<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Tests\Component\Form;

require_once __DIR__ . '/TestCase.php';
require_once __DIR__ . '/Fixtures/Author.php';
require_once __DIR__ . '/Fixtures/TestForm.php';

use Symfony\Component\Form\Form;
use Symfony\Component\Form\FormContext;
use Symfony\Component\Form\Field;
use Symfony\Component\Form\FieldError;
use Symfony\Component\Form\DataError;
use Symfony\Component\Form\HiddenField;
use Symfony\Component\Form\PropertyPath;
use Symfony\Component\Form\DataTransformer\CallbackTransformer;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\File\UploadedFile;
use Symfony\Component\Validator\ConstraintViolation;
use Symfony\Component\Validator\ConstraintViolationList;
use Symfony\Component\Validator\ExecutionContext;
use Symfony\Tests\Component\Form\Fixtures\Author;
use Symfony\Tests\Component\Form\Fixtures\TestForm;

class FormTest_PreconfiguredForm extends Form
{
    protected function configure()
    {
        $this->add($this->factory->create('field', 'firstName'));

        parent::configure();
    }
}

class FormTest_AuthorWithoutRefSetter
{
    protected $reference;

    protected $referenceCopy;

    public function __construct($reference)
    {
        $this->reference = $reference;
        $this->referenceCopy = $reference;
    }

    // The returned object should be modified by reference without having
    // to provide a setReference() method
    public function getReference()
    {
        return $this->reference;
    }

    // The returned object is a copy, so setReferenceCopy() must be used
    // to update it
    public function getReferenceCopy()
    {
        return is_object($this->referenceCopy) ? clone $this->referenceCopy : $this->referenceCopy;
    }

    public function setReferenceCopy($reference)
    {
        $this->referenceCopy = $reference;
    }
}

class TestSetDataBeforeConfigureForm extends Form
{
    protected $testCase;
    protected $object;

    public function __construct($testCase, $name, $object, $validator)
    {
        $this->testCase = $testCase;
        $this->object = $object;

        parent::__construct($name, $object, $validator);
    }

    protected function configure()
    {
        $this->testCase->assertEquals($this->object, $this->getData());

        parent::configure();
    }
}

class FormTest extends TestCase
{
    protected $form;

    public static function setUpBeforeClass()
    {
        @session_start();
    }

    protected function setUp()
    {
        parent::setUp();

        $this->form = $this->factory->create('form', 'author');
    }

    public function testCsrfProtectionByDefault()
    {
        $builder =  $this->factory->createBuilder('form', 'author');
        $form = $builder->getInstance();

        $this->assertTrue($builder->hasCsrfProtection());
        $this->assertTrue($form->has($builder->getCsrfFieldName()));
    }

    public function testCsrfProtectionCanBeDisabled()
    {
        $form =  $this->factory->create('form', 'author', array(
            'csrf_protection' => false,
        ));

        $this->assertEquals(0, count($form));
    }

    public function testCsrfFieldNameCanBeSet()
    {
        $form =  $this->factory->create('form', 'author', array(
            'csrf_field_name' => 'foobar',
        ));

        $this->assertTrue($form->has('foobar'));
        $this->assertEquals(1, count($form));
    }

    public function testCsrfProtectedFormsHaveExtraField()
    {
        $this->markTestSkipped('CSRF protection needs to be fixed');

        $provider = $this->createMockCsrfProvider();
        $provider->expects($this->once())
        ->method('generateCsrfToken')
        ->with($this->equalTo('Symfony\Component\Form\Form'))
        ->will($this->returnValue('ABCDEF'));

        $form = $this->factory->create('form', 'author', array(
            'csrf_provider' => $provider,
        ));

        $this->assertTrue($form->has($this->form->getCsrfFieldName()));

        $field = $form->get($form->getCsrfFieldName());

        $this->assertTrue($field instanceof HiddenField);
        $this->assertEquals('ABCDEF', $field->getClientData());
    }

    public function testIsCsrfTokenValidPassesIfCsrfProtectionIsDisabled()
    {
        $this->markTestSkipped('CSRF protection needs to be fixed');

