Merge branch '3.4' into 4.1

* 3.4:
  [appveyor] fix
  Revert "minor #28321 [Routing] Fixed the interface description of the url generator interface (Toflar)"
  Fixed caching of templates in default path on cache warmup
  remove cache warmers when Twig cache is disabled
  [HttpKernel][FrameworkBundle] Fix escaping of serialized payloads passed to test clients
  chore: rename Appveyor filename
  Fixed the interface description of the url generator interface
  Format file size in validation message according to binaryFormat option

Author: nicolas-grekas

Constraints/FileValidator.php

@@ -57,7 +57,7 @@ public function validate($value, Constraint $constraint)
                         $binaryFormat = $constraint->binaryFormat;
                     } else {
                         $limitInBytes = $iniLimitSize;
-                        $binaryFormat = true;
+                        $binaryFormat = null === $constraint->binaryFormat ? true : $constraint->binaryFormat;
                     }
 
                     list($sizeAsString, $limitAsString, $suffix) = $this->factorizeSizes(0, $limitInBytes, $binaryFormat);

Tests/Constraints/FileValidatorTest.php

@@ -451,11 +451,17 @@ public function uploadedFileErrorProvider()
                 '{{ suffix }}' => 'bytes',
             ), '1');
 
+            // access FileValidator::factorizeSizes() private method to format max file size
+            $reflection = new \ReflectionClass(\get_class(new FileValidator()));
+            $method = $reflection->getMethod('factorizeSizes');
+            $method->setAccessible(true);
+            list($sizeAsString, $limit, $suffix) = $method->invokeArgs(new FileValidator(), array(0, UploadedFile::getMaxFilesize(), false));
+
             // it correctly parses the maxSize option and not only uses simple string comparison
             // 1000M should be bigger than the ini value
             $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
-                '{{ limit }}' => UploadedFile::getMaxFilesize() / 1048576,
-                '{{ suffix }}' => 'MiB',
+                '{{ limit }}' => $limit,
+                '{{ suffix }}' => $suffix,
             ), '1000M');
 
             // it correctly parses the maxSize option and not only uses simple string comparison