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
|
import contextlib
import os
import os.path
import subprocess
import sys
import tempfile
from textwrap import dedent
import threading
import types
import unittest
from test import support
from test.support import os_helper
from test.support import interpreters
def _captured_script(script):
r, w = os.pipe()
indented = script.replace('\n', '\n ')
wrapped = dedent(f"""
import contextlib
with open({w}, 'w', encoding='utf-8') as spipe:
with contextlib.redirect_stdout(spipe):
{indented}
""")
return wrapped, open(r, encoding='utf-8')
def clean_up_interpreters():
for interp in interpreters.list_all():
if interp.id == 0: # main
continue
try:
interp.close()
except RuntimeError:
pass # already destroyed
def _run_output(interp, request, init=None):
script, rpipe = _captured_script(request)
with rpipe:
if init:
interp.prepare_main(init)
interp.exec(script)
return rpipe.read()
@contextlib.contextmanager
def _running(interp):
r, w = os.pipe()
def run():
interp.exec(dedent(f"""
# wait for "signal"
with open({r}) as rpipe:
rpipe.read()
"""))
t = threading.Thread(target=run)
t.start()
yield
with open(w, 'w') as spipe:
spipe.write('done')
t.join()
class TestBase(unittest.TestCase):
def tearDown(self):
clean_up_interpreters()
def pipe(self):
def ensure_closed(fd):
try:
os.close(fd)
except OSError:
pass
r, w = os.pipe()
self.addCleanup(lambda: ensure_closed(r))
self.addCleanup(lambda: ensure_closed(w))
return r, w
def temp_dir(self):
tempdir = tempfile.mkdtemp()
tempdir = os.path.realpath(tempdir)
self.addCleanup(lambda: os_helper.rmtree(tempdir))
return tempdir
@contextlib.contextmanager
def captured_thread_exception(self):
ctx = types.SimpleNamespace(caught=None)
def excepthook(args):
ctx.caught = args
orig_excepthook = threading.excepthook
threading.excepthook = excepthook
try:
yield ctx
finally:
threading.excepthook = orig_excepthook
def make_script(self, filename, dirname=None, text=None):
if text:
text = dedent(text)
if dirname is None:
dirname = self.temp_dir()
filename = os.path.join(dirname, filename)
os.makedirs(os.path.dirname(filename), exist_ok=True)
with open(filename, 'w', encoding='utf-8') as outfile:
outfile.write(text or '')
return filename
def make_module(self, name, pathentry=None, text=None):
if text:
text = dedent(text)
if pathentry is None:
pathentry = self.temp_dir()
else:
os.makedirs(pathentry, exist_ok=True)
*subnames, basename = name.split('.')
dirname = pathentry
for subname in subnames:
dirname = os.path.join(dirname, subname)
if os.path.isdir(dirname):
pass
elif os.path.exists(dirname):
raise Exception(dirname)
else:
os.mkdir(dirname)
initfile = os.path.join(dirname, '__init__.py')
if not os.path.exists(initfile):
with open(initfile, 'w'):
pass
filename = os.path.join(dirname, basename + '.py')
with open(filename, 'w', encoding='utf-8') as outfile:
outfile.write(text or '')
return filename
@support.requires_subprocess()
def run_python(self, *argv):
proc = subprocess.run(
[sys.executable, *argv],
capture_output=True,
text=True,
)
return proc.returncode, proc.stdout, proc.stderr
def assert_python_ok(self, *argv):
exitcode, stdout, stderr = self.run_python(*argv)
self.assertNotEqual(exitcode, 1)
return stdout, stderr
def assert_python_failure(self, *argv):
exitcode, stdout, stderr = self.run_python(*argv)
self.assertNotEqual(exitcode, 0)
return stdout, stderr
def assert_ns_equal(self, ns1, ns2, msg=None):
# This is mostly copied from TestCase.assertDictEqual.
self.assertEqual(type(ns1), type(ns2))
if ns1 == ns2:
return
import difflib
import pprint
from unittest.util import _common_shorten_repr
standardMsg = '%s != %s' % _common_shorten_repr(ns1, ns2)
diff = ('\n' + '\n'.join(difflib.ndiff(
pprint.pformat(vars(ns1)).splitlines(),
pprint.pformat(vars(ns2)).splitlines())))
diff = f'namespace({diff})'
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
|
