_ Git - youtube-dl/blob - test/test_utils.py

   1 #!/usr/bin/env python
   2 # coding: utf-8
   3
   4 from __future__ import unicode_literals
   5
   6 # Allow direct execution
   7 import os
   8 import sys
   9 import unittest
  10 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  11
  12
  13 # Various small unit tests
  14 import io
  15 import json
  16 import xml.etree.ElementTree
  17
  18 from youtube_dl.utils import (
  19     age_restricted,
  20     args_to_str,
  21     clean_html,
  22     DateRange,
  23     detect_exe_version,
  24     encodeFilename,
  25     escape_rfc3986,
  26     escape_url,
  27     find_xpath_attr,
  28     fix_xml_ampersands,
  29     InAdvancePagedList,
  30     intlist_to_bytes,
  31     is_html,
  32     js_to_json,
  33     limit_length,
  34     OnDemandPagedList,
  35     orderedSet,
  36     parse_duration,
  37     parse_filesize,
  38     parse_iso8601,
  39     read_batch_urls,
  40     sanitize_filename,
  41     shell_quote,
  42     smuggle_url,
  43     str_to_int,
  44     strip_jsonp,
  45     struct_unpack,
  46     timeconvert,
  47     unescapeHTML,
  48     unified_strdate,
  49     unsmuggle_url,
  50     uppercase_escape,
  51     url_basename,
  52     urlencode_postdata,
  53     version_tuple,
  54     xpath_with_ns,
  55     render_table,
  56     match_str,
  57 )
  58
  59
  60 class TestUtil(unittest.TestCase):
  61     def test_timeconvert(self):
  62         self.assertTrue(timeconvert('') is None)
  63         self.assertTrue(timeconvert('bougrg') is None)
  64
  65     def test_sanitize_filename(self):
  66         self.assertEqual(sanitize_filename('abc'), 'abc')
  67         self.assertEqual(sanitize_filename('abc_d-e'), 'abc_d-e')
  68
  69         self.assertEqual(sanitize_filename('123'), '123')
  70
  71         self.assertEqual('abc_de', sanitize_filename('abc/de'))
  72         self.assertFalse('/' in sanitize_filename('abc/de///'))
  73
  74         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de'))
  75         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|'))
  76         self.assertEqual('yes no', sanitize_filename('yes? no'))
  77         self.assertEqual('this - that', sanitize_filename('this: that'))
  78
  79         self.assertEqual(sanitize_filename('AT&T'), 'AT&T')
  80         aumlaut = 'ä'
  81         self.assertEqual(sanitize_filename(aumlaut), aumlaut)
  82         tests = '\u043a\u0438\u0440\u0438\u043b\u043b\u0438\u0446\u0430'
  83         self.assertEqual(sanitize_filename(tests), tests)
  84
  85         self.assertEqual(
  86             sanitize_filename('New World record at 0:12:34'),
  87             'New World record at 0_12_34')
  88
  89         forbidden = '"\0\\/'
  90         for fc in forbidden:
  91             for fbc in forbidden:
  92                 self.assertTrue(fbc not in sanitize_filename(fc))
  93
  94     def test_sanitize_filename_restricted(self):
  95         self.assertEqual(sanitize_filename('abc', restricted=True), 'abc')
  96         self.assertEqual(sanitize_filename('abc_d-e', restricted=True), 'abc_d-e')
  97
  98         self.assertEqual(sanitize_filename('123', restricted=True), '123')
  99
 100         self.assertEqual('abc_de', sanitize_filename('abc/de', restricted=True))
 101         self.assertFalse('/' in sanitize_filename('abc/de///', restricted=True))
 102
 103         self.assertEqual('abc_de', sanitize_filename('abc/<>\\*|de', restricted=True))
 104         self.assertEqual('xxx', sanitize_filename('xxx/<>\\*|', restricted=True))
 105         self.assertEqual('yes_no', sanitize_filename('yes? no', restricted=True))
 106         self.assertEqual('this_-_that', sanitize_filename('this: that', restricted=True))
 107
 108         tests = 'a\xe4b\u4e2d\u56fd\u7684c'
 109         self.assertEqual(sanitize_filename(tests, restricted=True), 'a_b_c')
