Repository navigation
Expand file tree
/
Copy pathtools.py
More file actions
434 lines (345 loc) · 12.6 KB
/
Copy pathtools.py
File metadata and controls
434 lines (345 loc) · 12.6 KB
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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
"""Generic testing tools.
Authors
-------
- Fernando Perez <[email protected]>
"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import os
from pathlib import Path
import re
import sys
import tempfile
import unittest
from contextlib import contextmanager
from io import StringIO
from subprocess import Popen, PIPE
from unittest.mock import patch
from traitlets.config.loader import Config
from IPython.utils.process import get_output_error_code
from IPython.utils.text import list_strings
from IPython.utils.io import temp_pyfile, Tee
from IPython.utils import py3compat
from . import decorators as dec
from . import skipdoctest
# The docstring for full_path doctests differently on win32 (different path
# separator) so just skip the doctest there. The example remains informative.
doctest_deco = skipdoctest.skip_doctest if sys.platform == 'win32' else dec.null_deco
@doctest_deco
def full_path(startPath: str, files: list[str]) -> list[str]:
"""Make full paths for all the listed files, based on startPath.
Only the base part of startPath is kept, since this routine is typically
used with a script's ``__file__`` variable as startPath. The base of startPath
is then prepended to all the listed files, forming the output list.
Parameters
----------
startPath : string
Initial path to use as the base for the results. This path is split
using os.path.split() and only its first component is kept.
files : list
One or more files.
Examples
--------
>>> full_path('/foo/bar.py',['a.txt','b.txt'])
['/foo/a.txt', '/foo/b.txt']
>>> full_path('/foo',['a.txt','b.txt'])
['/a.txt', '/b.txt']
"""
assert isinstance(files, list)
base = os.path.split(startPath)[0]
return [ os.path.join(base,f) for f in files ]
def parse_test_output(txt):
"""Parse the output of a test run and return errors, failures.
Parameters
----------
txt : str
Text output of a test run, assumed to contain a line of one of the
following forms::
'FAILED (errors=1)'
'FAILED (failures=1)'
'FAILED (errors=1, failures=1)'
Returns
-------
nerr, nfail
number of errors and failures.
"""
err_m = re.search(r'^FAILED \(errors=(\d+)\)', txt, re.MULTILINE)
if err_m:
nerr = int(err_m.group(1))
nfail = 0
return nerr, nfail
fail_m = re.search(r'^FAILED \(failures=(\d+)\)', txt, re.MULTILINE)
if fail_m:
nerr = 0
nfail = int(fail_m.group(1))
return nerr, nfail
both_m = re.search(r'^FAILED \(errors=(\d+), failures=(\d+)\)', txt,
re.MULTILINE)
if both_m:
nerr = int(both_m.group(1))
nfail = int(both_m.group(2))
return nerr, nfail
# If the input didn't match any of these forms, assume no error/failures
return 0, 0
# So nose doesn't think this is a test
parse_test_output.__test__ = False
def default_argv():
"""Return a valid default argv for creating testing instances of ipython"""
return [
"--quick", # so no config file is loaded
# Other defaults to minimize side effects on stdout
"--colors=nocolor",
"--no-term-title",
"--no-banner",
"--autocall=0",
]
def default_config():
"""Return a config object with good defaults for testing."""
config = Config()
config.TerminalInteractiveShell.colors = "nocolor"
config.TerminalTerminalInteractiveShell.term_title = (False,)
config.TerminalInteractiveShell.autocall = 0
f = tempfile.NamedTemporaryFile(suffix="test_hist.sqlite", delete=False)
config.HistoryManager.hist_file = Path(f.name)
f.close()
config.HistoryManager.db_cache_size = 10000
return config
def get_ipython_cmd(as_string=False):
"""
Return appropriate IPython command line name. By default, this will return
a list that can be used with subprocess.Popen, for example, but passing
`as_string=True` allows for returning the IPython command as a string.
Parameters
----------
as_string: bool
Flag to allow to return the command as a string.
"""
ipython_cmd = [sys.executable, "-m", "IPython"]
if as_string:
ipython_cmd = " ".join(ipython_cmd)
return ipython_cmd
def ipexec(fname, options=None, commands=()):
"""Utility to call 'ipython filename'.
Starts IPython with a minimal and safe configuration to make startup as fast
as possible.
Note that this starts IPython in a subprocess!
Parameters
----------
fname : str, Path
Name of file to be executed (should have .py or .ipy extension).
options : optional, list
Extra command-line flags to be passed to IPython.
commands : optional, list
Commands to send in on stdin
Returns
-------
``(stdout, stderr)`` of ipython subprocess.
"""
__tracebackhide__ = True
if options is None:
options = []
cmdargs = default_argv() + options
test_dir = os.path.dirname(__file__)
ipython_cmd = get_ipython_cmd()
# Absolute path for filename
full_fname = os.path.join(test_dir, fname)
full_cmd = ipython_cmd + cmdargs + ['--', full_fname]
env = os.environ.copy()
# FIXME: ignore all warnings in ipexec while we have shims
# should we keep suppressing warnings here, even after removing shims?
env['PYTHONWARNINGS'] = 'ignore'
# env.pop('PYTHONWARNINGS', None) # Avoid extraneous warnings appearing on stderr
# Prevent coloring under PyCharm ("\x1b[0m" at the end of the stdout)
env.pop("PYCHARM_HOSTED", None)
for k, v in env.items():
# Debug a bizarre failure we've seen on Windows:
# TypeError: environment can only contain strings
if not isinstance(v, str):
print(k, v)
p = Popen(full_cmd, stdout=PIPE, stderr=PIPE, stdin=PIPE, env=env)
out, err = p.communicate(input=py3compat.encode('\n'.join(commands)) or None)
out, err = py3compat.decode(out), py3compat.decode(err)
# `import readline` causes 'ESC[?1034h' to be output sometimes,
# so strip that out before doing comparisons
if out:
out = re.sub(r'\x1b\[[^h]+h', '', out)
return out, err
def ipexec_validate(fname, expected_out, expected_err='',
options=None, commands=()):
"""Utility to call 'ipython filename' and validate output/error.
