mutation test
Mutation testing algorithmically modifies source code and checks if any “mutants” survived each test
#angle.py
def hours_hand(hour, minutes):
base = (hour % 12 ) * (360 // 12)
correction = int((minutes / 60) * (360 // 12))
return base + correction
def minutes_hand(hour, minutes):
return minutes * (360 // 60)
def between(hour, minutes):
return abs(hours_hand(hour, minutes) - minutes_hand(hour, minutes))
#test_angle.py
import angle
def test_twelve():
assert angle.between(12, 00) == 0
# to run mutation test
mutmut run --paths-to-mutate angle.py
#check changes
mutmut results
#use mutmut apply to apply a failed test case
mutmut apply 4
# according the test done by mutation, you can modify your own test cases