 110         self.assertTrue(sanitize_filename('\xf6', restricted=True) != '')  # No empty filename
 111
 112         forbidden = '"\0\\/&!: \'\t\n()[]{}$;`^,#'
 113         for fc in forbidden:
 114             for fbc in forbidden:
 115                 self.assertTrue(fbc not in sanitize_filename(fc, restricted=True))
 116
 117         # Handle a common case more neatly
 118         self.assertEqual(sanitize_filename('\u5927\u58f0\u5e26 - Song', restricted=True), 'Song')
 119         self.assertEqual(sanitize_filename('\u603b\u7edf: Speech', restricted=True), 'Speech')
 120         # .. but make sure the file name is never empty
 121         self.assertTrue(sanitize_filename('-', restricted=True) != '')
 122         self.assertTrue(sanitize_filename(':', restricted=True) != '')
 123
 124     def test_sanitize_ids(self):
 125         self.assertEqual(sanitize_filename('_n_cd26wFpw', is_id=True), '_n_cd26wFpw')
 126         self.assertEqual(sanitize_filename('_BD_eEpuzXw', is_id=True), '_BD_eEpuzXw')
 127         self.assertEqual(sanitize_filename('N0Y__7-UOdI', is_id=True), 'N0Y__7-UOdI')
 128
 129     def test_ordered_set(self):
 130         self.assertEqual(orderedSet([1, 1, 2, 3, 4, 4, 5, 6, 7, 3, 5]), [1, 2, 3, 4, 5, 6, 7])
 131         self.assertEqual(orderedSet([]), [])
 132         self.assertEqual(orderedSet([1]), [1])
 133         # keep the list ordered
 134         self.assertEqual(orderedSet([135, 1, 1, 1]), [135, 1])
 135
 136     def test_unescape_html(self):
 137         self.assertEqual(unescapeHTML('%20;'), '%20;')
 138         self.assertEqual(
 139             unescapeHTML('&eacute;'), 'é')
 140
 141     def test_daterange(self):
 142         _20century = DateRange("19000101", "20000101")
 143         self.assertFalse("17890714" in _20century)
 144         _ac = DateRange("00010101")
 145         self.assertTrue("19690721" in _ac)
 146         _firstmilenium = DateRange(end="10000101")
 147         self.assertTrue("07110427" in _firstmilenium)
 148
 149     def test_unified_dates(self):
 150         self.assertEqual(unified_strdate('December 21, 2010'), '20101221')
 151         self.assertEqual(unified_strdate('8/7/2009'), '20090708')
 152         self.assertEqual(unified_strdate('Dec 14, 2012'), '20121214')
 153         self.assertEqual(unified_strdate('2012/10/11 01:56:38 +0000'), '20121011')
 154         self.assertEqual(unified_strdate('1968 12 10'), '19681210')
 155         self.assertEqual(unified_strdate('1968-12-10'), '19681210')
 156         self.assertEqual(unified_strdate('28/01/2014 21:00:00 +0100'), '20140128')
 157         self.assertEqual(
 158             unified_strdate('11/26/2014 11:30:00 AM PST', day_first=False),
 159             '20141126')
 160         self.assertEqual(
 161             unified_strdate('2/2/2015 6:47:40 PM', day_first=False),
 162             '20150202')
 163
 164     def test_find_xpath_attr(self):
 165         testxml = '''<root>
 166             <node/>
 167             <node x="a"/>
 168             <node x="a" y="c" />
 169             <node x="b" y="d" />
 170         </root>'''
 171         doc = xml.etree.ElementTree.fromstring(testxml)
 172
 173         self.assertEqual(find_xpath_attr(doc, './/fourohfour', 'n', 'v'), None)
 174         self.assertEqual(find_xpath_attr(doc, './/node', 'x', 'a'), doc[1])
 175         self.assertEqual(find_xpath_attr(doc, './/node', 'y', 'c'), doc[2])
 176
 177     def test_xpath_with_ns(self):
 178         testxml = '''<root xmlns:media="http://example.com/">
 179             <media:song>
 180                 <media:author>The Author</media:author>
 181                 <url>http://server.com/download.mp3</url>
 182             </media:song>
 183         </root>'''
 184         doc = xml.etree.ElementTree.fromstring(testxml)
 185         find = lambda p: doc.find(xpath_with_ns(p, {'media': 'http://example.com/'}))
 186         self.assertTrue(find('media:song') is not None)
