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  • Committer: Teddy Hogeborn
  • Date: 2019-02-28 21:07:58 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 382.
  • Revision ID: teddy@recompile.se-20190228210758-zt2bfeer3v66porp
mandos-ctl (rfc3339_duration_to_delta): Improve tests

* mandos-ctl (rfc3339_duration_to_delta): Add test for month-only
                                          value, and tests that
                                          invalid values raises
                                          ValueError.

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mandos-ctl
1
1
#!/usr/bin/python
2
 
# -*- mode: python; coding: utf-8 -*-
3
 
# 
 
2
# -*- mode: python; coding: utf-8; after-save-hook: (lambda () (let ((command (if (and (boundp 'tramp-file-name-structure) (string-match (car tramp-file-name-structure) (buffer-file-name))) (tramp-file-name-localname (tramp-dissect-file-name (buffer-file-name))) (buffer-file-name)))) (if (= (shell-command (format "%s --check" (shell-quote-argument command)) "*Test*") 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w)) (kill-buffer "*Test*")) (display-buffer "*Test*")))); -*-
 
3
#
4
4
# Mandos Monitor - Control and monitor the Mandos server
5
 
# 
6
 
# Copyright © 2008-2012 Teddy Hogeborn
7
 
# Copyright © 2008-2012 Björn Påhlsson
8
 
# 
9
 
# This program is free software: you can redistribute it and/or modify
10
 
# it under the terms of the GNU General Public License as published by
 
5
#
 
6
# Copyright © 2008-2019 Teddy Hogeborn
 
7
# Copyright © 2008-2019 Björn Påhlsson
 
8
#
 
9
# This file is part of Mandos.
 
10
#
 
11
# Mandos is free software: you can redistribute it and/or modify it
 
12
# under the terms of the GNU General Public License as published by
11
13
# the Free Software Foundation, either version 3 of the License, or
12
14
# (at your option) any later version.
13
15
#
14
 
#     This program is distributed in the hope that it will be useful,
15
 
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
16
#     Mandos is distributed in the hope that it will be useful, but
 
17
#     WITHOUT ANY WARRANTY; without even the implied warranty of
16
18
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
19
#     GNU General Public License for more details.
18
 
# 
 
20
#
19
21
# You should have received a copy of the GNU General Public License
20
 
# along with this program.  If not, see
21
 
# <http://www.gnu.org/licenses/>.
22
 
# 
 
22
# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
23
#
23
24
# Contact the authors at <mandos@recompile.se>.
24
 
# 
 
25
#
25
26
 
26
27
from __future__ import (division, absolute_import, print_function,
27
28
                        unicode_literals)
28
29
 
29
 
from future_builtins import *
 
30
try:
 
31
    from future_builtins import *
 
32
except ImportError:
 
33
    pass
30
34
 
31
35
import sys
32
 
import dbus
33
36
import argparse
34
37
import locale
35
38
import datetime
36
39
import re
37
40
import os
 
41
import collections
 
42
import json
 
43
import unittest
 
44
import logging
 
45
 
 
46
import dbus
 
47
 
 
48
# Show warnings by default
 
49
if not sys.warnoptions:
 
50
    import warnings
 
51
    warnings.simplefilter("default")
 
52
 
 
53
log = logging.getLogger(sys.argv[0])
 
54
logging.basicConfig(level="INFO", # Show info level messages
 
55
                    format="%(message)s") # Show basic log messages
 
56
 
 
57
logging.captureWarnings(True)   # Show warnings via the logging system
 
58
 
 
59
if sys.version_info.major == 2:
 
60
    str = unicode
38
61
 
39
62
locale.setlocale(locale.LC_ALL, "")
40
63
 
48
71
    "Interval": "Interval",
49
72
    "Host": "Host",
50
73
    "Fingerprint": "Fingerprint",
 
74
    "KeyID": "Key ID",
51
75
    "CheckerRunning": "Check Is Running",
52
76
    "LastEnabled": "Last Enabled",
53
77
    "ApprovalPending": "Approval Is Pending",
55
79
    "ApprovalDelay": "Approval Delay",
56
80
    "ApprovalDuration": "Approval Duration",
57
81
    "Checker": "Checker",
58
 
