Symfony\Component\Form\Tests\CompoundFormTest::testGetErrorsDeepRecursive PHP Method

    public function testGetErrorsDeepRecursive()
    {
        $this->form->addError($error1 = new FormError('Error 1'));
        $this->form->addError($error2 = new FormError('Error 2'));

        $childForm = $this->getBuilder('Child')->getForm();
        $childForm->addError($nestedError = new FormError('Nested Error'));
        $this->form->add($childForm);

        $errors = $this->form->getErrors(true, false);

        $this->assertSame(
             "ERROR: Error 1\n".
             "ERROR: Error 2\n".
             "Child:\n".
             "    ERROR: Nested Error\n",
             (string) $errors
        );

        $errorsAsArray = iterator_to_array($errors);

        $this->assertSame($error1, $errorsAsArray[0]);
        $this->assertSame($error2, $errorsAsArray[1]);
        $this->assertInstanceOf('Symfony\Component\Form\FormErrorIterator', $errorsAsArray[2]);

        $nestedErrorsAsArray = iterator_to_array($errorsAsArray[2]);

        $this->assertCount(1, $nestedErrorsAsArray);
        $this->assertSame($nestedError, $nestedErrorsAsArray[0]);
    }