Ticket #422: empty_file_field_error.patch

tests/test_file_upload.py

@@ -136 +136 @@
 
 def test_no_uploads_error():
     app = webtest.TestApp(single_upload_file_app)
-    uploads = app.get('/').forms["file_upload_form"].upload_fields()
+    single_form = app.get('/').forms["file_upload_form"]
+    single_form.submit("button")
 
 
 def test_file_upload_with_filename_only():

webtest/__init__.py

@@ -252 +252 @@
             lines.append('')
             lines.append(value)
         for file_info in files:
-            key, filename, value = self._get_file_info(file_info)
-            lines.append('--'+boundary)
-            lines.append('Content-Disposition: form-data; name="%s"; filename="%s"'
-                         % (key, filename))
-            fcontent = mimetypes.guess_type(filename)[0]
-            lines.append('Content-Type: %s' %
-                         fcontent or 'application/octet-stream')
-            lines.append('')
-            lines.append(value)
+            if len(file_info) > 1:
+                key, filename, value = self._get_file_info(file_info)
+                lines.append('--'+boundary)
+                lines.append('Content-Disposition: form-data; name="%s"; filename="%s"'
+                             % (key, filename))
+                fcontent = mimetypes.guess_type(filename)[0]
+                lines.append('Content-Type: %s' %
+                             fcontent or 'application/octet-stream')
+                lines.append('')
+                lines.append(value)
         lines.append('--' + boundary + '--')
         lines.append('')
         body = '\r\n'.join(lines)