--- /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 PHPUnit\Framework\TestCase;
+use Symfony\Component\Validator\Constraints\Collection;
+use Symfony\Component\Validator\Constraints\Email;
+use Symfony\Component\Validator\Constraints\Optional;
+use Symfony\Component\Validator\Constraints\Required;
+use Symfony\Component\Validator\Constraints\Valid;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class CollectionTest extends TestCase
+{
+ /**
+ * @expectedException \Symfony\Component\Validator\Exception\ConstraintDefinitionException
+ */
+ public function testRejectInvalidFieldsOption()
+ {
+ new Collection(array(
+ 'fields' => 'foo',
+ ));
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Validator\Exception\ConstraintDefinitionException
+ */
+ public function testRejectNonConstraints()
+ {
+ new Collection(array(
+ 'foo' => 'bar',
+ ));
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Validator\Exception\ConstraintDefinitionException
+ */
+ public function testRejectValidConstraint()
+ {
+ new Collection(array(
+ 'foo' => new Valid(),
+ ));
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Validator\Exception\ConstraintDefinitionException
+ */
+ public function testRejectValidConstraintWithinOptional()
+ {
+ new Collection(array(
+ 'foo' => new Optional(new Valid()),
+ ));
+ }
+
+ /**
+ * @expectedException \Symfony\Component\Validator\Exception\ConstraintDefinitionException
+ */
+ public function testRejectValidConstraintWithinRequired()
+ {
+ new Collection(array(
+ 'foo' => new Required(new Valid()),
+ ));
+ }
+
+ public function testAcceptOptionalConstraintAsOneElementArray()
+ {
+ $collection1 = new Collection(array(
+ 'fields' => array(
+ 'alternate_email' => array(
+ new Optional(new Email()),
+ ),
+ ),
+ ));
+
+ $collection2 = new Collection(array(
+ 'fields' => array(
+ 'alternate_email' => new Optional(new Email()),
+ ),
+ ));
+
+ $this->assertEquals($collection1, $collection2);
+ }
+
+ public function testAcceptRequiredConstraintAsOneElementArray()
+ {
+ $collection1 = new Collection(array(
+ 'fields' => array(
+ 'alternate_email' => array(
+ new Required(new Email()),
+ ),
+ ),
+ ));
+
+ $collection2 = new Collection(array(
+ 'fields' => array(
+ 'alternate_email' => new Required(new Email()),
+ ),
+ ));
+
+ $this->assertEquals($collection1, $collection2);
+ }
+}