        $this->form->bind(array());

        $this->assertTrue($this->form->isCsrfTokenValid());
    }

    public function testIsCsrfTokenValidPasses()
    {
        $this->markTestSkipped('CSRF protection needs to be fixed');

        $provider = $this->createMockCsrfProvider();
        $provider->expects($this->once())
        ->method('isCsrfTokenValid')
        ->with($this->equalTo('Symfony\Component\Form\Form'), $this->equalTo('ABCDEF'))
        ->will($this->returnValue(true));

        $form = $this->factory->create('form', 'author', array(
            'csrf_provider' => $provider,
            'validator' => $this->validator,
        ));

        $field = $form->getCsrfFieldName();

        $form->bind(array($field => 'ABCDEF'));

        $this->assertTrue($form->isCsrfTokenValid());
    }

    public function testIsCsrfTokenValidFails()
    {
        $this->markTestSkipped('CSRF protection needs to be fixed');

        $provider = $this->createMockCsrfProvider();
        $provider->expects($this->once())
        ->method('isCsrfTokenValid')
        ->with($this->equalTo('Symfony\Component\Form\Form'), $this->equalTo('ABCDEF'))
        ->will($this->returnValue(false));

        $form = $this->factory->create('form', 'author', array(
            'csrf_provider' => $provider,
            'validator' => $this->validator,
        ));

        $field = $form->getCsrfFieldName();

        $form->bind(array($field => 'ABCDEF'));

        $this->assertFalse($form->isCsrfTokenValid());
    }

    public function testValidationGroupNullByDefault()
    {
        $this->assertNull($this->form->getAttribute('validation_groups'));
    }

    public function testValidationGroupsCanBeSetToString()
    {
        $form = $this->factory->create('form', 'author', array(
            'validation_groups' => 'group',
        ));

        $this->assertEquals(array('group'), $form->getAttribute('validation_groups'));
    }

    public function testValidationGroupsCanBeSetToArray()
    {
        $form = $this->factory->create('form', 'author', array(
            'validation_groups' => array('group1', 'group2'),
        ));

        $this->assertEquals(array('group1', 'group2'), $form->getAttribute('validation_groups'));
    }

    public function testBindValidatesData()
    {
        $builder = $this->factory->createBuilder('form', 'author', array(
            'validation_groups' => 'group',
        ));
        $builder->add('firstName', 'field');
        $form = $builder->getInstance();

        $this->validator->expects($this->once())
            ->method('validate')
            ->with($this->equalTo($form));

        // specific data is irrelevant
        $form->bind(array());
    }

    public function testBindDoesNotValidateArrays()
    {
        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $form = $builder->getInstance();

        // only the form is validated
        $this->validator->expects($this->once())
        ->method('validate')
        ->with($this->equalTo($form));

        // specific data is irrelevant
        $form->bind(array());
    }

    public function testBindReadsRequestData()
    {
        $path = tempnam(sys_get_temp_dir(), 'sf2');
        touch($path);

        $values = array(
            'author' => array(
                'name' => 'Bernhard',
                'image' => array('filename' => 'foobar.png'),
            ),
        );

        $files = array(
            'author' => array(
                'error' => array('image' => array('file' => UPLOAD_ERR_OK)),
                'name' => array('image' => array('file' => 'upload.png')),
                'size' => array('image' => array('file' => 123)),
                'tmp_name' => array('image' => array('file' => $path)),
                'type' => array('image' => array('file' => 'image/png')),
            ),
        );

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('name', 'field');
        $builder->add('image', 'form');
        $builder->get('image')->add('file', 'field');
        $builder->get('image')->add('filename', 'field');
        $form = $builder->getInstance();

        $form->bindRequest($this->createPostRequest($values, $files));

        $file = new UploadedFile($path, 'upload.png', 'image/png', 123, UPLOAD_ERR_OK);

