[TIP] Mock and csv reader
sean at seanfisk.com
Tue Jul 9 16:05:17 PDT 2013
Exactly what function are you trying to test? I assume it is the with
open(...) block, but that's not currently in a different function. I think
I could better understand your problem if you posted your test code and
your function under test.
On Mon, Jul 8, 2013 at 3:36 AM, Flavio Oliveira <flavyobr at gmail.com> wrote:
> The only way to print the rows in the code below is if I use f.read() as
> input to csv.reader().
> I really don't know how to test my function as I just pass the file handle
> to the csv.reader().
> Do you know the reason? How can I sort it out?
> def test_parse_csv(self):
> my_mock = mock.MagicMock(spec=file)
> with mock.patch('__builtin__.open', my_mock):
> manager = my_mock.return_value.__enter__.return_value
> manager.read.return_value = StringIO("my,example,input")
> with open('x') as f:
> reader = csv.reader(f)
> for row in reader:
> print row
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