forked from ace-jc/netflix-tests
/
cat3238-TestNetflix.py
222 lines (183 loc) · 5.77 KB
/
cat3238-TestNetflix.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
#!/usr/bin/env python3
"""Unit Tests for Netflix.py"""
# -------
# imports
# -------
import os
from io import StringIO
from unittest import main, TestCase
from contextlib import contextmanager
from pickle import dump
from Netflix import (netflix_read, netflix_eval, netflix_load,
netflix_print, netflix_rmse, netflix_solve, pickle_load)
@contextmanager
def temp_pickle(data, name, path=''):
"""
open/close temp filled pickle file
data a blob of python data
name a filename string
path a path/dir string
"""
filename = path + name
with open(filename, "wb") as pickle_file:
dump(data, pickle_file)
yield
os.remove(filename)
# -----------
# TestNetflix
# -----------
# pylint: disable=R0904
class TestNetflix(TestCase):
"""Unit Tests for Netflix.py"""
# ----
# read
# ----
def test_read_1(self):
"""Test netflix_read for a customer ID"""
string = '123\n'
data_id, data_type = netflix_read(string)
self.assertEqual(data_id, 123)
self.assertEqual(data_type, 'customer')
def test_read_2(self):
"""Test netflix_read for a movie ID"""
string = '123:\n'
data_id, data_type = netflix_read(string)
self.assertEqual(data_id, 123)
self.assertEqual(data_type, 'movie')
def test_read_3(self):
"""Test netflix_read for a string"""
string = 'abc\n'
error = False
try:
netflix_read(string)
except ValueError:
error = True
self.assertTrue(error)
# ------
# pickle
# ------
def test_pickle_1(self):
"""Test pickle_load with array"""
name = 'test_pickle_1.p'
data_in = ['a', 'b', 'c']
with temp_pickle(data_in, name):
data_out = pickle_load(name, *['']*3)
self.assertEqual(data_in, data_out)
def test_pickle_2(self):
"""Test pickle_load with dict"""
name = 'test_pickle_2.p'
data_in = {'a': 1, 'b': 2, 'c': 3}
with temp_pickle(data_in, name):
data_out = pickle_load(name, *['']*3)
self.assertEqual(data_in, data_out)
def test_pickle_3(self):
"""Test pickle_load with int"""
name = 'test_pickle_3.p'
data_in = 123
with temp_pickle(data_in, name):
data_out = pickle_load(name, *['']*3)
self.assertEqual(data_in, data_out)
# ----
# load
# ----
def test_load_1(self):
"""Test netflix_cache with pickle load"""
files = ['total']
data_in = [3.2281371945000967]
data_out = netflix_load(files, [])
self.assertEqual(data_in, data_out)
def test_load_2(self):
"""Test netflix_cache with no pickle load"""
data_in = [123]
data_out = netflix_load('', data_in)
self.assertEqual(data_in, data_out)
# ----
# rmse
# ----
def test_rmse_1(self):
"""Test netflix_rmse for correct prediction"""
rmse = netflix_rmse([(1, 1), (5, 5)])
self.assertEqual(rmse, 0.0)
def test_rmse_2(self):
"""Test netflix_rmse for avg rating"""
rmse = round(netflix_rmse([(3.2, 1), (3.2, 5)]), 2)
self.assertEqual(rmse, 2.01)
def test_rmse_3(self):
"""Test netflix_rmse for invalid input"""
error = False
try:
netflix_rmse([(1,)])
except ValueError:
error = True
self.assertTrue(error)
# ----
# eval
# ----
def test_eval_1(self):
"""Test netflix_eval"""
rating, actual = netflix_eval(30878, 1)
self.assertEqual(rating, 3.7255000228804325)
self.assertEqual(actual, 4)
def test_eval_2(self):
"""Test netflix_eval"""
rating, actual = netflix_eval(1952305, 10)
self.assertEqual(rating, 2.9539170532434964)
self.assertEqual(actual, 3)
def test_eval_3(self):
"""Test netflix_eval"""
rating, actual = netflix_eval(1485175, 10012)
self.assertEqual(rating, 3.782384142757868)
self.assertEqual(actual, 3)
def test_eval_4(self):
"""Test netflix_eval"""
rating, actual = netflix_eval(430376, 10014)
self.assertEqual(rating, 3.2289684823453744)
self.assertEqual(actual, 3)
# -----
# print
# -----
def test_print_1(self):
"""Test netflix_print for an int"""
writer = StringIO()
netflix_print(writer, 10)
self.assertEqual(writer.getvalue(), '10\n')
def test_print_2(self):
"""Test netflix_print for a string"""
writer = StringIO()
netflix_print(writer, 'abc')
self.assertEqual(writer.getvalue(), 'abc\n')
def test_print_3(self):
"""Test netflix_print for 2 lines"""
writer = StringIO()
netflix_print(writer, 'abc\n123')
self.assertEqual(writer.getvalue(), 'abc\n123\n')
# -----
# solve
# -----
def test_solve_1(self):
"""Test netflix_solve"""
reader = StringIO('1123:\n448549\n2444222\n1522889\n')
writer = StringIO()
netflix_solve(reader, writer)
self.assertEqual(writer.getvalue(), '1123:\n3.3\n2.9\n4.1\nRMSE: 0.4148335185443161\n')
def test_solve_2(self):
"""Test netflix_solve"""
reader = StringIO('1:\n1989766\n\n1989766\n')
writer = StringIO()
error = False
try:
netflix_solve(reader, writer)
except ValueError:
error = True
self.assertTrue(error)
def test_solve_3(self):
"""Test netflix_solve"""
reader = StringIO('1:\n1989766\n')
writer = StringIO()
netflix_solve(reader, writer)
self.assertEqual(writer.getvalue(), '1:\n4.0\nRMSE: 0.0\n')
# ----
# main
# ----
if __name__ == "__main__":
main()