This function raises an AssertionError if the validation fails.
Note that this starts IPython in a subprocess!
Parameters
----------
fname : str, Path
Name of the file to be executed (should have .py or .ipy extension).
expected_out : str
Expected stdout of the process.
expected_err : optional, str
Expected stderr of the process.
options : optional, list
Extra command-line flags to be passed to IPython.
Returns
-------
None
"""
__tracebackhide__ = True
out, err = ipexec(fname, options, commands)
# print('OUT', out) # dbg
# print('ERR', err) # dbg
# If there are any errors, we must check those before stdout, as they may be
# more informative than simply having an empty stdout.
if err:
if expected_err:
assert "\n".join(err.strip().splitlines()) == "\n".join(
expected_err.strip().splitlines()
)
else:
raise ValueError('Running file %r produced error: %r' %
(fname, err))
# If no errors or output on stderr was expected, match stdout
assert "\n".join(out.strip().splitlines()) == "\n".join(
expected_out.strip().splitlines()
)
class TempFileMixin(unittest.TestCase):
"""Utility class to create temporary Python/IPython files.
Meant as a mixin class for test cases."""
def mktmp(self, src, ext='.py'):
"""Make a valid python temp file."""
fname = temp_pyfile(src, ext)
if not hasattr(self, 'tmps'):
self.tmps=[]
self.tmps.append(fname)
self.fname = fname
def tearDown(self):
# If the tmpfile wasn't made because of skipped tests, like in
# win32, there's nothing to cleanup.
if hasattr(self, 'tmps'):
for fname in self.tmps:
# If the tmpfile wasn't made because of skipped tests, like in
# win32, there's nothing to cleanup.
try:
os.unlink(fname)
except:
# On Windows, even though we close the file, we still can't
# delete it. I have no clue why
pass
def __enter__(self):
return self
def __exit__(self, exc_type, exc_value, traceback):
self.tearDown()
MyStringIO = StringIO
_re_type = type(re.compile(r''))
notprinted_msg = """Did not find {0!r} in printed output (on {1}):
-------
{2!s}
-------
"""
class AssertPrints:
"""Context manager for testing that code prints certain text.
Examples
--------
>>> with AssertPrints("abc", suppress=False):
... print("abcd")
... print("def")
...
abcd
def
"""
def __init__(self, s, channel='stdout', suppress=True):
self.s = s
if isinstance(self.s, (str, _re_type)):
self.s = [self.s]
self.channel = channel
self.suppress = suppress
def __enter__(self):
self.orig_stream = getattr(sys, self.channel)
self.buffer = MyStringIO()
self.tee = Tee(self.buffer, channel=self.channel)
setattr(sys, self.channel, self.buffer if self.suppress else self.tee)
def __exit__(self, etype, value, traceback):
__tracebackhide__ = True
try:
if value is not None:
# If an error was raised, don't check anything else
return False
self.tee.flush()
setattr(sys, self.channel, self.orig_stream)
printed = self.buffer.getvalue()
for s in self.s:
if isinstance(s, _re_type):
assert s.search(printed), notprinted_msg.format(s.pattern, self.channel, printed)
else:
assert s in printed, notprinted_msg.format(s, self.channel, printed)
return False
finally:
self.tee.close()
printed_msg = """Found {0!r} in printed output (on {1}):
-------
{2!s}
-------
"""
class AssertNotPrints(AssertPrints):
"""Context manager for checking that certain output *isn't* produced.
Counterpart of AssertPrints"""
def __exit__(self, etype, value, traceback):
__tracebackhide__ = True
try:
if value is not None:
# If an error was raised, don't check anything else
self.tee.close()
return False
self.tee.flush()
setattr(sys, self.channel, self.orig_stream)
printed = self.buffer.getvalue()
for s in self.s:
if isinstance(s, _re_type):
assert not s.search(printed),printed_msg.format(
s.pattern, self.channel, printed)
else:
assert s not in printed, printed_msg.format(
s, self.channel, printed)
return False
finally:
self.tee.close()
@contextmanager
def make_tempfile(name):
"""Create an empty, named, temporary file for the duration of the context."""
open(name, "w", encoding="utf-8").close()
try:
yield
finally:
os.unlink(name)
def fake_input(inputs):
"""Temporarily replace the input() function to return the given values
Use as a context manager:
with fake_input(['result1', 'result2']):
...
Values are returned in order. If input() is called again after the last value
was used, EOFError is raised.
"""
it = iter(inputs)
def mock_input(prompt=''):
try:
return next(it)
except StopIteration as e:
raise EOFError('No more inputs given') from e
return patch('builtins.input', mock_input)
def help_output_test(subcommand=''):
"""test that `ipython [subcommand] -h` works"""
cmd = get_ipython_cmd() + [subcommand, '-h']
out, err, rc = get_output_error_code(cmd)
assert rc == 0, err
assert "Traceback" not in err
assert "Options" in out
assert "--help-all" in out
return out, err
def help_all_output_test(subcommand=''):
"""test that `ipython [subcommand] --help-all` works"""
cmd = get_ipython_cmd() + [subcommand, '--help-all']
out, err, rc = get_output_error_code(cmd)
assert rc == 0, err
assert "Traceback" not in err
assert "Options" in out
assert "Class" in out
return out, err