def test_calculation_choice_P():
# the user will pick parallel and this test will confirm that parallel calculations will be used
C_parallel = "parallel"
calculation = Mainmenu()
choice = calculation.Calculation_type("parallel")
assert choice == C_parallel, "This will be true if the user chooses parallel circuit calculations"
def test_calculation_choice_S():
# the user will pick series and this test will confirm that series calculations will be used
C_series = "series"
calculation = Mainmenu()
choice = calculation.Calculation_type("series")
assert choice == C_series, "This will be True if the user chooses series circuit calculations"