        $this->assertEquals('Bernhard', $form['name']->getData());
        $this->assertEquals('foobar.png', $form['image']['filename']->getData());
        $this->assertEquals($file, $form['image']['file']->getData());
    }

    public function testSupportsArrayAccess()
    {
        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $form = $builder->getInstance();

        $this->assertEquals($form->get('firstName'), $form['firstName']);
        $this->assertTrue(isset($form['firstName']));
    }

    /**
     * @expectedException BadMethodCallException
     */
    public function testSupportsUnset()
    {
        $form = $this->factory->create('form', 'author');

        unset($form['firstName']);
    }

    public function testDoesNotSupportAddingFields()
    {
        $form = $this->factory->create('form', 'author');

        $this->setExpectedException('LogicException');

        $form[] = $this->createMockField('lastName');
    }

    public function testSupportsCountable()
    {
        $builder = $this->factory->createBuilder('form', 'group', array(
            'csrf_protection' => false,
        ));
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field');
        $form = $builder->getInstance();

        $this->assertEquals(2, count($form));
    }

    public function testSupportsIterable()
    {
        $builder = $this->factory->createBuilder('form', 'group', array(
            'csrf_protection' => false,
        ));
        $builder->add('field1', 'field');
        $builder->add('field2', 'field');
        $builder->add('field3', 'field');
        $form = $builder->getInstance();

        $expected = array(
            'field1' => $form->get('field1'),
            'field2' => $form->get('field2'),
            'field3' => $form->get('field3'),
        );

        $this->assertEquals($expected, iterator_to_array($form));
    }

    public function testIsBound()
    {
        $form = $this->factory->create('form', 'author');
        $this->assertFalse($form->isBound());
        $form->bind(array('firstName' => 'Bernhard'));
        $this->assertTrue($form->isBound());
    }

    public function testValidIfAllFieldsAreValid()
    {
        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field');
        $form = $builder->getInstance();

        $form->bind(array('firstName' => 'Bernhard', 'lastName' => 'Potencier'));

        $this->assertTrue($form->isValid());
    }

    public function testInvalidIfFieldIsInvalid()
    {
        $this->markTestSkipped('How to force an invalid field?');

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field'); // how to make invalid?
        $form = $builder->getInstance();

        $form->bind(array('firstName' => 'Bernhard', 'lastName' => 'Potencier'));

        $this->assertFalse($form->isValid());
    }

    public function testInvalidIfBoundWithExtraFields()
    {
        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field');
        $form = $builder->getInstance();

        $form->bind(array('foo' => 'bar', 'firstName' => 'Bernhard', 'lastName' => 'Potencier'));

        $this->assertTrue($form->isBoundWithExtraFields());
    }

    public function testHasNoErrorsIfOnlyFieldHasErrors()
    {
        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('firstName', 'field');
        $form = $builder->getInstance();

        $form->bind(array('firstName' => 'Bernhard'));

        $this->assertFalse($form->hasErrors());
    }

    public function testSubmitForwardsNullIfValueIsMissing()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('firstName');
        $field->expects($this->once())
            ->method('bind')
            ->with($this->equalTo(null));

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $form->bind(array());
    }

    public function testAddErrorMapsFieldValidationErrorsOntoFields()
    {
        $this->markTestSkipped('Currently does not work');

        $error = new FieldError('Message');

        $field = $this->createMockField('firstName');
        $field->expects($this->once())
        ->method('addError')
        ->with($this->equalTo($error));

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('fields[firstName].data');

        $form->addError(new FieldError('Message'), $path->getIterator());
    }

    public function testAddErrorMapsFieldValidationErrorsOntoFieldsWithinNestedForms()
    {
        $this->markTestSkipped('Currently does not work');

        $error = new FieldError('Message');

        $field = $this->createMockField('firstName');
        $field->expects($this->once())
        ->method('addError')
        ->with($this->equalTo($error));

