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| 1 # Copyright (c) 2001-2007 Twisted Matrix Laboratories. | |
| 2 # See LICENSE for details. | |
| 3 | |
| 4 """ | |
| 5 Test code for policies. | |
| 6 """ | |
| 7 | |
| 8 from StringIO import StringIO | |
| 9 | |
| 10 from twisted.trial import unittest | |
| 11 from twisted.test.proto_helpers import StringTransportWithDisconnection | |
| 12 | |
| 13 from twisted.internet import protocol, reactor, address, defer, task | |
| 14 from twisted.protocols import policies | |
| 15 | |
| 16 | |
| 17 | |
| 18 class StringIOWithoutClosing(StringIO): | |
| 19 def close(self): pass | |
| 20 | |
| 21 | |
| 22 | |
| 23 class SimpleProtocol(protocol.Protocol): | |
| 24 | |
| 25 connected = disconnected = 0 | |
| 26 buffer = "" | |
| 27 | |
| 28 def __init__(self): | |
| 29 self.dConnected = defer.Deferred() | |
| 30 self.dDisconnected = defer.Deferred() | |
| 31 | |
| 32 def connectionMade(self): | |
| 33 self.connected = 1 | |
| 34 self.dConnected.callback('') | |
| 35 | |
| 36 def connectionLost(self, reason): | |
| 37 self.disconnected = 1 | |
| 38 self.dDisconnected.callback('') | |
| 39 | |
| 40 def dataReceived(self, data): | |
| 41 self.buffer += data | |
| 42 | |
| 43 | |
| 44 | |
| 45 class SillyFactory(protocol.ClientFactory): | |
| 46 | |
| 47 def __init__(self, p): | |
| 48 self.p = p | |
| 49 | |
| 50 def buildProtocol(self, addr): | |
| 51 return self.p | |
| 52 | |
| 53 | |
| 54 class EchoProtocol(protocol.Protocol): | |
| 55 paused = False | |
| 56 | |
| 57 def pauseProducing(self): | |
| 58 self.paused = True | |
| 59 | |
| 60 def resumeProducing(self): | |
| 61 self.paused = False | |
| 62 | |
| 63 def stopProducing(self): | |
| 64 pass | |
| 65 | |
| 66 def dataReceived(self, data): | |
| 67 self.transport.write(data) | |
| 68 | |
| 69 | |
| 70 | |
| 71 class Server(protocol.ServerFactory): | |
| 72 """ | |
| 73 A simple server factory using L{EchoProtocol}. | |
| 74 """ | |
| 75 protocol = EchoProtocol | |
| 76 | |
| 77 | |
| 78 | |
| 79 class TestableThrottlingFactory(policies.ThrottlingFactory): | |
| 80 """ | |
| 81 L{policies.ThrottlingFactory} using a L{task.Clock} for tests. | |
| 82 """ | |
| 83 | |
| 84 def __init__(self, clock, *args, **kwargs): | |
| 85 """ | |
| 86 @param clock: object providing a callLater method that can be used | |
| 87 for tests. | |
| 88 @type clock: C{task.Clock} or alike. | |
| 89 """ | |
| 90 policies.ThrottlingFactory.__init__(self, *args, **kwargs) | |
| 91 self.clock = clock | |
| 92 | |
| 93 | |
| 94 def callLater(self, period, func): | |
| 95 """ | |
| 96 Forward to the testable clock. | |
| 97 """ | |
| 98 return self.clock.callLater(period, func) | |
| 99 | |
| 100 | |
| 101 | |
| 102 class TestableTimeoutFactory(policies.TimeoutFactory): | |
| 103 """ | |
| 104 L{policies.TimeoutFactory} using a L{task.Clock} for tests. | |
| 105 """ | |
| 106 | |
| 107 def __init__(self, clock, *args, **kwargs): | |
| 108 """ | |
| 109 @param clock: object providing a callLater method that can be used | |
| 110 for tests. | |
| 111 @type clock: C{task.Clock} or alike. | |
| 112 """ | |
| 113 policies.TimeoutFactory.__init__(self, *args, **kwargs) | |
| 114 self.clock = clock | |
| 115 | |
| 116 | |
| 117 def callLater(self, period, func): | |
| 118 """ | |
| 119 Forward to the testable clock. | |
| 120 """ | |
| 121 return self.clock.callLater(period, func) | |
