345 lines
11 KiB
Python
345 lines
11 KiB
Python
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import unittest
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import win32trace
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import threading
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import time
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import os
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import sys
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if __name__=='__main__':
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this_file = sys.argv[0]
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else:
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this_file = __file__
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def CheckNoOtherReaders():
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win32trace.write("Hi")
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time.sleep(0.05)
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if win32trace.read() != "Hi":
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# Reset everything so following tests still fail with this error!
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win32trace.TermRead()
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win32trace.TermWrite()
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raise RuntimeError("An existing win32trace reader appears to be " \
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"running - please stop this process and try again")
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class TestInitOps(unittest.TestCase):
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def setUp(self):
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# clear old data
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win32trace.InitRead()
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win32trace.read()
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win32trace.TermRead()
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def tearDown(self):
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try:
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win32trace.TermRead()
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except win32trace.error:
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pass
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try:
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win32trace.TermWrite()
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except win32trace.error:
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pass
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def testInitTermRead(self):
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self.assertRaises(win32trace.error, win32trace.read)
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win32trace.InitRead()
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result = win32trace.read()
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self.assertEquals(result, '')
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win32trace.TermRead()
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self.assertRaises(win32trace.error, win32trace.read)
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win32trace.InitRead()
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self.assertRaises(win32trace.error, win32trace.InitRead)
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win32trace.InitWrite()
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self.assertRaises(win32trace.error, win32trace.InitWrite)
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win32trace.TermWrite()
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win32trace.TermRead()
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def testInitTermWrite(self):
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self.assertRaises(win32trace.error, win32trace.write, 'Hei')
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win32trace.InitWrite()
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win32trace.write('Johan Galtung')
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win32trace.TermWrite()
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self.assertRaises(win32trace.error, win32trace.write, 'Hei')
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def testTermSematics(self):
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win32trace.InitWrite()
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win32trace.write('Ta da')
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# if we both Write and Read are terminated at the same time,
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# we lose the data as the win32 object is closed. Note that
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# if another writer is running, we do *not* lose the data - so
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# test for either the correct data or an empty string
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win32trace.TermWrite()
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win32trace.InitRead()
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self.failUnless(win32trace.read() in ['Ta da', ''])
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win32trace.TermRead()
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# we keep the data because we init read before terminating write
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win32trace.InitWrite()
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win32trace.write('Ta da')
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win32trace.InitRead()
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win32trace.TermWrite()
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self.assertEquals('Ta da', win32trace.read())
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win32trace.TermRead()
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class BasicSetupTearDown(unittest.TestCase):
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def setUp(self):
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win32trace.InitRead()
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# If any other writers are running (even if not actively writing),
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# terminating the module will *not* close the handle, meaning old data
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# will remain. This can cause other tests to fail.
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win32trace.read()
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win32trace.InitWrite()
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def tearDown(self):
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win32trace.TermWrite()
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win32trace.TermRead()
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class TestModuleOps(BasicSetupTearDown):
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def testRoundTrip(self):
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win32trace.write('Syver Enstad')
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syverEnstad = win32trace.read()
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self.assertEquals('Syver Enstad', syverEnstad)
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def testRoundTripUnicode(self):
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win32trace.write('\xa9opyright Syver Enstad')
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syverEnstad = win32trace.read()
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# str objects are always returned in py2k (latin-1 encoding was used
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# on unicode objects)
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self.assertEquals('\xa9opyright Syver Enstad', syverEnstad)
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def testBlockingRead(self):
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win32trace.write('Syver Enstad')
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self.assertEquals('Syver Enstad', win32trace.blockingread())
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def testBlockingReadUnicode(self):
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win32trace.write('\xa9opyright Syver Enstad')
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# str objects are always returned in py2k (latin-1 encoding was used
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# on unicode objects)
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self.assertEquals('\xa9opyright Syver Enstad', win32trace.blockingread())
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def testFlush(self):
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win32trace.flush()
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class TestTraceObjectOps(BasicSetupTearDown):
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def testInit(self):
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win32trace.TermRead()
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win32trace.TermWrite()
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traceObject = win32trace.GetTracer()
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self.assertRaises(win32trace.error, traceObject.read)
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self.assertRaises(win32trace.error, traceObject.write, '')
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win32trace.InitRead()
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win32trace.InitWrite()
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self.assertEquals('', traceObject.read())
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traceObject.write('Syver')
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def testFlush(self):
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traceObject = win32trace.GetTracer()
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traceObject.flush()
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def testIsatty(self):
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tracer = win32trace.GetTracer()
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assert tracer.isatty() == False
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def testRoundTrip(self):
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traceObject = win32trace.GetTracer()
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traceObject.write('Syver Enstad')
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self.assertEquals('Syver Enstad', traceObject.read())
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class WriterThread(threading.Thread):
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def run(self):
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self.writeCount = 0
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for each in range(self.BucketCount):
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win32trace.write(str(each))
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self.writeCount = self.BucketCount
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def verifyWritten(self):
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return self.writeCount == self.BucketCount
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class TestMultipleThreadsWriting(unittest.TestCase):
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# FullBucket is the thread count
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FullBucket = 50
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BucketCount = 9 # buckets must be a single digit number (ie. less than 10)
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def setUp(self):
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WriterThread.BucketCount = self.BucketCount
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win32trace.InitRead()
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win32trace.read() # clear any old data.