        $form = $this->factory->create('form', 'author');
        $innerGroup = $this->factory->create('form', 'names');
        $innerGroup->add($field);
        $form->add($innerGroup);

        $path = new PropertyPath('fields[names].fields[firstName].data');

        $form->addError(new FieldError('Message'), $path->getIterator());
    }

    public function testAddErrorKeepsFieldValidationErrorsIfFieldNotFound()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('foo');
        $field->expects($this->never())
        ->method('addError');

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('fields[bar].data');

        $form->addError(new FieldError('Message'), $path->getIterator());

        $this->assertEquals(array(new FieldError('Message')), $form->getErrors());
    }

    public function testAddErrorKeepsFieldValidationErrorsIfFieldIsHidden()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('firstName');
        $field->expects($this->any())
        ->method('isHidden')
        ->will($this->returnValue(true));
        $field->expects($this->never())
        ->method('addError');

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('fields[firstName].data');

        $form->addError(new FieldError('Message'), $path->getIterator());

        $this->assertEquals(array(new FieldError('Message')), $form->getErrors());
    }

    public function testAddErrorMapsDataValidationErrorsOntoFields()
    {
        $this->markTestSkipped('Currently does not work');

        $error = new DataError('Message');

        // path is expected to point at "firstName"
        $expectedPath = new PropertyPath('firstName');
        $expectedPathIterator = $expectedPath->getIterator();

        $field = $this->createMockField('firstName');
        $field->expects($this->any())
        ->method('getPropertyPath')
        ->will($this->returnValue(new PropertyPath('firstName')));
        $field->expects($this->once())
        ->method('addError')
        ->with($this->equalTo($error), $this->equalTo($expectedPathIterator));

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('firstName');

        $form->addError($error, $path->getIterator());
    }

    public function testAddErrorKeepsDataValidationErrorsIfFieldNotFound()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('foo');
        $field->expects($this->any())
        ->method('getPropertyPath')
        ->will($this->returnValue(new PropertyPath('foo')));
        $field->expects($this->never())
        ->method('addError');

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('bar');

        $form->addError(new DataError('Message'), $path->getIterator());
    }

    public function testAddErrorKeepsDataValidationErrorsIfFieldIsHidden()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('firstName');
        $field->expects($this->any())
        ->method('isHidden')
        ->will($this->returnValue(true));
        $field->expects($this->any())
        ->method('getPropertyPath')
        ->will($this->returnValue(new PropertyPath('firstName')));
        $field->expects($this->never())
        ->method('addError');

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('firstName');

        $form->addError(new DataError('Message'), $path->getIterator());
    }

    public function testAddErrorMapsDataValidationErrorsOntoNestedFields()
    {
        $this->markTestSkipped('Currently does not work');

        $error = new DataError('Message');

        // path is expected to point at "street"
        $expectedPath = new PropertyPath('address.street');
        $expectedPathIterator = $expectedPath->getIterator();
        $expectedPathIterator->next();

        $field = $this->createMockField('address');
        $field->expects($this->any())
        ->method('getPropertyPath')
        ->will($this->returnValue(new PropertyPath('address')));
        $field->expects($this->once())
        ->method('addError')
        ->with($this->equalTo($error), $this->equalTo($expectedPathIterator));

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $path = new PropertyPath('address.street');

        $form->addError($error, $path->getIterator());
    }

    public function testAddErrorMapsErrorsOntoFieldsInVirtualGroups()
    {
        $this->markTestSkipped('Currently does not work');

        $error = new DataError('Message');

        // path is expected to point at "address"
        $expectedPath = new PropertyPath('address');
        $expectedPathIterator = $expectedPath->getIterator();

        $field = $this->createMockField('address');
        $field->expects($this->any())
        ->method('getPropertyPath')
        ->will($this->returnValue(new PropertyPath('address')));
        $field->expects($this->once())
        ->method('addError')
        ->with($this->equalTo($error), $this->equalTo($expectedPathIterator));

