Testing my twttr
In a file called twttr.py
, reimplement Setting up my twttr from Problem Set 2, restructuring your code per the below, wherein shorten
expects a str
as input and returns that same str
but with all vowels (A, E, I, O, and U) omitted, whether inputted in uppercase or lowercase.
def main():
...
def shorten(word):
...
if __name__ == "__main__":
main()
Then, in a file called test_twttr.py
, implement one or more functions that collectively test your implementation of shorten
thoroughly, each of whose names should begin with test_
so that you can execute your tests with:
pytest test_twttr.py
Hints
- Be sure to include
import twttr
or
from twttr import shorten
atop
test_twttr.py
so that you can callshorten
in your tests. - Take care to
return
, notprint
, astr
inshorten
. Onlymain
should callprint
.
Before You Begin
Log into cs50.dev, click on your terminal window, and execute cd
by itself. You should find that your terminal window’s prompt resembles the below:
$
Next execute
mkdir test_twttr
to make a folder called test_twttr
in your codespace.
Then execute
cd test_twttr
to change directories into that folder. You should now see your terminal prompt as test_twttr/ $
. You can now execute
code test_twttr.py
to make a file called test_twttr.py
where you’ll write your tests.
How to Test
To test your tests, run pytest test_twttr.py
. Be sure you have a copy of a twttr.py
file in the same folder. Try to use correct and incorrect versions of twttr.py
to determine how well your tests spot errors:
- Ensure you have a correct version of
twttr.py
. Run your tests by executingpytest test_twttr.py
.pytest
should show that all of your tests have passed. - Modify the correct version of
twttr.py
in such a way as to create a bug. Your program might, for example, mistakenly only omit lowercase vowels! Run your tests by executingpytest test_twttr.py
.pytest
should show that at least one of your tests has failed.
You can execute the below to check your tests using check50
, a program CS50 will use to test your code when you submit. (Now there are tests to test your tests!). Be sure to test your tests yourself and determine which tests are needed to ensure twttr.py
is checked thoroughly.
check50 cs50/problems/2022/python/tests/twttr
Green smilies mean your program has passed a test! Red frownies will indicate your program output something unexpected. Visit the URL that check50
outputs to see the input check50
handed to your program, what output it expected, and what output your program actually gave.
How to Submit
In your terminal, execute the below to submit your work.
submit50 cs50/problems/2022/python/tests/twttr