| 122 | |
| 123 | |
| 124 | |
| 125 class PausableStringTransport(StringTransportWithDisconnection): | |
| 126 """ | |
| 127 A string transport saving the current production state. | |
| 128 | |
| 129 @ivar paused: whether the production is paused or not. | |
| 130 @type paused: C{bool} | |
| 131 """ | |
| 132 paused = False | |
| 133 | |
| 134 def pauseProducing(self): | |
| 135 """ | |
| 136 Notification of production pause: set C{self.paused}. | |
| 137 """ | |
| 138 self.paused = True | |
| 139 | |
| 140 | |
| 141 def resumeProducing(self): | |
| 142 """ | |
| 143 Notification of production restart: unset C{self.paused}. | |
| 144 """ | |
| 145 self.paused = False | |
| 146 | |
| 147 | |
| 148 | |
| 149 class WrapperTestCase(unittest.TestCase): | |
| 150 def testProtocolFactoryAttribute(self): | |
| 151 """ | |
| 152 Make sure protocol.factory is the wrapped factory, not the wrapping | |
| 153 factory. | |
| 154 """ | |
| 155 f = Server() | |
| 156 wf = policies.WrappingFactory(f) | |
| 157 p = wf.buildProtocol(address.IPv4Address('TCP', '127.0.0.1', 35)) | |
| 158 self.assertIdentical(p.wrappedProtocol.factory, f) | |
| 159 | |
| 160 | |
| 161 | |
| 162 class WrappingFactory(policies.WrappingFactory): | |
| 163 protocol = lambda s, f, p: p | |
| 164 | |
| 165 def startFactory(self): | |
| 166 policies.WrappingFactory.startFactory(self) | |
| 167 self.deferred.callback(None) | |
| 168 | |
| 169 | |
| 170 | |
| 171 class ThrottlingTestCase(unittest.TestCase): | |
| 172 """ | |
| 173 Tests for L{policies.ThrottlingFactory}. | |
| 174 """ | |
| 175 | |
| 176 def test_limit(self): | |
| 177 """ | |
| 178 Full test using a custom server limiting number of connections. | |
| 179 """ | |
| 180 server = Server() | |
| 181 c1, c2, c3, c4 = [SimpleProtocol() for i in range(4)] | |
| 182 tServer = policies.ThrottlingFactory(server, 2) | |
| 183 wrapTServer = WrappingFactory(tServer) | |
| 184 wrapTServer.deferred = defer.Deferred() | |
| 185 | |
| 186 # Start listening | |
| 187 p = reactor.listenTCP(0, wrapTServer, interface="127.0.0.1") | |
| 188 n = p.getHost().port | |
| 189 | |
| 190 def _connect123(results): | |
| 191 reactor.connectTCP("127.0.0.1", n, SillyFactory(c1)) | |
| 192 c1.dConnected.addCallback( | |
| 193 lambda r: reactor.connectTCP("127.0.0.1", n, SillyFactory(c2))) | |
| 194 c2.dConnected.addCallback( | |
| 195 lambda r: reactor.connectTCP("127.0.0.1", n, SillyFactory(c3))) | |
| 196 return c3.dDisconnected | |
| 197 | |
| 198 def _check123(results): | |
| 199 self.assertEquals([c.connected for c in c1, c2, c3], [1, 1, 1]) | |
| 200 self.assertEquals([c.disconnected for c in c1, c2, c3], [0, 0, 1]) | |
| 201 self.assertEquals(len(tServer.protocols.keys()), 2) | |
| 202 return results | |
| 203 | |
| 204 def _lose1(results): | |
| 205 # disconnect one protocol and now another should be able to connect | |
| 206 c1.transport.loseConnection() | |
| 207 return c1.dDisconnected | |
| 208 | |
| 209 def _connect4(results): | |
| 210 reactor.connectTCP("127.0.0.1", n, SillyFactory(c4)) | |
| 211 return c4.dConnected | |
| 212 | |
| 213 def _check4(results): | |
| 214 self.assertEquals(c4.connected, 1) | |
| 215 self.assertEquals(c4.disconnected, 0) | |
| 216 return results | |
| 217 | |
| 218 def _cleanup(results): | |
| 219 for c in c2, c4: | |
| 220 c.transport.loseConnection() | |
