Alex Kleider wrote:
> It'll take more studying on my part before I'll be able to implement
> Ben's suggestion.
I find Ben's example instructive, but when you're just starting you might
prefer a simpler approach:
import unittest
from unittest import mock
import collect
class TestCollectData(unittest.TestCase):
def test(self):
with mock.patch(
"builtins.input",
side_effect=["foo", "bar", "baz"]):
self.assertEqual(
collect.collect_data(),
dict(first="foo", last="bar", phone="baz"))
if __name__ == "__main__":
unittest.main()
with mock.patch("builtins.input, side_effect=[...]):
...
temporarily replaces the built-in input() with a function that returns the
first item in the side_effect list on the first call, then the second, and
so on, something you could do by hand, only less conveniently:
>>> def input_many(): # example function; accumulate strings until ""
... result = []
... while True:
... item = input()
... if item == "": break
... result.append(item)
... return result
...
>>> input_many()
foo
bar
['foo', 'bar']
Works ;) Now let's change input() to something that returns "one", then
"two", then "":
>>> import builtins
>>> _input = builtins.input
>>> try:
... builtins.input = lambda items=iter(["one", "two", ""]): next(items)
... input_many()
... finally:
... builtins.input = _input
...
['one', 'two']
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