    "ExtendedTimeout" : "Extended Timeout"
59
 
    }
 
82
    "ExtendedTimeout": "Extended Timeout",
 
83
    "Expires": "Expires",
 
84
    "LastCheckerStatus": "Last Checker Status",
 
85
}
60
86
defaultkeywords = ("Name", "Enabled", "Timeout", "LastCheckedOK")
61
87
domain = "se.recompile"
62
88
busname = domain + ".Mandos"
63
89
server_path = "/"
64
90
server_interface = domain + ".Mandos"
65
91
client_interface = domain + ".Mandos.Client"
66
 
version = "1.6.0"
67
 
 
68
 
def timedelta_to_milliseconds(td):
69
 
    """Convert a datetime.timedelta object to milliseconds"""
70
 
    return ((td.days * 24 * 60 * 60 * 1000)
71
 
            + (td.seconds * 1000)
72
 
            + (td.microseconds // 1000))
 
92
version = "1.8.3"
 
93
 
 
94
 
 
95
try:
 
96
    dbus.OBJECT_MANAGER_IFACE
 
97
except AttributeError:
 
98
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
 
99
 
73
100
 
74
101
def milliseconds_to_string(ms):
75
102
    td = datetime.timedelta(0, 0, 0, ms)
76
103
    return ("{days}{hours:02}:{minutes:02}:{seconds:02}"
77
 
            .format(days = "{0}T".format(td.days) if td.days else "",
78
 
                    hours = td.seconds // 3600,
79
 
                    minutes = (td.seconds % 3600) // 60,
80
 
                    seconds = td.seconds % 60,
81
 
                    ))
 
104
            .format(days="{}T".format(td.days) if td.days else "",
 
105
                    hours=td.seconds // 3600,
 
106
                    minutes=(td.seconds % 3600) // 60,
 
107
                    seconds=td.seconds % 60))
 
108
 
 
109
 
 
110
def rfc3339_duration_to_delta(duration):
 
111
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
112
 
 
113
    >>> rfc3339_duration_to_delta("P7D")
 
114
    datetime.timedelta(7)
 
115
    >>> rfc3339_duration_to_delta("PT60S")
 
116
    datetime.timedelta(0, 60)
 
117
    >>> rfc3339_duration_to_delta("PT60M")
 
118
    datetime.timedelta(0, 3600)
 
119
    >>> rfc3339_duration_to_delta("P60M")
 
120
    datetime.timedelta(1680)
 
121
    >>> rfc3339_duration_to_delta("PT24H")
 
122
    datetime.timedelta(1)
 
123
    >>> rfc3339_duration_to_delta("P1W")
 
124
    datetime.timedelta(7)
 
125
    >>> rfc3339_duration_to_delta("PT5M30S")
 
126
    datetime.timedelta(0, 330)
 
127
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
128
    datetime.timedelta(1, 200)
 
129
    >>> # Can not be empty:
 
130
    >>> rfc3339_duration_to_delta("")
 
131
    Traceback (most recent call last):
 
132
    ...
 
133
    ValueError: Invalid RFC 3339 duration: u''
 
134
    >>> # Must start with "P":
 
135
    >>> rfc3339_duration_to_delta("1D")
 
136
    Traceback (most recent call last):
 
137
    ...
 
138
    ValueError: Invalid RFC 3339 duration: u'1D'
 
139
    >>> # Must use correct order
 
140
    >>> rfc3339_duration_to_delta("PT1S2M")
 
141
    Traceback (most recent call last):
 
142
    ...
 
143
    ValueError: Invalid RFC 3339 duration: u'PT1S2M'
 
144
    >>> # Time needs time marker
 
145
    >>> rfc3339_duration_to_delta("P1H2S")
 
146
    Traceback (most recent call last):
 
147
    ...
 
148
    ValueError: Invalid RFC 3339 duration: u'P1H2S'
 
149
    >>> # Weeks can not be combined with anything else
 
150
    >>> rfc3339_duration_to_delta("P1D2W")
 
151
    Traceback (most recent call last):
 
152
    ...
 
153
    ValueError: Invalid RFC 3339 duration: u'P1D2W'
 
154
    >>> rfc3339_duration_to_delta("P2W2H")
 
155
    Traceback (most recent call last):
 
156
    ...
 
157
    ValueError: Invalid RFC 3339 duration: u'P2W2H'
 
158
    """
 
159
 
 
160
    # Parsing an RFC 3339 duration with regular expressions is not
 
161
    # possible - there would have to be multiple places for the same
 
162
    # values, like seconds.  The current code, while more esoteric, is
 
163
    # cleaner without depending on a parsing library.  If Python had a
 
164
    # built-in library for parsing we would use it, but we'd like to
 
165
    # avoid excessive use of external libraries.
 