 187         self.assertEqual(find('media:song/media:author').text, 'The Author')
 188         self.assertEqual(find('media:song/url').text, 'http://server.com/download.mp3')
 189
 190     def test_smuggle_url(self):
 191         data = {"ö": "ö", "abc": [3]}
 192         url = 'https://foo.bar/baz?x=y#a'
 193         smug_url = smuggle_url(url, data)
 194         unsmug_url, unsmug_data = unsmuggle_url(smug_url)
 195         self.assertEqual(url, unsmug_url)
 196         self.assertEqual(data, unsmug_data)
 197
 198         res_url, res_data = unsmuggle_url(url)
 199         self.assertEqual(res_url, url)
 200         self.assertEqual(res_data, None)
 201
 202     def test_shell_quote(self):
 203         args = ['ffmpeg', '-i', encodeFilename('ñ€ß\'.mp4')]
 204         self.assertEqual(shell_quote(args), """ffmpeg -i 'ñ€ß'"'"'.mp4'""")
 205
 206     def test_str_to_int(self):
 207         self.assertEqual(str_to_int('123,456'), 123456)
 208         self.assertEqual(str_to_int('123.456'), 123456)
 209
 210     def test_url_basename(self):
 211         self.assertEqual(url_basename('http://foo.de/'), '')
 212         self.assertEqual(url_basename('http://foo.de/bar/baz'), 'baz')
 213         self.assertEqual(url_basename('http://foo.de/bar/baz?x=y'), 'baz')
 214         self.assertEqual(url_basename('http://foo.de/bar/baz#x=y'), 'baz')
 215         self.assertEqual(url_basename('http://foo.de/bar/baz/'), 'baz')
 216         self.assertEqual(
 217             url_basename('http://media.w3.org/2010/05/sintel/trailer.mp4'),
 218             'trailer.mp4')
 219
 220     def test_parse_duration(self):
 221         self.assertEqual(parse_duration(None), None)
 222         self.assertEqual(parse_duration(False), None)
 223         self.assertEqual(parse_duration('invalid'), None)
 224         self.assertEqual(parse_duration('1'), 1)
 225         self.assertEqual(parse_duration('1337:12'), 80232)
 226         self.assertEqual(parse_duration('9:12:43'), 33163)
 227         self.assertEqual(parse_duration('12:00'), 720)
 228         self.assertEqual(parse_duration('00:01:01'), 61)
 229         self.assertEqual(parse_duration('x:y'), None)
 230         self.assertEqual(parse_duration('3h11m53s'), 11513)
 231         self.assertEqual(parse_duration('3h 11m 53s'), 11513)
 232         self.assertEqual(parse_duration('3 hours 11 minutes 53 seconds'), 11513)
 233         self.assertEqual(parse_duration('3 hours 11 mins 53 secs'), 11513)
 234         self.assertEqual(parse_duration('62m45s'), 3765)
 235         self.assertEqual(parse_duration('6m59s'), 419)
 236         self.assertEqual(parse_duration('49s'), 49)
 237         self.assertEqual(parse_duration('0h0m0s'), 0)
 238         self.assertEqual(parse_duration('0m0s'), 0)
 239         self.assertEqual(parse_duration('0s'), 0)
 240         self.assertEqual(parse_duration('01:02:03.05'), 3723.05)
 241         self.assertEqual(parse_duration('T30M38S'), 1838)
 242         self.assertEqual(parse_duration('5 s'), 5)
 243         self.assertEqual(parse_duration('3 min'), 180)
 244         self.assertEqual(parse_duration('2.5 hours'), 9000)
 245         self.assertEqual(parse_duration('02:03:04'), 7384)
 246         self.assertEqual(parse_duration('01:02:03:04'), 93784)
 247
 248     def test_fix_xml_ampersands(self):
 249         self.assertEqual(
 250             fix_xml_ampersands('"&x=y&z=a'), '"&amp;x=y&amp;z=a')
 251         self.assertEqual(
 252             fix_xml_ampersands('"&amp;x=y&wrong;&z=a'),
 253             '"&amp;x=y&amp;wrong;&amp;z=a')
 254         self.assertEqual(
 255             fix_xml_ampersands('&amp;&apos;&gt;&lt;&quot;'),
 256             '&amp;&apos;&gt;&lt;&quot;')
 257         self.assertEqual(
 258             fix_xml_ampersands('&#1234;&#x1abC;'), '&#1234;&#x1abC;')
 259         self.assertEqual(fix_xml_ampersands('&#&#'), '&amp;#&amp;#')
 260
 261     def test_paged_list(self):
