mock file objects passed within json in python

Question

how to mock the following using MagicMock in Python 2.6.6:

with open('filename.txt', 'rb') as f:
    json.dumps(json.load(f))

Create a StringIO in place of f. – PaulMcG Feb 18 '16 at 23:50 — PaulMcG, Feb 18 '16 at 23:50

score 1 · Accepted Answer · answered Feb 20 '16 at 23:41

1

Yay, I found the solution, this is my approach:

@patch("json.load", MagicMock('{cool}')
@patch("json.dumps", MagicMock(return_value='{cool}'))

answered Feb 20 '16 at 23:41

Santhosh Balasa

score 0 · Answer 2 · edited May 23 '17 at 12:07

0

You can use mock framework (install it by pip). Use patch and mock_open by following this answer.

edited May 23 '17 at 12:07

Community

answered Feb 19 '16 at 12:40

Michele d'Amico

2 Answers2