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thepabloaguilar/article-monkey_patching_is_not_too_bad-has_trace_example.py

Last active August 12, 2020 19:51
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[Article] Monkey Patching is not too bad - pytest plugin example
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article-monkey_patching_is_not_too_bad-has_trace_example.py
from returns.result import Result, Success, Failure
def example_function(arg: str) -> Result[int, str]:
if arg.isnumeric():
return Success(int(arg))
return Failure('"{0}" is not a number'.format(arg))
def test_if_failure_is_created_at_example_function(returns):
with returns.has_trace(Failure, example_function):
Success('not a number').bind(example_function)
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