1 files changed, 167 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_poll.py b/lib/python2.7/test/test_poll.py
new file mode 100644
index 0000000..55294f8
--- /dev/null
+++ b/lib/python2.7/test/test_poll.py
@@ -0,0 +1,167 @@
+# Test case for the os.poll() function
+
+import os, select, random, unittest
+import _testcapi
+from test.test_support import TESTFN, run_unittest
+
+try:
+    select.poll
+except AttributeError:
+    raise unittest.SkipTest, "select.poll not defined -- skipping test_poll"
+
+
+def find_ready_matching(ready, flag):
+    match = []
+    for fd, mode in ready:
+        if mode & flag:
+            match.append(fd)
+    return match
+
+class PollTests(unittest.TestCase):
+
+    def test_poll1(self):
+        # Basic functional test of poll object
+        # Create a bunch of pipe and test that poll works with them.
+
+        p = select.poll()
+
+        NUM_PIPES = 12
+        MSG = " This is a test."
+        MSG_LEN = len(MSG)
+        readers = []
+        writers = []
+        r2w = {}
+        w2r = {}
+
+        for i in range(NUM_PIPES):
+            rd, wr = os.pipe()
+            p.register(rd)
+            p.modify(rd, select.POLLIN)
+            p.register(wr, select.POLLOUT)
+            readers.append(rd)
+            writers.append(wr)
+            r2w[rd] = wr
+            w2r[wr] = rd
+
+        bufs = []
+
+        while writers:
+            ready = p.poll()
+            ready_writers = find_ready_matching(ready, select.POLLOUT)
+            if not ready_writers:
+                raise RuntimeError, "no pipes ready for writing"
+            wr = random.choice(ready_writers)
+            os.write(wr, MSG)
+
+            ready = p.poll()
+            ready_readers = find_ready_matching(ready, select.POLLIN)
+            if not ready_readers:
+                raise RuntimeError, "no pipes ready for reading"
+            rd = random.choice(ready_readers)
+            buf = os.read(rd, MSG_LEN)
+            self.assertEqual(len(buf), MSG_LEN)
+            bufs.append(buf)
+            os.close(r2w[rd]) ; os.close( rd )
+            p.unregister( r2w[rd] )
+            p.unregister( rd )
+            writers.remove(r2w[rd])
+
+        self.assertEqual(bufs, [MSG] * NUM_PIPES)
+
+    def poll_unit_tests(self):
+        # returns NVAL for invalid file descriptor
+        FD = 42
+        try:
+            os.close(FD)
+        except OSError:
+            pass
+        p = select.poll()
+        p.register(FD)
+        r = p.poll()
+        self.assertEqual(r[0], (FD, select.POLLNVAL))
+
+        f = open(TESTFN, 'w')
+        fd = f.fileno()
+        p = select.poll()
+        p.register(f)
+        r = p.poll()
+        self.assertEqual(r[0][0], fd)
+        f.close()
+        r = p.poll()
+        self.assertEqual(r[0], (fd, select.POLLNVAL))
+        os.unlink(TESTFN)
+
+        # type error for invalid arguments
+        p = select.poll()
+        self.assertRaises(TypeError, p.register, p)
+        self.assertRaises(TypeError, p.unregister, p)
+
+        # can't unregister non-existent object
+        p = select.poll()
+        self.assertRaises(KeyError, p.unregister, 3)
+
+        # Test error cases
+        pollster = select.poll()
+        class Nope:
+            pass
+
+        class Almost:
+            def fileno(self):
+                return 'fileno'
+
+        self.assertRaises(TypeError, pollster.register, Nope(), 0)
+        self.assertRaises(TypeError, pollster.register, Almost(), 0)
+
+    # Another test case for poll().  This is copied from the test case for
+    # select(), modified to use poll() instead.
+
+    def test_poll2(self):
+        cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do echo testing...; sleep 1; done'
+        p = os.popen(cmd, 'r')
+        pollster = select.poll()
+        pollster.register( p, select.POLLIN )
+        for tout in (0, 1000, 2000, 4000, 8000, 16000) + (-1,)*10:
+            fdlist = pollster.poll(tout)
+            if (fdlist == []):
+                continue
+            fd, flags = fdlist[0]
+            if flags & select.POLLHUP:
+                line = p.readline()
+                if line != "":
+                    self.fail('error: pipe seems to be closed, but still returns data')
+                continue
+
+            elif flags & select.POLLIN:
+                line = p.readline()
+                if not line:
+                    break
+                continue
+            else:
+                self.fail('Unexpected return value from select.poll: %s' % fdlist)
+        p.close()
+
+    def test_poll3(self):
+        # test int overflow
+        pollster = select.poll()
+        pollster.register(1)
+
+        self.assertRaises(OverflowError, pollster.poll, 1L << 64)
+
+        x = 2 + 3
+        if x != 5:
+            self.fail('Overflow must have occurred')
+
+        pollster = select.poll()
+        # Issue 15989
+        self.assertRaises(OverflowError, pollster.register, 0,
+                          _testcapi.SHRT_MAX + 1)
+        self.assertRaises(OverflowError, pollster.register, 0,
+                          _testcapi.USHRT_MAX + 1)
+        self.assertRaises(OverflowError, pollster.poll, _testcapi.INT_MAX + 1)
+        self.assertRaises(OverflowError, pollster.poll, _testcapi.UINT_MAX + 1)
+
+def test_main():
+    run_unittest(PollTests)
+
+if __name__ == '__main__':
+    test_main()