Merge pull request #47 from zopefoundation/fix-file-upload

Support FileUpload.seekable()

CHANGES.rst

@@ -7,6 +7,9 @@
 
 - Drop support for Python 3.4.
 
+- ``FileUpload`` objects now support the ``seekable()`` method on Python 3.
+  Fixes `issue 44 <https://github.com/zopefoundation/zope.publisher/issue/44>`_.
+
 
 5.0.1 (2018-10-19)
 ==================

src/zope/publisher/browser.py

@@ -641,7 +641,7 @@ def __init__(self, aFieldStorage):
             methods = ['close', 'fileno', 'flush', 'isatty',
                 'read', 'readline', 'readlines', 'seek',
                 'tell', 'truncate', 'write', 'writelines',
-                'name']
+                'name', 'seekable']
 
         d = self.__dict__
         for m in methods:

src/zope/publisher/tests/test_browserrequest.py

@@ -227,6 +227,10 @@ def testFileUploadPost(self):
         # Test that we can actually read the file data
         self.assertEqual(request.form['upload'].read(), b'Some data')
 
+        if not PYTHON2:
+            # File objects on Python 3 have a seekable() method
+            self.assertTrue(request.form['upload'].seekable())
+
     def testLargePostValue(self):
         extra = {'REQUEST_METHOD':'POST',
                  'PATH_INFO': u"/",