| 221 return defer.DeferredList([ | |
| 222 defer.maybeDeferred(p.stopListening), | |
| 223 c2.dDisconnected, | |
| 224 c4.dDisconnected]) | |
| 225 | |
| 226 wrapTServer.deferred.addCallback(_connect123) | |
| 227 wrapTServer.deferred.addCallback(_check123) | |
| 228 wrapTServer.deferred.addCallback(_lose1) | |
| 229 wrapTServer.deferred.addCallback(_connect4) | |
| 230 wrapTServer.deferred.addCallback(_check4) | |
| 231 wrapTServer.deferred.addCallback(_cleanup) | |
| 232 return wrapTServer.deferred | |
| 233 | |
| 234 | |
| 235 def test_writeLimit(self): | |
| 236 """ | |
| 237 Check the writeLimit parameter: write data, and check for the pause | |
| 238 status. | |
| 239 """ | |
| 240 server = Server() | |
| 241 tServer = TestableThrottlingFactory(task.Clock(), server, writeLimit=10) | |
| 242 port = tServer.buildProtocol(address.IPv4Address('TCP', '127.0.0.1', 0)) | |
| 243 tr = PausableStringTransport() | |
| 244 tr.protocol = port | |
| 245 port.makeConnection(tr) | |
| 246 port.producer = port.wrappedProtocol | |
| 247 | |
| 248 port.dataReceived("0123456789") | |
| 249 port.dataReceived("abcdefghij") | |
| 250 self.assertEquals(tr.value(), "0123456789abcdefghij") | |
| 251 self.assertEquals(tServer.writtenThisSecond, 20) | |
| 252 self.assertFalse(port.wrappedProtocol.paused) | |
| 253 | |
| 254 # at this point server should've written 20 bytes, 10 bytes | |
| 255 # above the limit so writing should be paused around 1 second | |
| 256 # from 'now', and resumed a second after that | |
| 257 tServer.clock.advance(1.05) | |
| 258 self.assertEquals(tServer.writtenThisSecond, 0) | |
| 259 self.assertTrue(port.wrappedProtocol.paused) | |
| 260 | |
| 261 tServer.clock.advance(1.05) | |
| 262 self.assertEquals(tServer.writtenThisSecond, 0) | |
| 263 self.assertFalse(port.wrappedProtocol.paused) | |
| 264 | |
| 265 | |
| 266 def test_readLimit(self): | |
| 267 """ | |
| 268 Check the readLimit parameter: read data and check for the pause | |
| 269 status. | |
| 270 """ | |
| 271 server = Server() | |
| 272 tServer = TestableThrottlingFactory(task.Clock(), server, readLimit=10) | |
| 273 port = tServer.buildProtocol(address.IPv4Address('TCP', '127.0.0.1', 0)) | |
| 274 tr = PausableStringTransport() | |
| 275 tr.protocol = port | |
| 276 port.makeConnection(tr) | |
| 277 | |
| 278 port.dataReceived("0123456789") | |
| 279 port.dataReceived("abcdefghij") | |
| 280 self.assertEquals(tr.value(), "0123456789abcdefghij") | |
| 281 self.assertEquals(tServer.readThisSecond, 20) | |
| 282 | |
| 283 tServer.clock.advance(1.05) | |
| 284 self.assertEquals(tServer.readThisSecond, 0) | |
| 285 self.assertTrue(tr.paused) | |
| 286 | |
| 287 tServer.clock.advance(1.05) | |
| 288 self.assertEquals(tServer.readThisSecond, 0) | |
| 289 self.assertFalse(tr.paused) | |
| 290 | |
| 291 tr.clear() | |
| 292 port.dataReceived("0123456789") | |
| 293 port.dataReceived("abcdefghij") | |
| 294 self.assertEquals(tr.value(), "0123456789abcdefghij") | |
| 295 self.assertEquals(tServer.readThisSecond, 20) | |
| 296 | |
| 297 tServer.clock.advance(1.05) | |
| 298 self.assertEquals(tServer.readThisSecond, 0) | |
| 299 self.assertTrue(tr.paused) | |
| 300 | |
| 301 tServer.clock.advance(1.05) | |
| 302 self.assertEquals(tServer.readThisSecond, 0) | |
| 303 self.assertFalse(tr.paused) | |
| 304 | |
| 305 | |
| 306 | |
| 307 class TimeoutTestCase(unittest.TestCase): | |