        $form = $this->factory->create('form', 'author');
        $nestedForm = $this->factory->create('form', 'nested', array('virtual' => true));
        $nestedForm->add($field);
        $form->add($nestedForm);

        $path = new PropertyPath('address');

        $form->addError($error, $path->getIterator());
    }

    public function testAddSetsFieldParent()
    {
        $this->markTestSkipped('Currently does not work');

        $form = $this->factory->create('form', 'author');

        $field = $this->createMockField('firstName');
        $field->expects($this->once())
        ->method('setParent')
        ->with($this->equalTo($form));

        $form->add($field);
    }

    public function testSetDataUpdatesAllFieldsFromTransformedData()
    {
        $originalAuthor = new Author();
        $transformedAuthor = new Author();
        $transformedAuthor->firstName = 'Foo';
        $transformedAuthor->setLastName('Bar');

        $transformer = $this->createMockTransformer();
        $transformer->expects($this->at(0))
            ->method('transform')
            ->with($this->equalTo(null))
            ->will($this->returnValue(''));
        $transformer->expects($this->at(1))
            ->method('transform')
            ->with($this->equalTo($originalAuthor))
            ->will($this->returnValue($transformedAuthor));

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->setClientTransformer($transformer);
        $builder->setData($originalAuthor);
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field');
        $form = $builder->getInstance();

        $this->assertEquals('Foo', $form['firstName']->getData());
        $this->assertEquals('Bar', $form['lastName']->getData());
    }

    /**
     * The use case for this test are groups whose fields should be mapped
     * directly onto properties of the form's object.
     *
     * Example:
     *
     * <code>
     * $dateRangeField = $this->factory->create('form', 'dateRange');
     * $dateRangeField->add(new DateField('startDate'));
     * $dateRangeField->add(new DateField('endDate'));
     * $form->add($dateRangeField);
     * </code>
     *
     * If $dateRangeField is not virtual, the property "dateRange" must be
     * present on the form's object. In this property, an object or array
     * with the properties "startDate" and "endDate" is expected.
     *
     * If $dateRangeField is virtual though, it's children are mapped directly
     * onto the properties "startDate" and "endDate" of the form's object.
     */
    public function testSetDataSkipsVirtualForms()
    {
        $author = new Author();
        $author->firstName = 'Foo';
        $author->setLastName('Bar');

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->setData($author);
        $builder->add('personalData', 'form', array(
            'virtual' => true,
        ));
        // both fields are in the nested group but receive the object of the
        // top-level group because the nested group is virtual
        $builder->get('personalData')->add('firstName', 'field');
        $builder->get('personalData')->add('lastName', 'field');
        $form = $builder->getInstance();

        $this->assertEquals('Foo', $form['personalData']['firstName']->getData());
        $this->assertEquals('Bar', $form['personalData']['lastName']->getData());
    }

    public function testSetDataThrowsAnExceptionIfArgumentIsNotObjectOrArray()
    {
        $form = $this->factory->create('form', 'author');

        $this->setExpectedException('InvalidArgumentException');

        $form->setData('foobar');
    }

    /**
     * @expectedException Symfony\Component\Form\Exception\FormException
     */
    public function testSetDataMatchesAgainstDataClass_fails()
    {
        $form = $this->factory->create('form', 'author', array(
            'data_class' => 'Symfony\Tests\Component\Form\Fixtures\Author',
        ));

        $form->setData(new \stdClass());
    }

    public function testSetDataMatchesAgainstDataClass_succeeds()
    {
        $form = $this->factory->create('form', 'author', array(
            'data_class' => 'Symfony\Tests\Component\Form\Fixtures\Author',
        ));

        $form->setData(new Author());
    }

    public function testSetDataToNullCreatesObjectIfClassAvailable()
    {
        $form = $this->factory->create('form', 'author', array(
            'data_class' => 'Symfony\Tests\Component\Form\Fixtures\Author',
        ));
        $form->setData(null);