166
 
 
167
    # New type for defining tokens, syntax, and semantics all-in-one
 
168
    Token = collections.namedtuple("Token", (
 
169
        "regexp",  # To match token; if "value" is not None, must have
 
170
                   # a "group" containing digits
 
171
        "value",   # datetime.timedelta or None
 
172
        "followers"))           # Tokens valid after this token
 
173
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
174
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
175
    token_end = Token(re.compile(r"$"), None, frozenset())
 
176
    token_second = Token(re.compile(r"(\d+)S"),
 
177
                         datetime.timedelta(seconds=1),
 
178
                         frozenset((token_end, )))
 
179
    token_minute = Token(re.compile(r"(\d+)M"),
 
180
                         datetime.timedelta(minutes=1),
 
181
                         frozenset((token_second, token_end)))
 
182
    token_hour = Token(re.compile(r"(\d+)H"),
 
183
                       datetime.timedelta(hours=1),
 
184
                       frozenset((token_minute, token_end)))
 
185
    token_time = Token(re.compile(r"T"),
 
186
                       None,
 
187
                       frozenset((token_hour, token_minute,
 
188
                                  token_second)))
 
189
    token_day = Token(re.compile(r"(\d+)D"),
 
190
                      datetime.timedelta(days=1),
 
191
                      frozenset((token_time, token_end)))
 
192
    token_month = Token(re.compile(r"(\d+)M"),
 
193
                        datetime.timedelta(weeks=4),
 
194
                        frozenset((token_day, token_end)))
 
195
    token_year = Token(re.compile(r"(\d+)Y"),
 
196
                       datetime.timedelta(weeks=52),
 
197
                       frozenset((token_month, token_end)))
 
198
    token_week = Token(re.compile(r"(\d+)W"),
 
199
                       datetime.timedelta(weeks=1),
 
200
                       frozenset((token_end, )))
 
201
    token_duration = Token(re.compile(r"P"), None,
 
202
                           frozenset((token_year, token_month,
 
203
                                      token_day, token_time,
 
204
                                      token_week)))
 
205
    # Define starting values:
 
206
    # Value so far
 
207
    value = datetime.timedelta()
 
208
    found_token = None
 
209
    # Following valid tokens
 
210
    followers = frozenset((token_duration, ))
 
211
    # String left to parse
 
212
    s = duration
 
213
    # Loop until end token is found
 
214
    while found_token is not token_end:
 
215
        # Search for any currently valid tokens
 
216
        for token in followers:
 
217
            match = token.regexp.match(s)
 
218
            if match is not None:
 
219
                # Token found
 
220
                if token.value is not None:
 
221
                    # Value found, parse digits
 
222
                    factor = int(match.group(1), 10)
 
223
                    # Add to value so far
 
224
                    value += factor * token.value
 
225
                # Strip token from string
 
226
                s = token.regexp.sub("", s, 1)
 
227
                # Go to found token
 
228
                found_token = token
 
229
                # Set valid next tokens
 
230
                followers = found_token.followers
 
231
                break
 
232
        else:
 
233
            # No currently valid tokens were found
 
234
            raise ValueError("Invalid RFC 3339 duration: {!r}"
 
235
                             .format(duration))
 
236
    # End token found
 
237
    return value
 
238
 
82
239
 
83
240
def string_to_delta(interval):
84
241
    """Parse a string and return a datetime.timedelta
85
 
    
86
 
    >>> string_to_delta("7d")
 
242
 
 
243
    >>> string_to_delta('7d')
87
244
    datetime.timedelta(7)
88
 
    >>> string_to_delta("60s")
 
245
    >>> string_to_delta('60s')
89
246
    datetime.timedelta(0, 60)
90
 
    >>> string_to_delta("60m")
 
247
    >>> string_to_delta('60m')
91
248
    datetime.timedelta(0, 3600)
92
 
    >>> string_to_delta("24h")
 
249
    >>> string_to_delta('24h')
93
250
    datetime.timedelta(1)
94
 
    >>> string_to_delta("1w")
 
251
    >>> string_to_delta('1w')
95
252
    datetime.timedelta(7)
96
 
    >>> string_to_delta("5m 30s")
 
253
    >>> string_to_delta('5m 30s')
97
254
    datetime.timedelta(0, 330)
98
255
    """
 
256
 
 
257
    try:
 
258
        return rfc3339_duration_to_delta(interval)
 
259
    except ValueError:
 
260
        pass
 
261
 
99
262
    value = datetime.timedelta(0)
100
 
    regexp = re.compile("(\d+)([dsmhw]?)")
101
 
    
 
263
    regexp = re.compile(r"(\d+)([dsmhw]?)")
 
