Please tell us the meaning of the sentence

[tkoyama010]

The with the input of both 0 and part is missing information and cannot be read. Please tell us what you are trying to convey.

python-package-guide/tests/write-tests.md

Line 84 in 53e10d6

- **Test special cases:** Sometimes there are special or outlier cases. For instance, if a function performs a specific calculation that may become problematic closer to the value = 0, test it with the input of both 0 and

[sneakers-the-rat]

I think it may have gotten blurred together with the example after it?

I think for the idea of testing special cases, one familiar example might be dividing by zero. Something like

Test special cases: Sometimes there are special or outlier cases. For instance, you may have some function that divides x / y: divide(x,y). Write a test for your function with y = 0 to ensure that it handles the special case correctly.

except i don't have my writing voice on right now and it could use a bit of @lwasser 's writing voice in it :)