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Unit testing in Python

Find luck

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There is a function called find_luck(). We do not know its code, but we know exactly how it works — given a string, it returns an object if 'luck' is contained in the string, and None otherwise. Write tests for this function (use assertIsNotNone and assertIsNone).

In this Code Challenge, you do not need to import the module with the function at the beginning of the code. To call the function, just type its name, find_luck().

Write a program in Python 3

# tests for the function

import unittest

class TestFindLuck(unittest.TestCase):

def test_strings_with_luck(self):

# checks that find_luck finds 'luck' in all of the strings with 'luck'

strings_with_luck = [

'luck',

'hereluckthere',

'hereluck',

'luckhere',

'luck is great but most of life is hard work'

]

# write your test here

for s in strings_with_luck:

def test_strings_without_luck(self):

# checks that find_luck returns None when there is no 'luck' in the string

strings_without_luck = ['here', 'duck', 'four', 'uckl']

# write your test here

for s in strings_without_luck:

if __name__ == '__main__':

unittest.main()

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