        $this->assertEquals(new Author(), $form->getData());
    }

    public function testSetDataToNullUsesDataConstructorOption()
    {
        $author = new Author();
        $form = $this->factory->create('form', 'author', array(
            'data_constructor' => function () use ($author) {
                return $author;
            }
        ));

        $form->setData(null);

        $this->assertSame($author, $form->getData());
    }

    /*
     * We need something to write the field values into
     */
    public function testSetDataToNullCreatesArrayIfNoDataClassOrConstructor()
    {
        $author = new Author();
        $form = $this->factory->create('form', 'author');
        $form->setData(null);

        $this->assertSame(array(), $form->getData());
    }

    public function testSubmitUpdatesTransformedDataFromAllFields()
    {
        $originalAuthor = new Author();
        $transformedAuthor = new Author();

        $transformer = $this->createMockTransformer();
        $transformer->expects($this->at(0))
            ->method('transform')
            ->with($this->equalTo(null))
            ->will($this->returnValue(''));
        $transformer->expects($this->at(1))
            ->method('transform')
            ->with($this->equalTo($originalAuthor))
            ->will($this->returnValue($transformedAuthor));

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->setClientTransformer($transformer);
        $builder->add('firstName', 'field');
        $builder->add('lastName', 'field');
        $builder->setData($originalAuthor);
        $form = $builder->getInstance();

        $form->bind(array(
            'firstName' => 'Foo',
            'lastName' => 'Bar',
        ));

        $this->assertEquals('Foo', $transformedAuthor->firstName);
        $this->assertEquals('Bar', $transformedAuthor->getLastName());
    }

    public function testGetDataReturnsObject()
    {
        $form = $this->factory->create('form', 'author');
        $object = new \stdClass();
        $form->setData($object);
        $this->assertEquals($object, $form->getData());
    }

    public function testSubmitWithoutPriorSetData()
    {
        $this->markTestSkipped('Currently does not work');

        $field = $this->createMockField('firstName');
        $field->expects($this->any())
        ->method('getData')
        ->will($this->returnValue('Bernhard'));

        $form = $this->factory->create('form', 'author');
        $form->add($field);

        $form->bind(array('firstName' => 'Bernhard'));

        $this->assertEquals(array('firstName' => 'Bernhard'), $form->getData());
    }

    public function testValidateData()
    {
        $graphWalker = $this->createMockGraphWalker();
        $metadataFactory = $this->createMockMetadataFactory();
        $context = new ExecutionContext('Root', $graphWalker, $metadataFactory);
        $object = $this->getMock('\stdClass');
        $form = $this->factory->create('form', 'author', array('validation_groups' => array(
            'group1',
            'group2',
        )));

        $graphWalker->expects($this->exactly(2))
            ->method('walkReference')
            ->with($object,
                // should test for groups - PHPUnit limitation
                $this->anything(),
                'data',
                true);

        $form->setData($object);
        $form->validateData($context);
    }

    public function testValidateDataAppendsPropertyPath()
    {
        $graphWalker = $this->createMockGraphWalker();
        $metadataFactory = $this->createMockMetadataFactory();
        $context = new ExecutionContext('Root', $graphWalker, $metadataFactory);
        $context->setPropertyPath('path');
        $object = $this->getMock('\stdClass');
        $form = $this->factory->create('form', 'author');

        $graphWalker->expects($this->once())
            ->method('walkReference')
            ->with($object, null, 'path.data', true);

        $form->setData($object);
        $form->validateData($context);
    }

    public function testValidateDataSetsCurrentPropertyToData()
    {
        $graphWalker = $this->createMockGraphWalker();
        $metadataFactory = $this->createMockMetadataFactory();
        $context = new ExecutionContext('Root', $graphWalker, $metadataFactory);
        $object = $this->getMock('\stdClass');
        $form = $this->factory->create('form', 'author');
        $test = $this;

        $graphWalker->expects($this->once())
            ->method('walkReference')
            ->will($this->returnCallback(function () use ($context, $test) {
                $test->assertEquals('data', $context->getCurrentProperty());
            }));

