- $this->assertIdentical(['node', 'tags'], $this->getMigration('d6_vocabulary_field')->getIdMap()->lookupDestinationID([4]), "Test IdMap");
+ $this->assertSame(['node', 'field_tags'], $this->getMigration('d6_vocabulary_field')->getIdMap()->lookupDestinationID([4]), "Test IdMap");
+
+ // Tests that a vocabulary named like a D8 base field will be migrated and
+ // prefixed with 'field_' to avoid conflicts.
+ $field_type = FieldStorageConfig::load('node.field_type');
+ $this->assertInstanceOf(FieldStorageConfig::class, $field_type);