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win32trace.InitWrite()
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CheckNoOtherReaders()
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self.threads = [WriterThread() for each in range(self.FullBucket)]
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self.buckets = list(range(self.BucketCount))
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for each in self.buckets:
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self.buckets[each] = 0
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def tearDown(self):
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win32trace.TermRead()
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win32trace.TermWrite()
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def areBucketsFull(self):
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bucketsAreFull = True
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for each in self.buckets:
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assert each <= self.FullBucket, each
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if each != self.FullBucket:
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bucketsAreFull = False
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break
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return bucketsAreFull
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def read(self):
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while 1:
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readString = win32trace.blockingread()
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for ch in readString:
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integer = int(ch)
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count = self.buckets[integer]
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assert count != -1
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self.buckets[integer] = count + 1
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if self.buckets[integer] == self.FullBucket:
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if self.areBucketsFull():
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return
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def testThreads(self):
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for each in self.threads:
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each.start()
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self.read()
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for each in self.threads:
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each.join()
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for each in self.threads:
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assert each.verifyWritten()
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assert self.areBucketsFull()
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class TestHugeChunks(unittest.TestCase):
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# BiggestChunk is the size where we stop stressing the writer
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BiggestChunk = 2**16 # 256k should do it.
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def setUp(self):
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win32trace.InitRead()
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win32trace.read() # clear any old data
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win32trace.InitWrite()
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def testHugeChunks(self):
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data = "*" * 1023 + "\n"
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while len(data) <= self.BiggestChunk:
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win32trace.write(data)
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data = data + data
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# If we made it here, we passed.
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def tearDown(self):
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win32trace.TermRead()
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win32trace.TermWrite()
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import win32event
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import win32process
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class TraceWriteProcess:
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def __init__(self, threadCount):
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self.exitCode = -1
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self.threadCount = threadCount
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def start(self):
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procHandle, threadHandle, procId, threadId = win32process.CreateProcess(
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None, # appName
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'python.exe "%s" /run_test_process %s %s' % (this_file,
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self.BucketCount,
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self.threadCount),
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None, # process security
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None, # thread security
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0, # inherit handles
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win32process.NORMAL_PRIORITY_CLASS,
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None, # new environment
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None, # Current directory
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win32process.STARTUPINFO(), # startup info
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)
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self.processHandle = procHandle
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def join(self):
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win32event.WaitForSingleObject(self.processHandle,
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win32event.INFINITE)
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self.exitCode = win32process.GetExitCodeProcess(self.processHandle)
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def verifyWritten(self):
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return self.exitCode == 0
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class TestOutofProcess(unittest.TestCase):
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BucketCount = 9
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FullBucket = 50
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def setUp(self):
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win32trace.InitRead()
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TraceWriteProcess.BucketCount = self.BucketCount
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self.setUpWriters()
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self.buckets = list(range(self.BucketCount))
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for each in self.buckets:
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self.buckets[each] = 0
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def tearDown(self):
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win32trace.TermRead()
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def setUpWriters(self):
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self.processes = []
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# 5 processes, quot threads in each process
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quot, remainder = divmod(self.FullBucket, 5)
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for each in range(5):
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self.processes.append(TraceWriteProcess(quot))
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if remainder:
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self.processes.append(TraceWriteProcess(remainder))
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def areBucketsFull(self):
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bucketsAreFull = True
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for each in self.buckets:
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assert each <= self.FullBucket, each
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if each != self.FullBucket:
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bucketsAreFull = False
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break
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return bucketsAreFull
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def read(self):
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while 1:
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readString = win32trace.blockingread()
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for ch in readString:
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integer = int(ch)
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count = self.buckets[integer]
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assert count != -1
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self.buckets[integer] = count + 1
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if self.buckets[integer] == self.FullBucket:
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if self.areBucketsFull():
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return
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def testProcesses(self):
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for each in self.processes:
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each.start()
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self.read()
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for each in self.processes:
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each.join()
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for each in self.processes:
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assert each.verifyWritten()
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assert self.areBucketsFull()
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def _RunAsTestProcess():
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# Run as an external process by the main tests.
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WriterThread.BucketCount = int(sys.argv[2])
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threadCount = int(sys.argv[3])
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threads = [WriterThread() for each in range(threadCount)]
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win32trace.InitWrite()
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for t in threads:
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t.start()
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for t in threads:
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t.join()
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for t in threads:
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if not t.verifyWritten():
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sys.exit(-1)
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if __name__ == '__main__':
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if sys.argv[1:2]==["/run_test_process"]:
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_RunAsTestProcess()
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sys.exit(0)
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# If some other win32traceutil reader is running, these tests fail
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# badly (as the other reader sometimes sees the output!)
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win32trace.InitRead()
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win32trace.InitWrite()
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CheckNoOtherReaders()
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# reset state so test env is back to normal
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win32trace.TermRead()
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win32trace.TermWrite()
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unittest.main()
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