        $form->setData($object);
        $form->validateData($context);
    }

    public function testValidateDataDoesNotWalkScalars()
    {
        $graphWalker = $this->createMockGraphWalker();
        $metadataFactory = $this->createMockMetadataFactory();
        $context = new ExecutionContext('Root', $graphWalker, $metadataFactory);
        $clientTransformer = $this->createMockTransformer();

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->setClientTransformer($clientTransformer);
        $form = $builder->getInstance();

        $graphWalker->expects($this->never())
            ->method('walkReference');

        $clientTransformer->expects($this->atLeastOnce())
            ->method('reverseTransform')
            ->will($this->returnValue('foobar'));

        $form->bind(array('foo' => 'bar')); // reverse transformed to "foobar"
        $form->validateData($context);
    }

    public function testSubformDoesntCallSetters()
    {
        $author = new FormTest_AuthorWithoutRefSetter(new Author());

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('reference', 'form');
        $builder->get('reference')->add('firstName', 'field');
        $builder->setData($author);
        $form = $builder->getInstance();

        $form->bind(array(
            // reference has a getter, but not setter
            'reference' => array(
                'firstName' => 'Foo',
            )
        ));

        $this->assertEquals('Foo', $author->getReference()->firstName);
    }

    public function testSubformCallsSettersIfTheObjectChanged()
    {
        // no reference
        $author = new FormTest_AuthorWithoutRefSetter(null);
        $newReference = new Author();

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('referenceCopy', 'form');
        $builder->get('referenceCopy')->add('firstName', 'field');
        $builder->setData($author);
        $form = $builder->getInstance();

        $form['referenceCopy']->setData($newReference); // new author object

        $form->bind(array(
            // referenceCopy has a getter that returns a copy
            'referenceCopy' => array(
                'firstName' => 'Foo',
            )
        ));

        $this->assertEquals('Foo', $author->getReferenceCopy()->firstName);
    }

    public function testSubformCallsSettersIfByReferenceIsFalse()
    {
        $author = new FormTest_AuthorWithoutRefSetter(new Author());

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('referenceCopy', 'form', array('by_reference' => false));
        $builder->get('referenceCopy')->add('firstName', 'field');
        $builder->setData($author);
        $form = $builder->getInstance();

        $form->bind(array(
            // referenceCopy has a getter that returns a copy
            'referenceCopy' => array(
                'firstName' => 'Foo',
            )
        ));

        // firstName can only be updated if setReferenceCopy() was called
        $this->assertEquals('Foo', $author->getReferenceCopy()->firstName);
    }

    public function testSubformCallsSettersIfReferenceIsScalar()
    {
        $author = new FormTest_AuthorWithoutRefSetter('scalar');

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->add('referenceCopy', 'form');
        $builder->get('referenceCopy')->setClientTransformer(new CallbackTransformer(
            function () {},
            function ($value) { // reverseTransform
                return 'foobar';
            }
        ));
        $builder->setData($author);
        $form = $builder->getInstance();

        $form->bind(array(
            'referenceCopy' => array(), // doesn't matter actually
        ));

        // firstName can only be updated if setReferenceCopy() was called
        $this->assertEquals('foobar', $author->getReferenceCopy());
    }

    public function testSubformAlwaysInsertsIntoArrays()
    {
        $ref1 = new Author();
        $ref2 = new Author();
        $author = array('referenceCopy' => $ref1);

        $builder = $this->factory->createBuilder('form', 'author');
        $builder->setData($author);
        $builder->add('referenceCopy', 'form');
        $builder->get('referenceCopy')->setClientTransformer(new CallbackTransformer(
            function () {},
            function ($value) use ($ref2) { // reverseTransform
                return $ref2;
            }
        ));
        $form = $builder->getInstance();

        $form->bind(array(
            'referenceCopy' => array('a' => 'b'), // doesn't matter actually
        ));

