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test_exercise3.py
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test_exercise3.py
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#!/usr/bin/env python
""" Assignment 2, Exercise 3, INF1340, Fall, 2015. DBMS
Test module for exercise3.py
"""
__author__ = 'Susan Sim'
__email__ = "ses@drsusansim.org"
__copyright__ = "2015 Susan Sim"
__license__ = "MIT License"
from exercise3 import union, intersection, difference, MismatchedAttributesException
###########
# TABLES ##
###########
GRADUATES = [["Number", "Surname", "Age"],
[7274, "Robinson", 37],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
MANAGERS = [["Number", "Surname", "Age"],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
WORKERS = [["Number", "Surname", "Age"],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
STUDENTS = [["Number", "Surname"],
[7274, "Robinson"],
[7432, "O'Malley"],
[9824, "Darkes"]]
TEACHERS = [["Number", "Surname", "Age"],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
PRINCIPLES = [["Number", "Surname", "Years"],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
ARTISTS = [["Number", "Surname", "Age"],
[2899, "Richards", 46],
[4566, "Jackson", 19],
[5461, "Marks", 32]]
#####################
# HELPER FUNCTIONS ##
#####################
def is_equal(t1, t2):
return t1.sort() == t2.sort()
###################
# TEST FUNCTIONS ##
###################
def test_union():
"""
Test union operation.
"""
result = [["Number", "Surname", "Age"],
[7274, "Robinson", 37],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
assert is_equal(result, union(GRADUATES, MANAGERS))
result = [["Number", "Surname", "Age"],
[9297, "O'Malley", 56],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
assert is_equal(result, union(MANAGERS, WORKERS))
def test_intersection():
"""
Test intersection operation.
"""
result = [["Number", "Surname", "Age"],
[7432, "O'Malley", 39],
[9824, "Darkes", 38]]
assert is_equal(result, intersection(GRADUATES, MANAGERS))
result = [["Number", "Surname", "Age"]]
assert is_equal(result, intersection(GRADUATES, ARTISTS))
def test_difference():
"""
Test difference operation.
"""
result = [["Number", "Surname", "Age"],
[7274, "Robinson", 37]]
assert is_equal(result, difference(GRADUATES, MANAGERS))
result = [['Number', 'Surname', 'Age'],
[2899, 'Richards', 46], [4566, 'Jackson', 19],
[5461, 'Marks', 32]]
assert is_equal(result, intersection(ARTISTS, GRADUATES))
def test_number_columns_not_equal():
"""
Test schema, if number of columns aren't the same.
"""
try:
union(STUDENTS, TEACHERS)
except MismatchedAttributesException:
assert True
else:
assert False
def test_column_names_not_equal():
"""
Test schema, if names in column aren't the same.
"""
try:
difference(PRINCIPLES, TEACHERS)
except MismatchedAttributesException:
assert True
else:
assert False