 262         def testPL(size, pagesize, sliceargs, expected):
 263             def get_page(pagenum):
 264                 firstid = pagenum * pagesize
 265                 upto = min(size, pagenum * pagesize + pagesize)
 266                 for i in range(firstid, upto):
 267                     yield i
 268
 269             pl = OnDemandPagedList(get_page, pagesize)
 270             got = pl.getslice(*sliceargs)
 271             self.assertEqual(got, expected)
 272
 273             iapl = InAdvancePagedList(get_page, size // pagesize + 1, pagesize)
 274             got = iapl.getslice(*sliceargs)
 275             self.assertEqual(got, expected)
 276
 277         testPL(5, 2, (), [0, 1, 2, 3, 4])
 278         testPL(5, 2, (1,), [1, 2, 3, 4])
 279         testPL(5, 2, (2,), [2, 3, 4])
 280         testPL(5, 2, (4,), [4])
 281         testPL(5, 2, (0, 3), [0, 1, 2])
 282         testPL(5, 2, (1, 4), [1, 2, 3])
 283         testPL(5, 2, (2, 99), [2, 3, 4])
 284         testPL(5, 2, (20, 99), [])
 285
 286     def test_struct_unpack(self):
 287         self.assertEqual(struct_unpack('!B', b'\x00'), (0,))
 288
 289     def test_read_batch_urls(self):
 290         f = io.StringIO('''\xef\xbb\xbf foo
 291             bar\r
 292             baz
 293             # More after this line\r
 294             ; or after this
 295             bam''')
 296         self.assertEqual(read_batch_urls(f), ['foo', 'bar', 'baz', 'bam'])
 297
 298     def test_urlencode_postdata(self):
 299         data = urlencode_postdata({'username': 'foo@bar.com', 'password': '1234'})
 300         self.assertTrue(isinstance(data, bytes))
 301
 302     def test_parse_iso8601(self):
 303         self.assertEqual(parse_iso8601('2014-03-23T23:04:26+0100'), 1395612266)
 304         self.assertEqual(parse_iso8601('2014-03-23T22:04:26+0000'), 1395612266)
 305         self.assertEqual(parse_iso8601('2014-03-23T22:04:26Z'), 1395612266)
 306         self.assertEqual(parse_iso8601('2014-03-23T22:04:26.1234Z'), 1395612266)
 307
 308     def test_strip_jsonp(self):
 309         stripped = strip_jsonp('cb ([ {"id":"532cb",\n\n\n"x":\n3}\n]\n);')
 310         d = json.loads(stripped)
 311         self.assertEqual(d, [{"id": "532cb", "x": 3}])
 312
 313         stripped = strip_jsonp('parseMetadata({"STATUS":"OK"})\n\n\n//epc')
 314         d = json.loads(stripped)
 315         self.assertEqual(d, {'STATUS': 'OK'})
 316
 317     def test_uppercase_escape(self):
 318         self.assertEqual(uppercase_escape('aä'), 'aä')
 319         self.assertEqual(uppercase_escape('\\U0001d550'), '𝕐')
 320
 321     def test_limit_length(self):
 322         self.assertEqual(limit_length(None, 12), None)
 323         self.assertEqual(limit_length('foo', 12), 'foo')
 324         self.assertTrue(
 325             limit_length('foo bar baz asd', 12).startswith('foo bar'))
 326         self.assertTrue('...' in limit_length('foo bar baz asd', 12))
 327
 328     def test_escape_rfc3986(self):
 329         reserved = "!*'();:@&=+$,/?#[]"
 330         unreserved = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~'
 331         self.assertEqual(escape_rfc3986(reserved), reserved)
 332         self.assertEqual(escape_rfc3986(unreserved), unreserved)
 333         self.assertEqual(escape_rfc3986('тест'), '%D1%82%D0%B5%D1%81%D1%82')
 334         self.assertEqual(escape_rfc3986('%D1%82%D0%B5%D1%81%D1%82'), '%D1%82%D0%B5%D1%81%D1%82')
 335         self.assertEqual(escape_rfc3986('foo bar'), 'foo%20bar')
 336         self.assertEqual(escape_rfc3986('foo%20bar'), 'foo%20bar')
 337
 338     def test_escape_url(self):
 339         self.assertEqual(
 340             escape_url('http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavré_FD.mp4'),
 341             'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4'
 342         )
 343         self.assertEqual(
