summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_wsgiref.py
blob: 41076644295ae51eee161d1dd2a9bb69c308b9d2 (plain)
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
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
from __future__ import nested_scopes    # Backward compat for 2.1
from unittest import TestCase
from wsgiref.util import setup_testing_defaults
from wsgiref.headers import Headers
from wsgiref.handlers import BaseHandler, BaseCGIHandler
from wsgiref import util
from wsgiref.validate import validator
from wsgiref.simple_server import WSGIServer, WSGIRequestHandler, demo_app
from wsgiref.simple_server import make_server
from io import StringIO, BytesIO, BufferedReader
from socketserver import BaseServer
from platform import python_implementation

import os
import re
import sys

from test import support

class MockServer(WSGIServer):
    """Non-socket HTTP server"""

    def __init__(self, server_address, RequestHandlerClass):
        BaseServer.__init__(self, server_address, RequestHandlerClass)
        self.server_bind()

    def server_bind(self):
        host, port = self.server_address
        self.server_name = host
        self.server_port = port
        self.setup_environ()


class MockHandler(WSGIRequestHandler):
    """Non-socket HTTP handler"""
    def setup(self):
        self.connection = self.request
        self.rfile, self.wfile = self.connection

    def finish(self):
        pass


def hello_app(environ,start_response):
    start_response("200 OK", [
        ('Content-Type','text/plain'),
        ('Date','Mon, 05 Jun 2006 18:49:54 GMT')
    ])
    return [b"Hello, world!"]

def run_amock(app=hello_app, data=b"GET / HTTP/1.0\n\n"):
    server = make_server("", 80, app, MockServer, MockHandler)
    inp = BufferedReader(BytesIO(data))
    out = BytesIO()
    olderr = sys.stderr
    err = sys.stderr = StringIO()

    try:
        server.finish_request((inp, out), ("127.0.0.1",8888))
    finally:
        sys.stderr = olderr

    return out.getvalue(), err.getvalue()

def compare_generic_iter(make_it,match):
    """Utility to compare a generic 2.1/2.2+ iterator with an iterable

    If running under Python 2.2+, this tests the iterator using iter()/next(),
    as well as __getitem__.  'make_it' must be a function returning a fresh
    iterator to be tested (since this may test the iterator twice)."""

    it = make_it()
    n = 0
    for item in match:
        if not it[n]==item: raise AssertionError
        n+=1
    try:
        it[n]
    except IndexError:
        pass
    else:
        raise AssertionError("Too many items from __getitem__",it)

    try:
        iter, StopIteration
    except NameError:
        pass
    else:
        # Only test iter mode under 2.2+
        it = make_it()
        if not iter(it) is it: raise AssertionError
        for item in match:
            if not next(it) == item: raise AssertionError
        try:
            next(it)
        except StopIteration:
            pass
        else:
            raise AssertionError("Too many items from .__next__()", it)


class IntegrationTests(TestCase):

    def check_hello(self, out, has_length=True):
        pyver = (python_implementation() + "/" +
                sys.version.split()[0])
        self.assertEqual(out,
            ("HTTP/1.0 200 OK\r\n"
            "Server: WSGIServer/0.2 " + pyver +"\r\n"
            "Content-Type: text/plain\r\n"
            "Date: Mon, 05 Jun 2006 18:49:54 GMT\r\n" +
            (has_length and  "Content-Length: 13\r\n" or "") +
            "\r\n"
            "Hello, world!").encode("iso-8859-1")
        )

    def test_plain_hello(self):
        out, err = run_amock()
        self.check_hello(out)

    def test_validated_hello(self):
        out, err = run_amock(validator(hello_app))
        # the middleware doesn't support len(), so content-length isn't there
        self.check_hello(out, has_length=False)

    def test_simple_validation_error(self):
        def bad_app(environ,start_response):
            start_response("200 OK", ('Content-Type','text/plain'))
            return ["Hello, world!"]
        out, err = run_amock(validator(bad_app))
        self.assertTrue(out.endswith(
            b"A server error occurred.  Please contact the administrator."
        ))
        self.assertEqual(
            err.splitlines()[-2],
            "AssertionError: Headers (('Content-Type', 'text/plain')) must"
            " be of type list: <class 'tuple'>"
        )

    def test_wsgi_input(self):
        def bad_app(e,s):
            e["wsgi.input"].read()
            s("200 OK", [("Content-Type", "text/plain; charset=utf-8")])
            return [b"data"]
        out, err = run_amock(validator(bad_app))
        self.assertTrue(out.endswith(
            b"A server error occurred.  Please contact the administrator."
        ))
        self.assertEqual(
            err.splitlines()[-2], "AssertionError"
        )

