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
|
# flake8: noqa
import pytest
import sys
from unittest.mock import MagicMock, call
from sqlite_utils.utils import sqlite3
def test_register_function(fresh_db):
@fresh_db.register_function
def reverse_string(s):
return "".join(reversed(list(s)))
result = fresh_db.execute('select reverse_string("hello")').fetchone()[0]
assert result == "olleh"
def test_register_function_custom_name(fresh_db):
@fresh_db.register_function(name="revstr")
def reverse_string(s):
return "".join(reversed(list(s)))
result = fresh_db.execute('select revstr("hello")').fetchone()[0]
assert result == "olleh"
def test_register_function_multiple_arguments(fresh_db):
@fresh_db.register_function
def a_times_b_plus_c(a, b, c):
return a * b + c
result = fresh_db.execute("select a_times_b_plus_c(2, 3, 4)").fetchone()[0]
assert result == 10
def test_register_function_deterministic(fresh_db):
@fresh_db.register_function(deterministic=True)
def to_lower(s):
return s.lower()
result = fresh_db.execute("select to_lower('BOB')").fetchone()[0]
assert result == "bob"
def test_register_function_deterministic_tries_again_if_exception_raised(fresh_db):
fresh_db.conn = MagicMock()
fresh_db.conn.create_function = MagicMock()
@fresh_db.register_function(deterministic=True)
def to_lower_2(s):
return s.lower()
fresh_db.conn.create_function.assert_called_with(
"to_lower_2", 1, to_lower_2, deterministic=True
)
first = True
def side_effect(*args, **kwargs):
# Raise exception only first time this is called
nonlocal first
if first:
first = False
raise sqlite3.NotSupportedError()
# But if sqlite3.NotSupportedError is raised, it tries again
fresh_db.conn.create_function.reset_mock()
fresh_db.conn.create_function.side_effect = side_effect
@fresh_db.register_function(deterministic=True)
def to_lower_3(s):
return s.lower()
# Should have been called once with deterministic=True and once without
assert fresh_db.conn.create_function.call_args_list == [
call("to_lower_3", 1, to_lower_3, deterministic=True),
call("to_lower_3", 1, to_lower_3),
]
def test_register_function_replace(fresh_db):
@fresh_db.register_function()
def one():
return "one"
assert "one" == fresh_db.execute("select one()").fetchone()[0]
# This will silently fail to replaec the function
@fresh_db.register_function()
def one(): # noqa
return "two"
assert "one" == fresh_db.execute("select one()").fetchone()[0]
# This will replace it
@fresh_db.register_function(replace=True)
def one(): # noqa
return "two"
assert "two" == fresh_db.execute("select one()").fetchone()[0]
|