 344             escape_url('http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erklärt/Das-Erste/Video?documentId=22673108&bcastId=5290'),
 345             'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290'
 346         )
 347         self.assertEqual(
 348             escape_url('http://тест.рф/фрагмент'),
 349             'http://тест.рф/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82'
 350         )
 351         self.assertEqual(
 352             escape_url('http://тест.рф/абв?абв=абв#абв'),
 353             'http://тест.рф/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2'
 354         )
 355         self.assertEqual(escape_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 356
 357     def test_js_to_json_realworld(self):
 358         inp = '''{
 359             'clip':{'provider':'pseudo'}
 360         }'''
 361         self.assertEqual(js_to_json(inp), '''{
 362             "clip":{"provider":"pseudo"}
 363         }''')
 364         json.loads(js_to_json(inp))
 365
 366         inp = '''{
 367             'playlist':[{'controls':{'all':null}}]
 368         }'''
 369         self.assertEqual(js_to_json(inp), '''{
 370             "playlist":[{"controls":{"all":null}}]
 371         }''')
 372
 373         inp = '"SAND Number: SAND 2013-7800P\\nPresenter: Tom Russo\\nHabanero Software Training - Xyce Software\\nXyce, Sandia\\u0027s"'
 374         json_code = js_to_json(inp)
 375         self.assertEqual(json.loads(json_code), json.loads(inp))
 376
 377     def test_js_to_json_edgecases(self):
 378         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
 379         self.assertEqual(json.loads(on), {"abc_def": "1'\\2\\'3\"4"})
 380
 381         on = js_to_json('{"abc": true}')
 382         self.assertEqual(json.loads(on), {'abc': True})
 383
 384         # Ignore JavaScript code as well
 385         on = js_to_json('''{
 386             "x": 1,
 387             y: "a",
 388             z: some.code
 389         }''')
 390         d = json.loads(on)
 391         self.assertEqual(d['x'], 1)
 392         self.assertEqual(d['y'], 'a')
 393
 394     def test_clean_html(self):
 395         self.assertEqual(clean_html('a:\nb'), 'a: b')
 396         self.assertEqual(clean_html('a:\n   "b"'), 'a:    "b"')
 397
 398     def test_intlist_to_bytes(self):
 399         self.assertEqual(
 400             intlist_to_bytes([0, 1, 127, 128, 255]),
 401             b'\x00\x01\x7f\x80\xff')
 402
 403     def test_args_to_str(self):
 404         self.assertEqual(
 405             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
 406             'foo ba/r -baz \'2 be\' \'\''
 407         )
 408
 409     def test_parse_filesize(self):
 410         self.assertEqual(parse_filesize(None), None)
 411         self.assertEqual(parse_filesize(''), None)
 412         self.assertEqual(parse_filesize('91 B'), 91)
 413         self.assertEqual(parse_filesize('foobar'), None)
 414         self.assertEqual(parse_filesize('2 MiB'), 2097152)
 415         self.assertEqual(parse_filesize('5 GB'), 5000000000)
 416         self.assertEqual(parse_filesize('1.2Tb'), 1200000000000)
 417         self.assertEqual(parse_filesize('1,24 KB'), 1240)
 418
 419     def test_version_tuple(self):
 420         self.assertEqual(version_tuple('1'), (1,))
 421         self.assertEqual(version_tuple('10.23.344'), (10, 23, 344))
 422         self.assertEqual(version_tuple('10.1-6'), (10, 1, 6))  # avconv style
 423
 424     def test_detect_exe_version(self):
 425         self.assertEqual(detect_exe_version('''ffmpeg version 1.2.1
 426 built on May 27 2013 08:37:26 with gcc 4.7 (Debian 4.7.3-4)
 427 configuration: --prefix=/usr --extra-'''), '1.2.1')
 428         self.assertEqual(detect_exe_version('''ffmpeg version N-63176-g1fb4685
 429 built on May 15 2014 22:09:06 with gcc 4.8.2 (GCC)'''), 'N-63176-g1fb4685')
 430         self.assertEqual(detect_exe_version('''X server found. dri2 connection failed!