    def test_bytes_validation(self):
        def app(e, s):
            s("200 OK", [
                ("Content-Type", "text/plain; charset=utf-8"),
                ("Date", "Wed, 24 Dec 2008 13:29:32 GMT"),
                ])
            return [b"data"]
        out, err = run_amock(validator(app))
        self.assertTrue(err.endswith('"GET / HTTP/1.0" 200 4\n'))
        ver = sys.version.split()[0].encode('ascii')
        py  = python_implementation().encode('ascii')
        pyver = py + b"/" + ver
        self.assertEqual(
                b"HTTP/1.0 200 OK\r\n"
                b"Server: WSGIServer/0.2 "+ pyver + b"\r\n"
                b"Content-Type: text/plain; charset=utf-8\r\n"
                b"Date: Wed, 24 Dec 2008 13:29:32 GMT\r\n"
                b"\r\n"
                b"data",
                out)


class UtilityTests(TestCase):

    def checkShift(self,sn_in,pi_in,part,sn_out,pi_out):
        env = {'SCRIPT_NAME':sn_in,'PATH_INFO':pi_in}
        util.setup_testing_defaults(env)
        self.assertEqual(util.shift_path_info(env),part)
        self.assertEqual(env['PATH_INFO'],pi_out)
        self.assertEqual(env['SCRIPT_NAME'],sn_out)
        return env

    def checkDefault(self, key, value, alt=None):
        # Check defaulting when empty
        env = {}
        util.setup_testing_defaults(env)
        if isinstance(value, StringIO):
            self.assertIsInstance(env[key], StringIO)
        elif isinstance(value,BytesIO):
            self.assertIsInstance(env[key],BytesIO)
        else:
            self.assertEqual(env[key], value)

        # Check existing value
        env = {key:alt}
        util.setup_testing_defaults(env)
        self.assertTrue(env[key] is alt)

    def checkCrossDefault(self,key,value,**kw):
        util.setup_testing_defaults(kw)
        self.assertEqual(kw[key],value)

    def checkAppURI(self,uri,**kw):
        util.setup_testing_defaults(kw)
        self.assertEqual(util.application_uri(kw),uri)

    def checkReqURI(self,uri,query=1,**kw):
        util.setup_testing_defaults(kw)
        self.assertEqual(util.request_uri(kw,query),uri)

    def checkFW(self,text,size,match):

        def make_it(text=text,size=size):
            return util.FileWrapper(StringIO(text),size)

        compare_generic_iter(make_it,match)

        it = make_it()
        self.assertFalse(it.filelike.closed)

        for item in it:
            pass

        self.assertFalse(it.filelike.closed)

        it.close()
        self.assertTrue(it.filelike.closed)

    def testSimpleShifts(self):
        self.checkShift('','/', '', '/', '')
        self.checkShift('','/x', 'x', '/x', '')
        self.checkShift('/','', None, '/', '')
        self.checkShift('/a','/x/y', 'x', '/a/x', '/y')
        self.checkShift('/a','/x/',  'x', '/a/x', '/')

    def testNormalizedShifts(self):
        self.checkShift('/a/b', '/../y', '..', '/a', '/y')
        self.checkShift('', '/../y', '..', '', '/y')
        self.checkShift('/a/b', '//y', 'y', '/a/b/y', '')
        self.checkShift('/a/b', '//y/', 'y', '/a/b/y', '/')
        self.checkShift('/a/b', '/./y', 'y', '/a/b/y', '')
        self.checkShift('/a/b', '/./y/', 'y', '/a/b/y', '/')
        self.checkShift('/a/b', '///./..//y/.//', '..', '/a', '/y/')
        self.checkShift('/a/b', '///', '', '/a/b/', '')
        self.checkShift('/a/b', '/.//', '', '/a/b/', '')
        self.checkShift('/a/b', '/x//', 'x', '/a/b/x', '/')
        self.checkShift('/a/b', '/.', None, '/a/b', '')

    def testDefaults(self):
        for key, value in [
            ('SERVER_NAME','127.0.0.1'),
            ('SERVER_PORT', '80'),
            ('SERVER_PROTOCOL','HTTP/1.0'),
            ('HTTP_HOST','127.0.0.1'),
            ('REQUEST_METHOD','GET'),
            ('SCRIPT_NAME',''),
            ('PATH_INFO','/'),
            ('wsgi.version', (1,0)),
            ('wsgi.run_once', 0),
            ('wsgi.multithread', 0),
            ('wsgi.multiprocess', 0),
            ('wsgi.input', BytesIO()),
            ('wsgi.errors', StringIO()),
            ('wsgi.url_scheme','http'),
        ]:
            self.checkDefault(key,value)

