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parallel-library/vendor/tornado/test/testing_test.py

160 lines
4.5 KiB
Python

#!/usr/bin/env python
from __future__ import absolute_import, division, print_function, with_statement
from tornado import gen, ioloop
from tornado.testing import AsyncTestCase, gen_test
from tornado.test.util import unittest
import contextlib
import os
@contextlib.contextmanager
def set_environ(name, value):
old_value = os.environ.get('name')
os.environ[name] = value
try:
yield
finally:
if old_value is None:
del os.environ[name]
else:
os.environ[name] = old_value
class AsyncTestCaseTest(AsyncTestCase):
def test_exception_in_callback(self):
self.io_loop.add_callback(lambda: 1 / 0)
try:
self.wait()
self.fail("did not get expected exception")
except ZeroDivisionError:
pass
def test_wait_timeout(self):
time = self.io_loop.time
# Accept default 5-second timeout, no error
self.io_loop.add_timeout(time() + 0.01, self.stop)
self.wait()
# Timeout passed to wait()
self.io_loop.add_timeout(time() + 1, self.stop)
with self.assertRaises(self.failureException):
self.wait(timeout=0.01)
# Timeout set with environment variable
self.io_loop.add_timeout(time() + 1, self.stop)
with set_environ('ASYNC_TEST_TIMEOUT', '0.01'):
with self.assertRaises(self.failureException):
self.wait()
def test_subsequent_wait_calls(self):
"""
This test makes sure that a second call to wait()
clears the first timeout.
"""
self.io_loop.add_timeout(self.io_loop.time() + 0.01, self.stop)
self.wait(timeout=0.02)
self.io_loop.add_timeout(self.io_loop.time() + 0.03, self.stop)
self.wait(timeout=0.15)
class SetUpTearDownTest(unittest.TestCase):
def test_set_up_tear_down(self):
"""
This test makes sure that AsyncTestCase calls super methods for
setUp and tearDown.
InheritBoth is a subclass of both AsyncTestCase and
SetUpTearDown, with the ordering so that the super of
AsyncTestCase will be SetUpTearDown.
"""
events = []
result = unittest.TestResult()
class SetUpTearDown(unittest.TestCase):
def setUp(self):
events.append('setUp')
def tearDown(self):
events.append('tearDown')
class InheritBoth(AsyncTestCase, SetUpTearDown):
def test(self):
events.append('test')
InheritBoth('test').run(result)
expected = ['setUp', 'test', 'tearDown']
self.assertEqual(expected, events)
class GenTest(AsyncTestCase):
def setUp(self):
super(GenTest, self).setUp()
self.finished = False
def tearDown(self):
self.assertTrue(self.finished)
super(GenTest, self).tearDown()
@gen_test
def test_sync(self):
self.finished = True
@gen_test
def test_async(self):
yield gen.Task(self.io_loop.add_callback)
self.finished = True
def test_timeout(self):
# Set a short timeout and exceed it.
@gen_test(timeout=0.1)
def test(self):
yield gen.Task(self.io_loop.add_timeout, self.io_loop.time() + 1)
with self.assertRaises(ioloop.TimeoutError):
test(self)
self.finished = True
def test_no_timeout(self):
# A test that does not exceed its timeout should succeed.
@gen_test(timeout=1)
def test(self):
time = self.io_loop.time
yield gen.Task(self.io_loop.add_timeout, time() + 0.1)
test(self)
self.finished = True
def test_timeout_environment_variable(self):
@gen_test(timeout=0.5)
def test_long_timeout(self):
time = self.io_loop.time
yield gen.Task(self.io_loop.add_timeout, time() + 0.25)
# Uses provided timeout of 0.5 seconds, doesn't time out.
with set_environ('ASYNC_TEST_TIMEOUT', '0.1'):
test_long_timeout(self)
self.finished = True
def test_no_timeout_environment_variable(self):
@gen_test(timeout=0.01)
def test_short_timeout(self):
time = self.io_loop.time
yield gen.Task(self.io_loop.add_timeout, time() + 1)
# Uses environment-variable timeout of 0.1, times out.
with set_environ('ASYNC_TEST_TIMEOUT', '0.1'):
with self.assertRaises(ioloop.TimeoutError):
test_short_timeout(self)
self.finished = True
if __name__ == '__main__':
unittest.main()