| 308 """ | |
| 309 Tests for L{policies.TimeoutFactory}. | |
| 310 """ | |
| 311 | |
| 312 def setUp(self): | |
| 313 """ | |
| 314 Create a testable, deterministic clock, and a set of | |
| 315 server factory/protocol/transport. | |
| 316 """ | |
| 317 self.clock = task.Clock() | |
| 318 wrappedFactory = protocol.ServerFactory() | |
| 319 wrappedFactory.protocol = SimpleProtocol | |
| 320 self.factory = TestableTimeoutFactory(self.clock, wrappedFactory, 3) | |
| 321 self.proto = self.factory.buildProtocol( | |
| 322 address.IPv4Address('TCP', '127.0.0.1', 12345)) | |
| 323 self.transport = StringTransportWithDisconnection() | |
| 324 self.transport.protocol = self.proto | |
| 325 self.proto.makeConnection(self.transport) | |
| 326 | |
| 327 | |
| 328 def test_timeout(self): | |
| 329 """ | |
| 330 Make sure that when a TimeoutFactory accepts a connection, it will | |
| 331 time out that connection if no data is read or written within the | |
| 332 timeout period. | |
| 333 """ | |
| 334 # Let almost 3 time units pass | |
| 335 self.clock.pump([0.0, 0.5, 1.0, 1.0, 0.4]) | |
| 336 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 337 | |
| 338 # Now let the timer elapse | |
| 339 self.clock.pump([0.0, 0.2]) | |
| 340 self.failUnless(self.proto.wrappedProtocol.disconnected) | |
| 341 | |
| 342 | |
| 343 def test_sendAvoidsTimeout(self): | |
| 344 """ | |
| 345 Make sure that writing data to a transport from a protocol | |
| 346 constructed by a TimeoutFactory resets the timeout countdown. | |
| 347 """ | |
| 348 # Let half the countdown period elapse | |
| 349 self.clock.pump([0.0, 0.5, 1.0]) | |
| 350 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 351 | |
| 352 # Send some data (self.proto is the /real/ proto's transport, so this | |
| 353 # is the write that gets called) | |
| 354 self.proto.write('bytes bytes bytes') | |
| 355 | |
| 356 # More time passes, putting us past the original timeout | |
| 357 self.clock.pump([0.0, 1.0, 1.0]) | |
| 358 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 359 | |
| 360 # Make sure writeSequence delays timeout as well | |
| 361 self.proto.writeSequence(['bytes'] * 3) | |
| 362 | |
| 363 # Tick tock | |
| 364 self.clock.pump([0.0, 1.0, 1.0]) | |
| 365 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 366 | |
| 367 # Don't write anything more, just let the timeout expire | |
| 368 self.clock.pump([0.0, 2.0]) | |
| 369 self.failUnless(self.proto.wrappedProtocol.disconnected) | |
| 370 | |
| 371 | |
| 372 def test_receiveAvoidsTimeout(self): | |
| 373 """ | |
| 374 Make sure that receiving data also resets the timeout countdown. | |
| 375 """ | |
| 376 # Let half the countdown period elapse | |
| 377 self.clock.pump([0.0, 1.0, 0.5]) | |
| 378 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 379 | |
| 380 # Some bytes arrive, they should reset the counter | |
| 381 self.proto.dataReceived('bytes bytes bytes') | |
| 382 | |
| 383 # We pass the original timeout | |
| 384 self.clock.pump([0.0, 1.0, 1.0]) | |
| 385 self.failIf(self.proto.wrappedProtocol.disconnected) | |
| 386 | |
| 387 # Nothing more arrives though, the new timeout deadline is passed, | |
| 388 # the connection should be dropped. | |
| 389 self.clock.pump([0.0, 1.0, 1.0]) | |
| 390 self.failUnless(self.proto.wrappedProtocol.disconnected) | |
| 391 | |
| 392 | |
| 393 | |