    def testCrossDefaults(self):
        self.checkCrossDefault('HTTP_HOST',"foo.bar",SERVER_NAME="foo.bar")
        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="on")
        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="1")
        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="yes")
        self.checkCrossDefault('wsgi.url_scheme',"http",HTTPS="foo")
        self.checkCrossDefault('SERVER_PORT',"80",HTTPS="foo")
        self.checkCrossDefault('SERVER_PORT',"443",HTTPS="on")

    def testGuessScheme(self):
        self.assertEqual(util.guess_scheme({}), "http")
        self.assertEqual(util.guess_scheme({'HTTPS':"foo"}), "http")
        self.assertEqual(util.guess_scheme({'HTTPS':"on"}), "https")
        self.assertEqual(util.guess_scheme({'HTTPS':"yes"}), "https")
        self.assertEqual(util.guess_scheme({'HTTPS':"1"}), "https")

    def testAppURIs(self):
        self.checkAppURI("http://127.0.0.1/")
        self.checkAppURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
        self.checkAppURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
        self.checkAppURI("http://spam.example.com:2071/",
            HTTP_HOST="spam.example.com:2071", SERVER_PORT="2071")
        self.checkAppURI("http://spam.example.com/",
            SERVER_NAME="spam.example.com")
        self.checkAppURI("http://127.0.0.1/",
            HTTP_HOST="127.0.0.1", SERVER_NAME="spam.example.com")
        self.checkAppURI("https://127.0.0.1/", HTTPS="on")
        self.checkAppURI("http://127.0.0.1:8000/", SERVER_PORT="8000",
            HTTP_HOST=None)

    def testReqURIs(self):
        self.checkReqURI("http://127.0.0.1/")
        self.checkReqURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
        self.checkReqURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
        self.checkReqURI("http://127.0.0.1/spammity/spam",
            SCRIPT_NAME="/spammity", PATH_INFO="/spam")
        self.checkReqURI("http://127.0.0.1/spammity/sp%E4m",
            SCRIPT_NAME="/spammity", PATH_INFO="/sp\xe4m")
        self.checkReqURI("http://127.0.0.1/spammity/spam;ham",
            SCRIPT_NAME="/spammity", PATH_INFO="/spam;ham")
        self.checkReqURI("http://127.0.0.1/spammity/spam;cookie=1234,5678",
            SCRIPT_NAME="/spammity", PATH_INFO="/spam;cookie=1234,5678")
        self.checkReqURI("http://127.0.0.1/spammity/spam?say=ni",
            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")
        self.checkReqURI("http://127.0.0.1/spammity/spam?s%E4y=ni",
            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="s%E4y=ni")
        self.checkReqURI("http://127.0.0.1/spammity/spam", 0,
            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")

    def testFileWrapper(self):
        self.checkFW("xyz"*50, 120, ["xyz"*40,"xyz"*10])

    def testHopByHop(self):
        for hop in (
            "Connection Keep-Alive Proxy-Authenticate Proxy-Authorization "
            "TE Trailers Transfer-Encoding Upgrade"
        ).split():
            for alt in hop, hop.title(), hop.upper(), hop.lower():
                self.assertTrue(util.is_hop_by_hop(alt))

        # Not comprehensive, just a few random header names
        for hop in (
            "Accept Cache-Control Date Pragma Trailer Via Warning"
        ).split():
            for alt in hop, hop.title(), hop.upper(), hop.lower():
                self.assertFalse(util.is_hop_by_hop(alt))

class HeaderTests(TestCase):

    def testMappingInterface(self):
        test = [('x','y')]
        self.assertEqual(len(Headers([])),0)
        self.assertEqual(len(Headers(test[:])),1)
        self.assertEqual(Headers(test[:]).keys(), ['x'])
        self.assertEqual(Headers(test[:]).values(), ['y'])
        self.assertEqual(Headers(test[:]).items(), test)
        self.assertFalse(Headers(test).items() is test)  # must be copy!

