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57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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import subprocess
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import time
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import unittest
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import testlib
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import mitogen.master
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class IterReadTest(unittest.TestCase):
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func = staticmethod(mitogen.master.iter_read)
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def make_proc(self):
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args = [testlib.data_path('iter_read_generator.sh')]
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return subprocess.Popen(args, stdout=subprocess.PIPE)
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def test_no_deadline(self):
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proc = self.make_proc()
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try:
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reader = self.func(proc.stdout.fileno())
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for i, chunk in enumerate(reader, 1):
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assert i == int(chunk)
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if i > 3:
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break
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finally:
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proc.terminate()
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def test_deadline_exceeded_before_call(self):
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proc = self.make_proc()
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reader = self.func(proc.stdout.fileno(), 0)
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try:
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got = []
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try:
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for chunk in reader:
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got.append(chunk)
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assert 0, 'TimeoutError not raised'
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except mitogen.core.TimeoutError:
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assert len(got) == 0
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finally:
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proc.terminate()
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def test_deadline_exceeded_during_call(self):
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proc = self.make_proc()
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reader = self.func(proc.stdout.fileno(), time.time() + 0.4)
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try:
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got = []
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try:
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for chunk in reader:
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got.append(chunk)
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assert 0, 'TimeoutError not raised'
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except mitogen.core.TimeoutError:
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# Give a little wiggle room in case of imperfect scheduling.
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# Ideal number should be 9.
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assert 3 < len(got) < 5
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finally:
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proc.terminate()
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