| 394 class TimeoutTester(protocol.Protocol, policies.TimeoutMixin): | |
| 395 """ | |
| 396 A testable protocol with timeout facility. | |
| 397 | |
| 398 @ivar timedOut: set to C{True} if a timeout has been detected. | |
| 399 @type timedOut: C{bool} | |
| 400 """ | |
| 401 timeOut = 3 | |
| 402 timedOut = False | |
| 403 | |
| 404 def __init__(self, clock): | |
| 405 """ | |
| 406 Initialize the protocol with a C{task.Clock} object. | |
| 407 """ | |
| 408 self.clock = clock | |
| 409 | |
| 410 | |
| 411 def connectionMade(self): | |
| 412 """ | |
| 413 Upon connection, set the timeout. | |
| 414 """ | |
| 415 self.setTimeout(self.timeOut) | |
| 416 | |
| 417 | |
| 418 def dataReceived(self, data): | |
| 419 """ | |
| 420 Reset the timeout on data. | |
| 421 """ | |
| 422 self.resetTimeout() | |
| 423 protocol.Protocol.dataReceived(self, data) | |
| 424 | |
| 425 | |
| 426 def connectionLost(self, reason=None): | |
| 427 """ | |
| 428 On connection lost, cancel all timeout operations. | |
| 429 """ | |
| 430 self.setTimeout(None) | |
| 431 | |
| 432 | |
| 433 def timeoutConnection(self): | |
| 434 """ | |
| 435 Flags the timedOut variable to indicate the timeout of the connection. | |
| 436 """ | |
| 437 self.timedOut = True | |
| 438 | |
| 439 | |
| 440 def callLater(self, timeout, func, *args, **kwargs): | |
| 441 """ | |
| 442 Override callLater to use the deterministic clock. | |
| 443 """ | |
| 444 return self.clock.callLater(timeout, func, *args, **kwargs) | |
| 445 | |
| 446 | |
| 447 | |
| 448 class TestTimeout(unittest.TestCase): | |
| 449 """ | |
| 450 Tests for L{policies.TimeoutMixin}. | |
| 451 """ | |
| 452 | |
| 453 def setUp(self): | |
| 454 """ | |
| 455 Create a testable, deterministic clock and a C{TimeoutTester} instance. | |
| 456 """ | |
| 457 self.clock = task.Clock() | |
| 458 self.proto = TimeoutTester(self.clock) | |
| 459 | |
| 460 | |
| 461 def test_overriddenCallLater(self): | |
| 462 """ | |
| 463 Test that the callLater of the clock is used instead of | |
| 464 C{reactor.callLater}. | |
| 465 """ | |
| 466 self.proto.setTimeout(10) | |
| 467 self.assertEquals(len(self.clock.calls), 1) | |
| 468 | |
| 469 | |
| 470 def test_timeout(self): | |
| 471 """ | |
| 472 Check that the protocol does timeout at the time specified by its | |
| 473 C{timeOut} attribute. | |
| 474 """ | |
| 475 s = StringIOWithoutClosing() | |
| 476 self.proto.makeConnection(protocol.FileWrapper(s)) | |
| 477 | |
| 478 # timeOut value is 3 | |
| 479 self.clock.pump([0, 0.5, 1.0, 1.0]) | |
| 480 self.failIf(self.proto.timedOut) | |
| 481 self.clock.pump([0, 1.0]) | |
| 482 self.failUnless(self.proto.timedOut) | |
| 483 | |
| 484 | |
| 485 def test_noTimeout(self): | |
| 486 """ | |
| 487 Check that receiving data is delaying the timeout of the connection. | |
| 488 """ | |
| 489 s = StringIOWithoutClosing() | |
| 490 self.proto.makeConnection(protocol.FileWrapper(s)) | |
| 491 | |
| 492 self.clock.pump([0, 0.5, 1.0, 1.0]) | |
| 493 self.failIf(self.proto.timedOut) | |
| 494 self.proto.dataReceived('hello there') | |
| 495 self.clock.pump([0, 1.0, 1.0, 0.5]) | |
| 496 self.failIf(self.proto.timedOut) | |
| 497 self.clock.pump([0, 1.0]) | |
| 498 self.failUnless(self.proto.timedOut) | |
| 499 | |
| 500 | |
| 501 def test_resetTimeout(self): | |
| 502 """ | |
| 503 Check that setting a new value for timeout cancel the previous value | |
| 504 and install a new timeout. | |
