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
|
import importlib.util
import itertools
import os
import re
from collections import defaultdict
import pytest
try:
from mypy import api
except ImportError:
NO_MYPY = True
else:
NO_MYPY = False
TESTS_DIR = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"typing",
)
PASS_DIR = os.path.join(TESTS_DIR, "pass")
FAIL_DIR = os.path.join(TESTS_DIR, "fail")
REVEAL_DIR = os.path.join(TESTS_DIR, "reveal")
MYPY_INI = os.path.join(TESTS_DIR, "mypy.ini")
CACHE_DIR = os.path.join(TESTS_DIR, ".mypy_cache")
def get_test_cases(directory):
for root, _, files in os.walk(directory):
for fname in files:
if os.path.splitext(fname)[-1] == ".py":
fullpath = os.path.join(root, fname)
# Use relative path for nice py.test name
relpath = os.path.relpath(fullpath, start=directory)
yield pytest.param(
fullpath,
# Manually specify a name for the test
id=relpath,
)
@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(PASS_DIR))
def test_success(path):
stdout, stderr, exitcode = api.run([
"--config-file",
MYPY_INI,
"--cache-dir",
CACHE_DIR,
path,
])
assert exitcode == 0, stdout
assert re.match(r"Success: no issues found in \d+ source files?", stdout.strip())
@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(FAIL_DIR))
def test_fail(path):
stdout, stderr, exitcode = api.run([
"--config-file",
MYPY_INI,
"--cache-dir",
CACHE_DIR,
path,
])
assert exitcode != 0
with open(path) as fin:
lines = fin.readlines()
errors = defaultdict(lambda: "")
error_lines = stdout.rstrip("\n").split("\n")
assert re.match(
r"Found \d+ errors? in \d+ files? \(checked \d+ source files?\)",
error_lines[-1].strip(),
)
for error_line in error_lines[:-1]:
error_line = error_line.strip()
if not error_line:
continue
match = re.match(
r"^.+\.py:(?P<lineno>\d+): (error|note): .+$",
error_line,
)
if match is None:
raise ValueError(f"Unexpected error line format: {error_line}")
lineno = int(match.group('lineno'))
errors[lineno] += error_line
for i, line in enumerate(lines):
lineno = i + 1
if " E:" not in line and lineno not in errors:
continue
target_line = lines[lineno - 1]
if "# E:" in target_line:
marker = target_line.split("# E:")[-1].strip()
assert lineno in errors, f'Extra error "{marker}"'
assert marker in errors[lineno]
else:
pytest.fail(f"Error {repr(errors[lineno])} not found")
@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(REVEAL_DIR))
def test_reveal(path):
stdout, stderr, exitcode = api.run([
"--config-file",
MYPY_INI,
"--cache-dir",
CACHE_DIR,
path,
])
with open(path) as fin:
lines = fin.readlines()
for error_line in stdout.split("\n"):
error_line = error_line.strip()
if not error_line:
continue
match = re.match(
r"^.+\.py:(?P<lineno>\d+): note: .+$",
error_line,
)
if match is None:
raise ValueError(f"Unexpected reveal line format: {error_line}")
lineno = int(match.group('lineno'))
assert "Revealed type is" in error_line
marker = lines[lineno - 1].split("# E:")[-1].strip()
assert marker in error_line
@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(PASS_DIR))
def test_code_runs(path):
path_without_extension, _ = os.path.splitext(path)
dirname, filename = path.split(os.sep)[-2:]
spec = importlib.util.spec_from_file_location(f"{dirname}.{filename}", path)
test_module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(test_module)
|
