How to create cgi.FieldStorage for testing purposes?

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I am creating a utility to handle file uploads in webob-based applications. I want to write some unit tests for it.

My question is - as webob uses cgi.FieldStorage for uploaded files I would like to create a FieldStorage instance in a simple way (without emulating a whole request). What it the minimum code I need to do it (nothing fancy, emulating upload of a text file with "Lorem ipsum" content would be fine). Or is it a better idea to mock it?

webob cgi file-upload unit-testing python
3 Answers

I was doing something like this, since in my script i'm using

import cgi

form = cgi.FieldStorage()

>>> # which result:
>>> FieldStorage(None, None, [])

When your URL contains query string it will look like this:

# URL: https://..../index.cgi?test=only
FieldStorage(None, None, [MiniFieldStorage('test', 'only')])

So i was just pushing manually MiniFieldStorage into the form variable

import cgi

fs = cgi.MiniFieldStorage('test', 'only')
>>> fs
MiniFieldStorage('test', 'only')

form = cgi.FieldStorage()
form.list.append(fs)

>>> form
>>> FieldStorage(None, None, [MiniFieldStorage('test', 'only')])

# Now you can call it with same functions
>>> form.getfirst('test')
'only'
user_2819650
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