| 505 """ | |
| 506 self.proto.timeOut = None | |
| 507 s = StringIOWithoutClosing() | |
| 508 self.proto.makeConnection(protocol.FileWrapper(s)) | |
| 509 | |
| 510 self.proto.setTimeout(1) | |
| 511 self.assertEquals(self.proto.timeOut, 1) | |
| 512 | |
| 513 self.clock.pump([0, 0.9]) | |
| 514 self.failIf(self.proto.timedOut) | |
| 515 self.clock.pump([0, 0.2]) | |
| 516 self.failUnless(self.proto.timedOut) | |
| 517 | |
| 518 | |
| 519 def test_cancelTimeout(self): | |
| 520 """ | |
| 521 Setting the timeout to C{None} cancel any timeout operations. | |
| 522 """ | |
| 523 self.proto.timeOut = 5 | |
| 524 s = StringIOWithoutClosing() | |
| 525 self.proto.makeConnection(protocol.FileWrapper(s)) | |
| 526 | |
| 527 self.proto.setTimeout(None) | |
| 528 self.assertEquals(self.proto.timeOut, None) | |
| 529 | |
| 530 self.clock.pump([0, 5, 5, 5]) | |
| 531 self.failIf(self.proto.timedOut) | |
| 532 | |
| 533 | |
| 534 def test_return(self): | |
| 535 """ | |
| 536 setTimeout should return the value of the previous timeout. | |
| 537 """ | |
| 538 self.proto.timeOut = 5 | |
| 539 | |
| 540 self.assertEquals(self.proto.setTimeout(10), 5) | |
| 541 self.assertEquals(self.proto.setTimeout(None), 10) | |
| 542 self.assertEquals(self.proto.setTimeout(1), None) | |
| 543 self.assertEquals(self.proto.timeOut, 1) | |
| 544 | |
| 545 # Clean up the DelayedCall | |
| 546 self.proto.setTimeout(None) | |
| 547 | |
| 548 | |
| 549 | |
| 550 class LimitTotalConnectionsFactoryTestCase(unittest.TestCase): | |
| 551 """Tests for policies.LimitTotalConnectionsFactory""" | |
| 552 def testConnectionCounting(self): | |
| 553 # Make a basic factory | |
| 554 factory = policies.LimitTotalConnectionsFactory() | |
| 555 factory.protocol = protocol.Protocol | |
| 556 | |
| 557 # connectionCount starts at zero | |
| 558 self.assertEqual(0, factory.connectionCount) | |
| 559 | |
| 560 # connectionCount increments as connections are made | |
| 561 p1 = factory.buildProtocol(None) | |
| 562 self.assertEqual(1, factory.connectionCount) | |
| 563 p2 = factory.buildProtocol(None) | |
| 564 self.assertEqual(2, factory.connectionCount) | |
| 565 | |
| 566 # and decrements as they are lost | |
| 567 p1.connectionLost(None) | |
| 568 self.assertEqual(1, factory.connectionCount) | |
| 569 p2.connectionLost(None) | |
| 570 self.assertEqual(0, factory.connectionCount) | |
| 571 | |
| 572 def testConnectionLimiting(self): | |
| 573 # Make a basic factory with a connection limit of 1 | |
| 574 factory = policies.LimitTotalConnectionsFactory() | |
| 575 factory.protocol = protocol.Protocol | |
| 576 factory.connectionLimit = 1 | |
| 577 | |
| 578 # Make a connection | |
| 579 p = factory.buildProtocol(None) | |
| 580 self.assertNotEqual(None, p) | |
| 581 self.assertEqual(1, factory.connectionCount) | |
| 582 | |
| 583 # Try to make a second connection, which will exceed the connection | |
| 584 # limit. This should return None, because overflowProtocol is None. | |
| 585 self.assertEqual(None, factory.buildProtocol(None)) | |
| 586 self.assertEqual(1, factory.connectionCount) | |
| 587 | |
| 588 # Define an overflow protocol | |
| 589 class OverflowProtocol(protocol.Protocol): | |
| 590 def connectionMade(self): | |
| 591 factory.overflowed = True | |
| 592 factory.overflowProtocol = OverflowProtocol | |
| 593 factory.overflowed = False | |
| 594 | |
