/**
     * Method to test deleteAllRelatives().
     *
     * @return void
     *
     * @covers Windwalker\Relation\Handler\AbstractRelationHandler::deleteAllRelatives
     */
    public function testDeleteAllRelatives()
    {
        $db = new MockDatabaseDriver();
        $this->instance->setDb($db);
        $this->instance->deleteAllRelatives();
        $sql = <<<SQL
DELETE
FROM #__testflower_roses
WHERE foo_id = 'Foo'
AND bar_id = 'Bar'
SQL;
        $this->assertStringDataEquals($sql, $db->lastQuery);
    }