        h=Headers([])
        del h['foo']   # should not raise an error

        h['Foo'] = 'bar'
        for m in h.__contains__, h.get, h.get_all, h.__getitem__:
            self.assertTrue(m('foo'))
            self.assertTrue(m('Foo'))
            self.assertTrue(m('FOO'))
            self.assertFalse(m('bar'))

        self.assertEqual(h['foo'],'bar')
        h['foo'] = 'baz'
        self.assertEqual(h['FOO'],'baz')
        self.assertEqual(h.get_all('foo'),['baz'])

        self.assertEqual(h.get("foo","whee"), "baz")
        self.assertEqual(h.get("zoo","whee"), "whee")
        self.assertEqual(h.setdefault("foo","whee"), "baz")
        self.assertEqual(h.setdefault("zoo","whee"), "whee")
        self.assertEqual(h["foo"],"baz")
        self.assertEqual(h["zoo"],"whee")

    def testRequireList(self):
        self.assertRaises(TypeError, Headers, "foo")


    def testExtras(self):
        h = Headers([])
        self.assertEqual(str(h),'\r\n')

        h.add_header('foo','bar',baz="spam")
        self.assertEqual(h['foo'], 'bar; baz="spam"')
        self.assertEqual(str(h),'foo: bar; baz="spam"\r\n\r\n')

        h.add_header('Foo','bar',cheese=None)
        self.assertEqual(h.get_all('foo'),
            ['bar; baz="spam"', 'bar; cheese'])

        self.assertEqual(str(h),
            'foo: bar; baz="spam"\r\n'
            'Foo: bar; cheese\r\n'
            '\r\n'
        )

class ErrorHandler(BaseCGIHandler):
    """Simple handler subclass for testing BaseHandler"""

    # BaseHandler records the OS environment at import time, but envvars
    # might have been changed later by other tests, which trips up
    # HandlerTests.testEnviron().
    os_environ = dict(os.environ.items())

    def __init__(self,**kw):
        setup_testing_defaults(kw)
        BaseCGIHandler.__init__(
            self, BytesIO(), BytesIO(), StringIO(), kw,
            multithread=True, multiprocess=True
        )

class TestHandler(ErrorHandler):
    """Simple handler subclass for testing BaseHandler, w/error passthru"""

    def handle_error(self):
        raise   # for testing, we want to see what's happening


class HandlerTests(TestCase):

    def checkEnvironAttrs(self, handler):
        env = handler.environ
        for attr in [
            'version','multithread','multiprocess','run_once','file_wrapper'
        ]:
            if attr=='file_wrapper' and handler.wsgi_file_wrapper is None:
                continue
            self.assertEqual(getattr(handler,'wsgi_'+attr),env['wsgi.'+attr])

    def checkOSEnviron(self,handler):
        empty = {}; setup_testing_defaults(empty)
        env = handler.environ
        from os import environ
        for k,v in environ.items():
            if k not in empty:
                self.assertEqual(env[k],v)
        for k,v in empty.items():
            self.assertIn(k, env)

    def testEnviron(self):
        h = TestHandler(X="Y")
        h.setup_environ()
        self.checkEnvironAttrs(h)
        self.checkOSEnviron(h)
        self.assertEqual(h.environ["X"],"Y")

    def testCGIEnviron(self):
        h = BaseCGIHandler(None,None,None,{})
        h.setup_environ()
        for key in 'wsgi.url_scheme', 'wsgi.input', 'wsgi.errors':
            self.assertIn(key, h.environ)

    def testScheme(self):
        h=TestHandler(HTTPS="on"); h.setup_environ()
        self.assertEqual(h.environ['wsgi.url_scheme'],'https')
        h=TestHandler(); h.setup_environ()
        self.assertEqual(h.environ['wsgi.url_scheme'],'http')

    def testAbstractMethods(self):
        h = BaseHandler()
        for name in [
            '_flush','get_stdin','get_stderr','add_cgi_vars'
        ]:
            self.assertRaises(NotImplementedError, getattr(h,name))
        self.assertRaises(NotImplementedError, h._write, "test")

    def testContentLength(self):
        # Demo one reason iteration is better than write()...  ;)

        def trivial_app1(e,s):
            s('200 OK',[])
            return [e['wsgi.url_scheme'].encode('iso-8859-1')]

        def trivial_app2(e,s):
            s('200 OK',[])(e['wsgi.url_scheme'].encode('iso-8859-1'))
            return []

        def trivial_app3(e,s):
            s('200 OK',[])
            return ['\u0442\u0435\u0441\u0442'.encode("utf-8")]

        def trivial_app4(e,s):
            # Simulate a response to a HEAD request
            s('200 OK',[('Content-Length', '12345')])
            return []

        h = TestHandler()
        h.run(trivial_app1)
        self.assertEqual(h.stdout.getvalue(),
            ("Status: 200 OK\r\n"
            "Content-Length: 4\r\n"
            "\r\n"
            "http").encode("iso-8859-1"))

        h = TestHandler()
        h.run(trivial_app2)
        self.assertEqual(h.stdout.getvalue(),
            ("Status: 200 OK\r\n"
            "\r\n"
            "http").encode("iso-8859-1"))

