[Django] #29420: Single quote in json bytes from RequestFactory

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May 20, 2018, 1:10:48 AM5/20/18

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If we use RequestFactory to build a JSON request, the body of the request
is built with single quotes instead of double-quotes. However, According
to [http://www.ecma-international.org/publications/files/ECMA-
ST/ECMA-404.pdf ECMA-404], chapter 9-String:
A string is a sequence of Unicode code points wrapped with quotation
marks (U+0022).

Using the standard `json` library to load this payload raises an
Exception.

Here is a MVP to run in a Django console:

{{{
>>> import json
>>> from django.test import RequestFactory
>>>
>>> data = {'key': 'value'}
>>> request = RequestFactory().post('/', data,
content_type='application/json')
>>> request.body # Here, we see the JSON has been encoded with single
quotes.
b"{'key': 'value'}"
>>> json.loads(request.body) # And json.loads refuses the single quote
Traceback (most recent call last):
[...]
json.decoder.JSONDecoder: Expecting property name enclosed in double
quotes: line 1 column 2 (char 1)
}}}

If this is an expected behavior, it should probably be documented
somewhere in
[https://docs.djangoproject.com/en/2.0/topics/testing/advanced/#the-
request-factory this page], as well as how to POST a JSON request. Except
if I miss something, of course.

--
Ticket URL: <https://code.djangoproject.com/ticket/29420>
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Django

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May 20, 2018, 9:47:53 AM5/20/18

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#29420: Single quote in json bytes from RequestFactory
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Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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