264
 
102
265
    for num, suffix in regexp.findall(interval):
103
266
        if suffix == "d":
104
267
            value += datetime.timedelta(int(num))
114
277
            value += datetime.timedelta(0, 0, 0, int(num))
115
278
    return value
116
279
 
 
280
 
117
281
def print_clients(clients, keywords):
118
282
    def valuetostring(value, keyword):
119
 
        if type(value) is dbus.Boolean:
 
283
        if isinstance(value, dbus.Boolean):
120
284
            return "Yes" if value else "No"
121
285
        if keyword in ("Timeout", "Interval", "ApprovalDelay",
122
286
                       "ApprovalDuration", "ExtendedTimeout"):
123
287
            return milliseconds_to_string(value)
124
 
        return unicode(value)
125
 
    
 
288
        return str(value)
 
289
 
126
290
    # Create format string to print table rows
127
291
    format_string = " ".join("{{{key}:{width}}}".format(
128
 
            width = max(len(tablewords[key]),
129
 
                        max(len(valuetostring(client[key],
130
 
                                              key))
131
 
                            for client in
132
 
                            clients)),
133
 
            key = key) for key in keywords)
 
292
        width=max(len(tablewords[key]),
 
293
                  max(len(valuetostring(client[key], key))
 
294
                      for client in clients)),
 
295
        key=key)
 
296
                             for key in keywords)
134
297
    # Print header line
135
298
    print(format_string.format(**tablewords))
136
299
    for client in clients:
137
 
        print(format_string.format(**dict((key,
138
 
                                           valuetostring(client[key],
139
 
                                                         key))
140
 
                                          for key in keywords)))
 
300
        print(format_string
 
301
              .format(**{key: valuetostring(client[key], key)
 
302
                         for key in keywords}))
 
303
 
141
304
 
142
305
def has_actions(options):
143
306
    return any((options.enable,
159
322
                options.approve,
160
323
                options.deny))
161
324
 
 
325
 
162
326
def main():
163
327
    parser = argparse.ArgumentParser()
164
328
    parser.add_argument("--version", action="version",
165
 
                        version = "%(prog)s {0}".format(version),
 
329
                        version="%(prog)s {}".format(version),
166
330
                        help="show version number and exit")
167
331
    parser.add_argument("-a", "--all", action="store_true",
168
332
                        help="Select all clients")
169
333
    parser.add_argument("-v", "--verbose", action="store_true",
170
334
                        help="Print all fields")
 
335
    parser.add_argument("-j", "--dump-json", action="store_true",
 
336
                        help="Dump client data in JSON format")
171
337
    parser.add_argument("-e", "--enable", action="store_true",
172
338
                        help="Enable client")
173
339
    parser.add_argument("-d", "--disable", action="store_true",
201
367
    parser.add_argument("--approval-duration",
202
368
                        help="Set duration of one client approval")
203
369
    parser.add_argument("-H", "--host", help="Set host for client")
204
 
    parser.add_argument("-s", "--secret", type=file,
 
370
    parser.add_argument("-s", "--secret",
 
371
                        type=argparse.FileType(mode="rb"),
205
372
                        help="Set password blob (file) for client")
206
373
    parser.add_argument("-A", "--approve", action="store_true",
207
374
                        help="Approve any current client request")
208
375
    parser.add_argument("-D", "--deny", action="store_true",
209
376
                        help="Deny any current client request")
 
377
    parser.add_argument("--check", action="store_true",
 
378
                        help="Run self-test")
210
379
    parser.add_argument("client", nargs="*", help="Client name")
211
380
    options = parser.parse_args()
212
 
    
 
381
 
213
382
    if has_actions(options) and not (options.client or options.all):
214
383
        parser.error("Options require clients names or --all.")
215
384
    if options.verbose and has_actions(options):
216
 
        parser.error("--verbose can only be used alone or with"
217
 
                     " --all.")
 