        h = TestHandler()
        h.run(trivial_app3)
        self.assertEqual(h.stdout.getvalue(),
            b'Status: 200 OK\r\n'
            b'Content-Length: 8\r\n'
            b'\r\n'
            b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82')

        h = TestHandler()
        h.run(trivial_app4)
        self.assertEqual(h.stdout.getvalue(),
            b'Status: 200 OK\r\n'
            b'Content-Length: 12345\r\n'
            b'\r\n')

    def testBasicErrorOutput(self):

        def non_error_app(e,s):
            s('200 OK',[])
            return []

        def error_app(e,s):
            raise AssertionError("This should be caught by handler")

        h = ErrorHandler()
        h.run(non_error_app)
        self.assertEqual(h.stdout.getvalue(),
            ("Status: 200 OK\r\n"
            "Content-Length: 0\r\n"
            "\r\n").encode("iso-8859-1"))
        self.assertEqual(h.stderr.getvalue(),"")

        h = ErrorHandler()
        h.run(error_app)
        self.assertEqual(h.stdout.getvalue(),
            ("Status: %s\r\n"
            "Content-Type: text/plain\r\n"
            "Content-Length: %d\r\n"
            "\r\n" % (h.error_status,len(h.error_body))).encode('iso-8859-1')
            + h.error_body)

        self.assertIn("AssertionError", h.stderr.getvalue())

    def testErrorAfterOutput(self):
        MSG = b"Some output has been sent"
        def error_app(e,s):
            s("200 OK",[])(MSG)
            raise AssertionError("This should be caught by handler")

        h = ErrorHandler()
        h.run(error_app)
        self.assertEqual(h.stdout.getvalue(),
            ("Status: 200 OK\r\n"
            "\r\n".encode("iso-8859-1")+MSG))
        self.assertIn("AssertionError", h.stderr.getvalue())

    def testHeaderFormats(self):

        def non_error_app(e,s):
            s('200 OK',[])
            return []

        stdpat = (
            r"HTTP/%s 200 OK\r\n"
            r"Date: \w{3}, [ 0123]\d \w{3} \d{4} \d\d:\d\d:\d\d GMT\r\n"
            r"%s" r"Content-Length: 0\r\n" r"\r\n"
        )
        shortpat = (
            "Status: 200 OK\r\n" "Content-Length: 0\r\n" "\r\n"
        ).encode("iso-8859-1")

        for ssw in "FooBar/1.0", None:
            sw = ssw and "Server: %s\r\n" % ssw or ""

            for version in "1.0", "1.1":
                for proto in "HTTP/0.9", "HTTP/1.0", "HTTP/1.1":

                    h = TestHandler(SERVER_PROTOCOL=proto)
                    h.origin_server = False
                    h.http_version = version
                    h.server_software = ssw
                    h.run(non_error_app)
                    self.assertEqual(shortpat,h.stdout.getvalue())

                    h = TestHandler(SERVER_PROTOCOL=proto)
                    h.origin_server = True
                    h.http_version = version
                    h.server_software = ssw
                    h.run(non_error_app)
                    if proto=="HTTP/0.9":
                        self.assertEqual(h.stdout.getvalue(),b"")
                    else:
                        self.assertTrue(
                            re.match((stdpat%(version,sw)).encode("iso-8859-1"),
                                h.stdout.getvalue()),
                            ((stdpat%(version,sw)).encode("iso-8859-1"),
                                h.stdout.getvalue())
                        )

    def testBytesData(self):
        def app(e, s):
            s("200 OK", [
                ("Content-Type", "text/plain; charset=utf-8"),
                ])
            return [b"data"]

        h = TestHandler()
        h.run(app)
        self.assertEqual(b"Status: 200 OK\r\n"
            b"Content-Type: text/plain; charset=utf-8\r\n"
            b"Content-Length: 4\r\n"
            b"\r\n"
            b"data",
            h.stdout.getvalue())

    def testCloseOnError(self):
        side_effects = {'close_called': False}
        MSG = b"Some output has been sent"
        def error_app(e,s):
            s("200 OK",[])(MSG)
            class CrashyIterable(object):
                def __iter__(self):
                    while True:
                        yield b'blah'
                        raise AssertionError("This should be caught by handler")
                def close(self):
                    side_effects['close_called'] = True
            return CrashyIterable()

        h = ErrorHandler()
        h.run(error_app)
        self.assertEqual(side_effects['close_called'], True)


def test_main():
    support.run_unittest(__name__)

if __name__ == "__main__":
    test_main()