| 595 # Try to make a second connection again, now that we have an overflow | |
| 596 # protocol. Note that overflow connections count towards the connection | |
| 597 # count. | |
| 598 op = factory.buildProtocol(None) | |
| 599 op.makeConnection(None) # to trigger connectionMade | |
| 600 self.assertEqual(True, factory.overflowed) | |
| 601 self.assertEqual(2, factory.connectionCount) | |
| 602 | |
| 603 # Close the connections. | |
| 604 p.connectionLost(None) | |
| 605 self.assertEqual(1, factory.connectionCount) | |
| 606 op.connectionLost(None) | |
| 607 self.assertEqual(0, factory.connectionCount) | |
| 608 | |
| 609 | |
| 610 class WriteSequenceEchoProtocol(EchoProtocol): | |
| 611 def dataReceived(self, bytes): | |
| 612 if bytes.find('vector!') != -1: | |
| 613 self.transport.writeSequence([bytes]) | |
| 614 else: | |
| 615 EchoProtocol.dataReceived(self, bytes) | |
| 616 | |
| 617 class TestLoggingFactory(policies.TrafficLoggingFactory): | |
| 618 openFile = None | |
| 619 def open(self, name): | |
| 620 assert self.openFile is None, "open() called too many times" | |
| 621 self.openFile = StringIO() | |
| 622 return self.openFile | |
| 623 | |
| 624 | |
| 625 | |
| 626 class LoggingFactoryTestCase(unittest.TestCase): | |
| 627 """ | |
| 628 Tests for L{policies.TrafficLoggingFactory}. | |
| 629 """ | |
| 630 | |
| 631 def test_thingsGetLogged(self): | |
| 632 """ | |
| 633 Check the output produced by L{policies.TrafficLoggingFactory}. | |
| 634 """ | |
| 635 wrappedFactory = Server() | |
| 636 wrappedFactory.protocol = WriteSequenceEchoProtocol | |
| 637 t = StringTransportWithDisconnection() | |
| 638 f = TestLoggingFactory(wrappedFactory, 'test') | |
| 639 p = f.buildProtocol(('1.2.3.4', 5678)) | |
| 640 t.protocol = p | |
| 641 p.makeConnection(t) | |
| 642 | |
| 643 v = f.openFile.getvalue() | |
| 644 self.failUnless('*' in v, "* not found in %r" % (v,)) | |
| 645 self.failIf(t.value()) | |
| 646 | |
| 647 p.dataReceived('here are some bytes') | |
| 648 | |
| 649 v = f.openFile.getvalue() | |
| 650 self.assertIn("C 1: 'here are some bytes'", v) | |
| 651 self.assertIn("S 1: 'here are some bytes'", v) | |
| 652 self.assertEquals(t.value(), 'here are some bytes') | |
| 653 | |
| 654 t.clear() | |
| 655 p.dataReceived('prepare for vector! to the extreme') | |
| 656 v = f.openFile.getvalue() | |
| 657 self.assertIn("SV 1: ['prepare for vector! to the extreme']", v) | |
| 658 self.assertEquals(t.value(), 'prepare for vector! to the extreme') | |
| 659 | |
| 660 p.loseConnection() | |
| 661 | |
| 662 v = f.openFile.getvalue() | |
| 663 self.assertIn('ConnectionDone', v) | |
| 664 | |
| 665 | |
| 666 def test_counter(self): | |
| 667 """ | |
| 668 Test counter management with the resetCounter method. | |
| 669 """ | |
| 670 wrappedFactory = Server() | |
| 671 f = TestLoggingFactory(wrappedFactory, 'test') | |
| 672 self.assertEqual(f._counter, 0) | |
| 673 f.buildProtocol(('1.2.3.4', 5678)) | |
| 674 self.assertEqual(f._counter, 1) | |
| 675 # Reset log file | |
| 676 f.openFile = None | |
| 677 f.buildProtocol(('1.2.3.4', 5679)) | |
| 678 self.assertEqual(f._counter, 2) | |
| 679 | |
| 680 f.resetCounter() | |
| 681 self.assertEqual(f._counter, 0) | |
| 682 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 12261012:
Remove third_party/twisted_8_1 (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/tools/build