385
        parser.error("--verbose can only be used alone.")
 
386
    if options.dump_json and (options.verbose
 
387
                              or has_actions(options)):
 
388
        parser.error("--dump-json can only be used alone.")
218
389
    if options.all and not has_actions(options):
219
390
        parser.error("--all requires an action.")
220
 
    
 
391
 
221
392
    try:
222
393
        bus = dbus.SystemBus()
223
394
        mandos_dbus_objc = bus.get_object(busname, server_path)
224
395
    except dbus.exceptions.DBusException:
225
 
        print("Could not connect to Mandos server",
226
 
              file=sys.stderr)
 
396
        log.critical("Could not connect to Mandos server")
227
397
        sys.exit(1)
228
 
    
 
398
 
229
399
    mandos_serv = dbus.Interface(mandos_dbus_objc,
230
 
                                 dbus_interface = server_interface)
231
 
    
232
 
    #block stderr since dbus library prints to stderr
 
400
                                 dbus_interface=server_interface)
 
401
    mandos_serv_object_manager = dbus.Interface(
 
402
        mandos_dbus_objc, dbus_interface=dbus.OBJECT_MANAGER_IFACE)
 
403
 
 
404
    # block stderr since dbus library prints to stderr
233
405
    null = os.open(os.path.devnull, os.O_RDWR)
234
406
    stderrcopy = os.dup(sys.stderr.fileno())
235
407
    os.dup2(null, sys.stderr.fileno())
236
408
    os.close(null)
237
409
    try:
238
410
        try:
239
 
            mandos_clients = mandos_serv.GetAllClientsWithProperties()
 
411
            mandos_clients = {path: ifs_and_props[client_interface]
 
412
                              for path, ifs_and_props in
 
413
                              mandos_serv_object_manager
 
414
                              .GetManagedObjects().items()
 
415
                              if client_interface in ifs_and_props}
240
416
        finally:
241
 
            #restore stderr
 
417
            # restore stderr
242
418
            os.dup2(stderrcopy, sys.stderr.fileno())
243
419
            os.close(stderrcopy)
244
 
    except dbus.exceptions.DBusException:
245
 
        print("Access denied: Accessing mandos server through dbus.",
246
 
              file=sys.stderr)
 
420
    except dbus.exceptions.DBusException as e:
 
421
        log.critical("Failed to access Mandos server through D-Bus:"
 
422
                     "\n%s", e)
247
423
        sys.exit(1)
248
 
    
 
424
 
249
425
    # Compile dict of (clients: properties) to process
250
 
    clients={}
251
 
    
 
426
    clients = {}
 
427
 
252
428
    if options.all or not options.client:
253
 
        clients = dict((bus.get_object(busname, path), properties)
254
 
                       for path, properties in
255
 
                       mandos_clients.iteritems())
 
429
        clients = {bus.get_object(busname, path): properties
 
430
                   for path, properties in mandos_clients.items()}
256
431
    else:
257
432
        for name in options.client:
258
 
            for path, client in mandos_clients.iteritems():
 
433
            for path, client in mandos_clients.items():
259
434
                if client["Name"] == name:
260
435
                    client_objc = bus.get_object(busname, path)
261
436
                    clients[client_objc] = client
262
437
                    break
263
438
            else:
264
 
                print("Client not found on server: {0!r}"
265
 
                      .format(name), file=sys.stderr)
 
439
                log.critical("Client not found on server: %r", name)
266
440
                sys.exit(1)
267
 
    
 
441
 
268
442
    if not has_actions(options) and clients:
269
 
        if options.verbose:
270
 
            keywords = ("Name", "Enabled", "Timeout",
271
 
                        "LastCheckedOK", "Created", "Interval",
272
 
                        "Host", "Fingerprint", "CheckerRunning",
 
443
        if options.verbose or options.dump_json:
 
444
            keywords = ("Name", "Enabled", "Timeout", "LastCheckedOK",
 
445
                        "Created", "Interval", "Host", "KeyID",
 
446
                        "Fingerprint", "CheckerRunning",
273
447
                        "LastEnabled", "ApprovalPending",
274
 
                        "ApprovedByDefault",
275
 
                        "LastApprovalRequest", "ApprovalDelay",
276
 
                        "ApprovalDuration", "Checker",
277
 
                        "ExtendedTimeout")
 
