData[$vid])) {
            $tree = \Drupal::entityTypeManager()->getStorage('taxonomy_term')
                ->loadTree($vid);
            $this->treeData[$vid] = [];
            foreach ($tree as $item) {
                $this->treeData[$vid][$item->tid] = $item;
            }
        }
        $this->assertArrayHasKey($tid, $this->treeData[$vid], "Term {$tid} exists in taxonomy tree");
        $term = $this->treeData[$vid][$tid];
        // PostgreSQL, MySQL and SQLite may not return the parent terms in the same
        // order so sort before testing.
        sort($parent_ids);
        $actual_terms = array_filter($term->parents);
        sort($actual_terms);
        $this->assertEquals($parent_ids, $actual_terms, "Term {$tid} has correct parents in taxonomy tree");
    }
    
    /**
     * Tests the Drupal 6 i18n taxonomy term to Drupal 8 migration.
     */
    public function testTranslatedTaxonomyTerms() : void {
        $this->assertEntity(1, 'zu', 'zu - term 1 of vocabulary 1', 'vocabulary_1_i_0_', 'zu - description of term 1 of vocabulary 1', NULL, 0, []);
        $this->assertEntity(2, 'fr', 'fr - term 2 of vocabulary 2', 'vocabulary_2_i_1_', 'fr - description of term 2 of vocabulary 2', NULL, 3, []);
        $this->assertEntity(3, 'fr', 'fr - term 3 of vocabulary 2', 'vocabulary_2_i_1_', 'fr - description of term 3 of vocabulary 2', NULL, 4, [
            '2',
        ]);
        $this->assertEntity(4, 'en', 'term 4 of vocabulary 3', 'vocabulary_3_i_2_', 'description of term 4 of vocabulary 3', NULL, 6, []);
        $this->assertEntity(5, 'en', 'term 5 of vocabulary 3', 'vocabulary_3_i_2_', 'description of term 5 of vocabulary 3', NULL, 7, [
            '4',
        ]);
        $this->assertEntity(6, 'en', 'term 6 of vocabulary 3', 'vocabulary_3_i_2_', 'description of term 6 of vocabulary 3', NULL, 8, [
            '4',
            '5',
        ]);
        $this->assertEntity(7, 'fr', 'fr - term 2 of vocabulary 1', 'vocabulary_1_i_0_', 'fr - desc of term 2 vocab 1', NULL, 0, []);
    }

}