        // the new reference was inserted into the array
        $author = $form->getData();
        $this->assertSame($ref2, $author['referenceCopy']);
    }

    public function testIsEmptyReturnsTrueIfAllFieldsAreEmpty()
    {
        $builder = $this->factory->createBuilder('form', 'name');
        $builder->add('foo', 'field', array('data' => ''));
        $builder->add('bar', 'field', array('data' => null));
        $form = $builder->getInstance();

        $this->assertTrue($form->isEmpty());
    }

    public function testIsEmptyReturnsFalseIfAnyFieldIsFilled()
    {
        $builder = $this->factory->createBuilder('form', 'name');
        $builder->add('foo', 'field', array('data' => 'baz'));
        $builder->add('bar', 'field', array('data' => null));
        $form = $builder->getInstance();

        $this->assertFalse($form->isEmpty());
    }

    /**
     * Create a group containing two fields, "visibleField" and "hiddenField"
     *
     * @return Form
     */
    protected function getGroupWithBothVisibleAndHiddenField()
    {
        $form = $this->factory->create('form', 'testGroup');

        // add a visible field
        $visibleField = $this->createMockField('visibleField');
        $visibleField->expects($this->once())
        ->method('isHidden')
        ->will($this->returnValue(false));
        $form->add($visibleField);

        // add a hidden field
        $hiddenField = $this->createMockField('hiddenField');
        $hiddenField->expects($this->once())
        ->method('isHidden')
        ->will($this->returnValue(true));
        $form->add($hiddenField);

        return $form;
    }

    protected function createMockField($key)
    {
        $field = $this->getMock(
            'Symfony\Component\Form\FieldInterface',
        array(),
        array(),
            '',
        false, // don't use constructor
        false  // don't call parent::__clone
        );

        $field->expects($this->any())
        ->method('getName')
        ->will($this->returnValue($key));

        return $field;
    }

    protected function createMockForm()
    {
        $form = $this->getMock(
            'Symfony\Component\Form\Form',
        array(),
        array(),
            '',
        false, // don't use constructor
        false  // don't call parent::__clone)
        );

        $form->expects($this->any())
        ->method('getRoot')
        ->will($this->returnValue($form));

        return $form;
    }

    protected function createInvalidMockField($key)
    {
        $field = $this->createMockField($key);
        $field->expects($this->any())
        ->method('isValid')
        ->will($this->returnValue(false));

        return $field;
    }

    protected function createValidMockField($key)
    {
        $field = $this->createMockField($key);
        $field->expects($this->any())
        ->method('isValid')
        ->will($this->returnValue(true));

        return $field;
    }

    protected function createNonMultipartMockField($key)
    {
        $field = $this->createMockField($key);
        $field->expects($this->any())
        ->method('isMultipart')
        ->will($this->returnValue(false));

        return $field;
    }

    protected function createMultipartMockField($key)
    {
        $field = $this->createMockField($key);
        $field->expects($this->any())
        ->method('isMultipart')
        ->will($this->returnValue(true));

        return $field;
    }

    protected function createMockTransformer()
    {
        return $this->getMock('Symfony\Component\Form\DataTransformer\DataTransformerInterface', array(), array(), '', false, false);
    }

    protected function createMockValidator()
    {
        return $this->getMock('Symfony\Component\Validator\ValidatorInterface');
    }

    protected function createMockCsrfProvider()
    {
        return $this->getMock('Symfony\Component\Form\CsrfProvider\CsrfProviderInterface');
    }

    protected function createMockGraphWalker()
    {
        return $this->getMockBuilder('Symfony\Component\Validator\GraphWalker')
        ->disableOriginalConstructor()
        ->getMock();
    }

    protected function createMockMetadataFactory()
    {
        return $this->getMock('Symfony\Component\Validator\Mapping\ClassMetadataFactoryInterface');
    }

    protected function createPostRequest(array $values = array(), array $files = array())
    {
        $server = array('REQUEST_METHOD' => 'POST');

        return new Request(array(), $values, array(), array(), $files, $server);
    }
}