[Form] Test covered fix for invalid date (13 month/31.02.2011 etc.) send to transformer. Closes #1755

src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php

@@ -142,7 +142,7 @@ class DateTimeToArrayTransformer extends BaseDateTimeTransformer
             ));
         }
 
-        if (false === checkdate($value['month'], $value['day'], $value['year'])) {
+        if (!empty($value['month']) && !empty($value['day']) && !empty($value['year']) && false === checkdate($value['month'], $value['day'], $value['year'])) {
             throw new TransformationFailedException('This is an invalid date');
         }
 

tests/Symfony/Tests/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformerTest.php

@@ -286,7 +286,7 @@ class DateTimeToArrayTransformerTest extends DateTimeTestCase
     {
         $transformer = new DateTimeToArrayTransformer();
 
-        $this->assertSame(null, $transformer->reverseTransform(null, null));
+        $this->assertNull($transformer->reverseTransform(null, null));
     }
 
     public function testReverseTransform_differentTimezones()
@@ -431,4 +431,36 @@ class DateTimeToArrayTransformerTest extends DateTimeTestCase
             'second' => '-1',
         ));
     }
+
+    /**
+     * @expectedException Symfony\Component\Form\Exception\TransformationFailedException
+     */
+    public function testReverseTransformWithInvalidMonth()
+    {
+        $transformer = new DateTimeToArrayTransformer();
+        $transformer->reverseTransform(array(
+            'year' => '2010',
+            'month' => '13',
+            'day' => '3',
+            'hour' => '4',
+            'minute' => '5',
+            'second' => '6',
+        ));
+    }
+
+    /**
+     * @expectedException Symfony\Component\Form\Exception\TransformationFailedException
+     */
+    public function testReverseTransformWithInvalidDay()
+    {
+        $transformer = new DateTimeToArrayTransformer();
+        $transformer->reverseTransform(array(
+            'year' => '2010',
+            'month' => '2',
+            'day' => '31',
+            'hour' => '4',
+            'minute' => '5',
+            'second' => '6',
+        ));
+    }
 }