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diff --git a/vendor/symfony/validator/Tests/Constraints/ExpressionValidatorTest.php b/vendor/symfony/validator/Tests/Constraints/ExpressionValidatorTest.php
new file mode 100644
index 000000000..420fb7057
--- /dev/null
+++ b/vendor/symfony/validator/Tests/Constraints/ExpressionValidatorTest.php
@@ -0,0 +1,244 @@
+<?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\PropertyAccess\PropertyAccess;
+use Symfony\Component\Validator\Constraints\Expression;
+use Symfony\Component\Validator\Constraints\ExpressionValidator;
+use Symfony\Component\Validator\Tests\Fixtures\Entity;
+use Symfony\Component\Validator\Validation;
+
+class ExpressionValidatorTest extends AbstractConstraintValidatorTest
+{
+    protected function getApiVersion()
+    {
+        return Validation::API_VERSION_2_5;
+    }
+
+    protected function createValidator()
+    {
+        return new ExpressionValidator(PropertyAccess::createPropertyAccessor());
+    }
+
+    public function testExpressionIsEvaluatedWithNullValue()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'false',
+            'message' => 'myMessage',
+        ));
+
+        $this->validator->validate(null, $constraint);
+
+        $this->buildViolation('myMessage')
+            ->setParameter('{{ value }}', 'null')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    public function testExpressionIsEvaluatedWithEmptyStringValue()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'false',
+            'message' => 'myMessage',
+        ));
+
+        $this->validator->validate('', $constraint);
+
+        $this->buildViolation('myMessage')
+            ->setParameter('{{ value }}', '""')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    public function testSucceedingExpressionAtObjectLevel()
+    {
+        $constraint = new Expression('this.data == 1');
+
+        $object = new Entity();
+        $object->data = '1';
+
+        $this->setObject($object);
+
+        $this->validator->validate($object, $constraint);
+
+        $this->assertNoViolation();
+    }
+
+    public function testFailingExpressionAtObjectLevel()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'this.data == 1',
+            'message' => 'myMessage',
+        ));
+
+        $object = new Entity();
+        $object->data = '2';
+
+        $this->setObject($object);
+
+        $this->validator->validate($object, $constraint);
+
+        $this->buildViolation('myMessage')
+            ->setParameter('{{ value }}', 'object')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    public function testSucceedingExpressionAtPropertyLevel()
+    {
+        $constraint = new Expression('value == this.data');
+
+        $object = new Entity();
+        $object->data = '1';
+
+        $this->setRoot($object);
+        $this->setPropertyPath('data');
+        $this->setProperty($object, 'data');
+
+        $this->validator->validate('1', $constraint);
+
+        $this->assertNoViolation();
+    }
+
+    public function testFailingExpressionAtPropertyLevel()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'value == this.data',
+            'message' => 'myMessage',
+        ));
+
+        $object = new Entity();
+        $object->data = '1';
+
+        $this->setRoot($object);
+        $this->setPropertyPath('data');
+        $this->setProperty($object, 'data');
+
+        $this->validator->validate('2', $constraint);
+
+        $this->buildViolation('myMessage')
+            ->atPath('data')
+            ->setParameter('{{ value }}', '"2"')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    public function testSucceedingExpressionAtNestedPropertyLevel()
+    {
+        $constraint = new Expression('value == this.data');
+
+        $object = new Entity();
+        $object->data = '1';
+
+        $root = new Entity();
+        $root->reference = $object;
+
+        $this->setRoot($root);
+        $this->setPropertyPath('reference.data');
+        $this->setProperty($object, 'data');
+
+        $this->validator->validate('1', $constraint);
+
+        $this->assertNoViolation();
+    }
+
+    public function testFailingExpressionAtNestedPropertyLevel()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'value == this.data',
+            'message' => 'myMessage',
+        ));
+
+        $object = new Entity();
+        $object->data = '1';
+
+        $root = new Entity();
+        $root->reference = $object;
+
+        $this->setRoot($root);
+        $this->setPropertyPath('reference.data');
+        $this->setProperty($object, 'data');
+
+        $this->validator->validate('2', $constraint);
+
+        $this->buildViolation('myMessage')
+            ->atPath('reference.data')
+            ->setParameter('{{ value }}', '"2"')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    /**
+     * When validatePropertyValue() is called with a class name
+     * https://github.com/symfony/symfony/pull/11498.
+     */
+    public function testSucceedingExpressionAtPropertyLevelWithoutRoot()
+    {
+        $constraint = new Expression('value == "1"');
+
+        $this->setRoot('1');
+        $this->setPropertyPath('');
+        $this->setProperty(null, 'property');
+
+        $this->validator->validate('1', $constraint);
+
+        $this->assertNoViolation();
+    }
+
+    /**
+     * When validatePropertyValue() is called with a class name
+     * https://github.com/symfony/symfony/pull/11498.
+     */
+    public function testFailingExpressionAtPropertyLevelWithoutRoot()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'value == "1"',
+            'message' => 'myMessage',
+        ));
+
+        $this->setRoot('2');
+        $this->setPropertyPath('');
+        $this->setProperty(null, 'property');
+
+        $this->validator->validate('2', $constraint);
+
+        $this->buildViolation('myMessage')
+            ->atPath('')
+            ->setParameter('{{ value }}', '"2"')
+            ->setCode(Expression::EXPRESSION_FAILED_ERROR)
+            ->assertRaised();
+    }
+
+    public function testExpressionLanguageUsage()
+    {
+        $constraint = new Expression(array(
+            'expression' => 'false',
+        ));
+
+        $expressionLanguage = $this->getMockBuilder('Symfony\Component\ExpressionLanguage\ExpressionLanguage')->getMock();
+
+        $used = false;
+
+        $expressionLanguage->method('evaluate')
+            ->will($this->returnCallback(function () use (&$used) {
+                $used = true;
+
+                return true;
+            }));
+
+        $validator = new ExpressionValidator(null, $expressionLanguage);
+        $validator->initialize($this->createContext());
+        $validator->validate(null, $constraint);
+
+        $this->assertTrue($used, 'Failed asserting that custom ExpressionLanguage instance is used.');
+    }
+}