 431 Trying to open render node...
 432 Success at /dev/dri/renderD128.
 433 ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
 434
 435     def test_age_restricted(self):
 436         self.assertFalse(age_restricted(None, 10))  # unrestricted content
 437         self.assertFalse(age_restricted(1, None))  # unrestricted policy
 438         self.assertFalse(age_restricted(8, 10))
 439         self.assertTrue(age_restricted(18, 14))
 440         self.assertFalse(age_restricted(18, 18))
 441
 442     def test_is_html(self):
 443         self.assertFalse(is_html(b'\x49\x44\x43<html'))
 444         self.assertTrue(is_html(b'<!DOCTYPE foo>\xaaa'))
 445         self.assertTrue(is_html(  # UTF-8 with BOM
 446             b'\xef\xbb\xbf<!DOCTYPE foo>\xaaa'))
 447         self.assertTrue(is_html(  # UTF-16-LE
 448             b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00'
 449         ))
 450         self.assertTrue(is_html(  # UTF-16-BE
 451             b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4'
 452         ))
 453         self.assertTrue(is_html(  # UTF-32-BE
 454             b'\x00\x00\xFE\xFF\x00\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4'))
 455         self.assertTrue(is_html(  # UTF-32-LE
 456             b'\xFF\xFE\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4\x00\x00\x00'))
 457
 458     def test_render_table(self):
 459         self.assertEqual(
 460             render_table(
 461                 ['a', 'bcd'],
 462                 [[123, 4], [9999, 51]]),
 463             'a    bcd\n'
 464             '123  4\n'
 465             '9999 51')
 466
 467     def test_match_str(self):
 468         self.assertRaises(ValueError, match_str, 'xy>foobar', {})
 469         self.assertFalse(match_str('xy', {'x': 1200}))
 470         self.assertTrue(match_str('!xy', {'x': 1200}))
 471         self.assertTrue(match_str('x', {'x': 1200}))
 472         self.assertFalse(match_str('!x', {'x': 1200}))
 473         self.assertTrue(match_str('x', {'x': 0}))
 474         self.assertFalse(match_str('x>0', {'x': 0}))
 475         self.assertFalse(match_str('x>0', {}))
 476         self.assertTrue(match_str('x>?0', {}))
 477         self.assertTrue(match_str('x>1K', {'x': 1200}))
 478         self.assertFalse(match_str('x>2K', {'x': 1200}))
 479         self.assertTrue(match_str('x>=1200 & x < 1300', {'x': 1200}))
 480         self.assertFalse(match_str('x>=1100 & x < 1200', {'x': 1200}))
 481         self.assertFalse(match_str('y=a212', {'y': 'foobar42'}))
 482         self.assertTrue(match_str('y=foobar42', {'y': 'foobar42'}))
 483         self.assertFalse(match_str('y!=foobar42', {'y': 'foobar42'}))
 484         self.assertTrue(match_str('y!=foobar2', {'y': 'foobar42'}))
 485         self.assertFalse(match_str(
 486             'like_count > 100 & dislike_count <? 50 & description',
 487             {'like_count': 90, 'description': 'foo'}))
 488         self.assertTrue(match_str(
 489             'like_count > 100 & dislike_count <? 50 & description',
 490             {'like_count': 190, 'description': 'foo'}))
 491         self.assertFalse(match_str(
 492             'like_count > 100 & dislike_count <? 50 & description',
 493             {'like_count': 190, 'dislike_count': 60, 'description': 'foo'}))
 494         self.assertFalse(match_str(
 495             'like_count > 100 & dislike_count <? 50 & description',
 496             {'like_count': 190, 'dislike_count': 10}))
 497
 498
 499 if __name__ == '__main__':
 500     unittest.main()