--- /dev/null
+<?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\Component\Validator\Tests\Constraints;
+
+use Symfony\Component\Validator\Constraints\IsNull;
+use Symfony\Component\Validator\Constraints\IsNullValidator;
+use Symfony\Component\Validator\Validation;
+
+class IsNullValidatorTest extends AbstractConstraintValidatorTest
+{
+ protected function getApiVersion()
+ {
+ return Validation::API_VERSION_2_5;
+ }
+
+ protected function createValidator()
+ {
+ return new IsNullValidator();
+ }
+
+ public function testNullIsValid()
+ {
+ $this->validator->validate(null, new IsNull());
+
+ $this->assertNoViolation();
+ }
+
+ /**
+ * @dataProvider getInvalidValues
+ */
+ public function testInvalidValues($value, $valueAsString)
+ {
+ $constraint = new IsNull(array(
+ 'message' => 'myMessage',
+ ));
+
+ $this->validator->validate($value, $constraint);
+
+ $this->buildViolation('myMessage')
+ ->setParameter('{{ value }}', $valueAsString)
+ ->setCode(IsNull::NOT_NULL_ERROR)
+ ->assertRaised();
+ }
+
+ public function getInvalidValues()
+ {
+ return array(
+ array(0, '0'),
+ array(false, 'false'),
+ array(true, 'true'),
+ array('', '""'),
+ array('foo bar', '"foo bar"'),
+ array(new \DateTime(), 'object'),
+ array(new \stdClass(), 'object'),
+ array(array(), 'array'),
+ );
+ }
+}