fix test on Windows

Author: xabbuh

Tests/Field/FileFormFieldTest.php

@@ -71,9 +71,16 @@ public function testSetValue($method)
         $field->$method(__DIR__.'/../Fixtures/no-extension');
         $value = $field->getValue();
 
+        $tmpName = $value['tmp_name'];
+
+        // Windows creates temporary files with a .tmp extension
+        if ('\\' === \DIRECTORY_SEPARATOR && str_ends_with($tmpName, '.tmp')) {
+            $tmpName = substr($tmpName, 0, -4);
+        }
+
         $this->assertArrayNotHasKey(
             'extension',
-            pathinfo($value['tmp_name']),
+            pathinfo($tmpName),
             "->$method() does not add a file extension in the tmp_name copy"
         );
     }