'''
    DS2000
    Spring 2020
    Sample code from class -- testing the ACT function in a better way

    Instead of manually running a driver over and over, we
    use this test suite to call our function over and over and
    compare the output to what we expected it to be.
'''

# structure is: FROM module IMPORT funcname
# the module act would be a file named act.py
# Python looks in the current directory, or in the Python library
from act import update_act

def test_update_act(curr_act, num_students, new_score, expected):
    ''' Function test_update_act
        Input: values to pass to update_act function for ONE test --
               curr_act (float), num_students (int), new_score (int).
               Also a float for the expected output
        Returns: nothing
        Does: Calls update_act with the given input, prints the actual result
              so it can be compared to the expected.
    '''
    print('Testing inputs:', curr_act, ', ', num_students, ', ',
          new_score, '. Expecting new ACT: ', expected, sep = '')
    actual = update_act(curr_act, num_students, new_score)
    print('...actual result:', actual, '\n')

def main():
    
    # Test One: 0.0 avg, 0 students, get a 36. New ACT average -- 36
    test_update_act(0.0, 0, 36, 36)

    # Test Two: 25 avg, 1 student, get a 15. New ACT average -- 20.0
    test_update_act(25, 1, 15, 20.0)

    # Test Three: 25 avg, 20 students, get a 30. New ACT average -- 25.23.
    test_update_act(25, 20, 30, 25.23)

    # Test Four: 34 avg, 100 students, get a 34. New ACT average -- 34
    test_update_act(34, 100, 34, 34)

main()