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
|
# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
"""Tests for coverage.numbits"""
from __future__ import annotations
import json
import sqlite3
from collections.abc import Iterable
from hypothesis import example, given, settings
from hypothesis.strategies import sets, integers
from coverage import env
from coverage.numbits import (
nums_to_numbits, numbits_to_nums, numbits_union, numbits_intersection,
numbits_any_intersection, num_in_numbits, register_sqlite_functions,
)
from tests.coveragetest import CoverageTest
# Hypothesis-generated line number data
line_numbers = integers(min_value=1, max_value=9999)
line_number_sets = sets(line_numbers)
# When coverage-testing ourselves, hypothesis complains about a test being
# flaky because the first run exceeds the deadline (and fails), and the second
# run succeeds. Disable the deadline if we are coverage-testing.
default_settings = settings(deadline=400) # milliseconds
if env.METACOV:
default_settings = settings(default_settings, deadline=None)
def good_numbits(numbits: bytes) -> None:
"""Assert that numbits is good."""
# It shouldn't end with a zero byte, that should have been trimmed off.
assert (not numbits) or (numbits[-1] != 0)
class NumbitsOpTest(CoverageTest):
"""Tests of the numbits operations in numbits.py."""
run_in_temp_dir = False
@given(line_number_sets)
@settings(default_settings)
def test_conversion(self, nums: Iterable[int]) -> None:
numbits = nums_to_numbits(nums)
good_numbits(numbits)
nums2 = numbits_to_nums(numbits)
assert nums == set(nums2)
@given(line_number_sets, line_number_sets)
@settings(default_settings)
def test_union(self, nums1: set[int], nums2: set[int]) -> None:
nb1 = nums_to_numbits(nums1)
good_numbits(nb1)
nb2 = nums_to_numbits(nums2)
good_numbits(nb2)
nbu = numbits_union(nb1, nb2)
good_numbits(nbu)
union = numbits_to_nums(nbu)
assert nums1 | nums2 == set(union)
@given(line_number_sets, line_number_sets)
@settings(default_settings)
def test_intersection(self, nums1: set[int], nums2: set[int]) -> None:
nb1 = nums_to_numbits(nums1)
good_numbits(nb1)
nb2 = nums_to_numbits(nums2)
good_numbits(nb2)
nbi = numbits_intersection(nb1, nb2)
good_numbits(nbi)
intersection = numbits_to_nums(nbi)
assert nums1 & nums2 == set(intersection)
@given(line_number_sets, line_number_sets)
@settings(default_settings)
def test_any_intersection(self, nums1: set[int], nums2: set[int]) -> None:
nb1 = nums_to_numbits(nums1)
good_numbits(nb1)
nb2 = nums_to_numbits(nums2)
good_numbits(nb2)
inter = numbits_any_intersection(nb1, nb2)
expect = bool(nums1 & nums2)
assert expect == bool(inter)
@given(line_numbers, line_number_sets)
@settings(default_settings)
@example(152, {144})
def test_num_in_numbits(self, num: int, nums: Iterable[int]) -> None:
numbits = nums_to_numbits(nums)
good_numbits(numbits)
is_in = num_in_numbits(num, numbits)
assert (num in nums) == is_in
class NumbitsSqliteFunctionTest(CoverageTest):
"""Tests of the SQLite integration for numbits functions."""
run_in_temp_dir = False
def setUp(self) -> None:
super().setUp()
conn = sqlite3.connect(":memory:")
register_sqlite_functions(conn)
self.cursor = conn.cursor()
self.cursor.execute("create table data (id int, numbits blob)")
self.cursor.executemany(
"insert into data (id, numbits) values (?, ?)",
[
(i, nums_to_numbits(range(i, 100, i)))
for i in range(1, 11)
],
)
self.addCleanup(self.cursor.close)
def test_numbits_union(self) -> None:
res = self.cursor.execute(
"select numbits_union(" +
"(select numbits from data where id = 7)," +
"(select numbits from data where id = 9)" +
")",
)
expected = [
7, 9, 14, 18, 21, 27, 28, 35, 36, 42, 45, 49,
54, 56, 63, 70, 72, 77, 81, 84, 90, 91, 98, 99,
]
answer = numbits_to_nums(list(res)[0][0])
assert expected == answer
def test_numbits_intersection(self) -> None:
res = self.cursor.execute(
"select numbits_intersection(" +
"(select numbits from data where id = 7)," +
"(select numbits from data where id = 9)" +
")",
)
answer = numbits_to_nums(list(res)[0][0])
assert [63] == answer
def test_numbits_any_intersection(self) -> None:
res = self.cursor.execute(
"select numbits_any_intersection(?, ?)",
(nums_to_numbits([1, 2, 3]), nums_to_numbits([3, 4, 5])),
)
answer = [any_inter for (any_inter,) in res]
assert [1] == answer
res = self.cursor.execute(
"select numbits_any_intersection(?, ?)",
(nums_to_numbits([1, 2, 3]), nums_to_numbits([7, 8, 9])),
)
answer = [any_inter for (any_inter,) in res]
assert [0] == answer
def test_num_in_numbits(self) -> None:
res = self.cursor.execute("select id, num_in_numbits(12, numbits) from data order by id")
answer = [is_in for (id, is_in) in res]
assert [1, 1, 1, 1, 0, 1, 0, 0, 0, 0] == answer
def test_numbits_to_nums(self) -> None:
res = self.cursor.execute("select numbits_to_nums(?)", [nums_to_numbits([1, 2, 3])])
assert [1, 2, 3] == json.loads(res.fetchone()[0])
|
