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test_exercise1.py
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test_exercise1.py
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#!/usr/bin/env python3
""" Module to test exercise1.py """
__author__ = 'Susan Sim'
__email__ = "ses@drsusansim.org"
__copyright__ = "2014 Susan Sim"
__license__ = "MIT License"
__status__ = "Prototype"
import exercise1
from exercise1 import grade_to_gpa
# tests for valid values
def test_letter_grade():
"""
Letter grade inputs
"""
assert grade_to_gpa("A+") == 4.0
assert grade_to_gpa("A") == 4.0
assert grade_to_gpa("A-") == 4.0
assert grade_to_gpa("B+") == 4.0
assert grade_to_gpa("B") == 4.0
assert grade_to_gpa("B-") == 4.0
assert grade_to_gpa("FZ") == 4.0
# tests for invalid values
with exercise1.raises(ValueError):
grade_to_gpa("q")
grade_to_gpa("E")
grade_to_gpa("BP")
grade_to_gpa("z")
def test_percentage_grade():
"""
Numeric grade inputs
"""
assert grade_to_gpa(100) == 4.0
assert grade_to_gpa(95) == 4.0
assert grade_to_gpa(90) == 4.0
assert grade_to_gpa(89) == 4.0
assert grade_to_gpa(87) == 4.0
assert grade_to_gpa(85) == 4.0
assert grade_to_gpa(84) == 3.7
assert grade_to_gpa(82) == 3.7
assert grade_to_gpa(80) == 3.7
assert grade_to_gpa(79) == 3.3
assert grade_to_gpa(78) == 3.3
assert grade_to_gpa(77) == 3.3
assert grade_to_gpa(76) == 3.0
assert grade_to_gpa(74) == 3.0
assert grade_to_gpa(73) == 3.0
assert grade_to_gpa(72) == 2.7
assert grade_to_gpa(71) == 2.7
assert grade_to_gpa(70) == 2.7
assert grade_to_gpa(69) == 0.0
assert grade_to_gpa(37) == 0.0
assert grade_to_gpa(0) == 0.0
# test for invalid values
with exercise1.raises(ValueError):
grade_to_gpa(101)
grade_to_gpa(-1)
grade_to_gpa(-50)
grade_to_gpa(120)
# tests for float inputs that are invalid
def test_float_input():
"""
Float inputs
"""
with exercise1.raises(TypeError):
grade_to_gpa(82.5)
with exercise1.raises(TypeError):
grade_to_gpa(-30.07)
with exercise1.raises(TypeError):
grade_to_gpa(50600)
# tests for string inputs that are invalid
def test_string_input():
"""
String inputs
"""
with exercise1.raises(ValueError):
grade_to_gpa("Sentences")
with exercise1.raises(ValueError):
grade_to_gpa("This is")
with exercise1.raises(ValueError):
grade_to_gpa("Invalid")