448
                        "ApprovedByDefault", "LastApprovalRequest",
 
449
                        "ApprovalDelay", "ApprovalDuration",
 
450
                        "Checker", "ExtendedTimeout", "Expires",
 
451
                        "LastCheckerStatus")
278
452
        else:
279
453
            keywords = defaultkeywords
280
 
        
281
 
        print_clients(clients.values(), keywords)
 
454
 
 
455
        if options.dump_json:
 
456
            json.dump({client["Name"]: {key:
 
457
                                        bool(client[key])
 
458
                                        if isinstance(client[key],
 
459
                                                      dbus.Boolean)
 
460
                                        else client[key]
 
461
                                        for key in keywords}
 
462
                       for client in clients.values()},
 
463
                      fp=sys.stdout, indent=4,
 
464
                      separators=(',', ': '))
 
465
            print()
 
466
        else:
 
467
            print_clients(clients.values(), keywords)
282
468
    else:
283
469
        # Process each client in the list by all selected options
284
470
        for client in clients:
 
471
 
285
472
            def set_client_prop(prop, value):
286
473
                """Set a Client D-Bus property"""
287
474
                client.Set(client_interface, prop, value,
288
475
                           dbus_interface=dbus.PROPERTIES_IFACE)
 
476
 
289
477
            def set_client_prop_ms(prop, value):
290
478
                """Set a Client D-Bus property, converted
291
479
                from a string to milliseconds."""
292
480
                set_client_prop(prop,
293
 
                                timedelta_to_milliseconds
294
 
                                (string_to_delta(value)))
 
481
                                string_to_delta(value).total_seconds()
 
482
                                * 1000)
 
483
 
295
484
            if options.remove:
296
485
                mandos_serv.RemoveClient(client.__dbus_object_path__)
297
486
            if options.enable:
305
494
            if options.stop_checker:
306
495
                set_client_prop("CheckerRunning", dbus.Boolean(False))
307
496
            if options.is_enabled:
308
 
                sys.exit(0 if client.Get(client_interface,
309
 
                                         "Enabled",
310
 
                                         dbus_interface=
311
 
                                         dbus.PROPERTIES_IFACE)
312
 
                         else 1)
 
497
                if client.Get(client_interface, "Enabled",
 
498
                              dbus_interface=dbus.PROPERTIES_IFACE):
 
499
                    sys.exit(0)
 
500
                else:
 
501
                    sys.exit(1)
313
502
            if options.checker is not None:
314
503
                set_client_prop("Checker", options.checker)
315
504
            if options.host is not None:
341
530
                client.Approve(dbus.Boolean(False),
342
531
                               dbus_interface=client_interface)
343
532
 
 
533
 
 
534
class Test_milliseconds_to_string(unittest.TestCase):
 
535
    def test_all(self):
 
536
        self.assertEqual(milliseconds_to_string(93785000),
 
537
                         "1T02:03:05")
 
538
    def test_no_days(self):
 
539
        self.assertEqual(milliseconds_to_string(7385000), "02:03:05")
 
540
    def test_all_zero(self):
 
541
        self.assertEqual(milliseconds_to_string(0), "00:00:00")
 
542
    def test_no_fractional_seconds(self):
 
543
        self.assertEqual(milliseconds_to_string(400), "00:00:00")
 
544
        self.assertEqual(milliseconds_to_string(900), "00:00:00")
 
545
        self.assertEqual(milliseconds_to_string(1900), "00:00:01")
 
546
 
 
547
 
 
548
def should_only_run_tests():
 
549
    parser = argparse.ArgumentParser(add_help=False)
 
550
    parser.add_argument("--check", action='store_true')
 
551
    args, unknown_args = parser.parse_known_args()
 
552
    run_tests = args.check
 
553
    if run_tests:
 
554
        # Remove --check argument from sys.argv
 
555
        sys.argv[1:] = unknown_args
 
556
    return run_tests
 
557
 
 
558
# Add all tests from doctest strings
 
559
def load_tests(loader, tests, none):
 
560
    import doctest
 
561
    tests.addTests(doctest.DocTestSuite())
 
562
    return tests
 
563
 
344
564
if __name__ == "__main__":
345
 
    main()
 
565
    if should_only_run_tests():
 
566
        # Call using ./tdd-python-script --check [--verbose]
 
567
        unittest.main()
 
568
    else:
 
569
        main()