def testSettingGettingAndHavingContext(self):
"""Should be able to set context, get it, and check for membership"""
self.assertRaises(KeyError, context.get, 'foo')
with context.set(foo='bar'):
self.assertEquals('bar', context.get('foo'))
self.assertFalse(context.has('foo'))
def testSettingGettingAndHavingContext(self):
"""Should be able to set context, get it, and check for membership"""
self.assertRaises(KeyError, context.get, 'foo')
with context.set(foo='bar'):
self.assertEquals('bar', context.get('foo'))
self.assertFalse(context.has('foo'))
def notCrashySleepWithNonRootContext(self, sleepFor, parentCtx, **kwargs):
"""Sleeps for sleepFor seconds and then asserts that kwargs + parentCtx is the current context"""
expected = {}
expected.update(parentCtx)
expected.update(kwargs)
with context.set(**kwargs):
yield sleep(sleepFor)
self.assertEquals(expected, context.all())
def notCrashySleepWithNonRootContext(self, sleepFor, parentCtx, **kwargs):
"""Sleeps for sleepFor seconds and then asserts that kwargs + parentCtx is the current context"""
expected = {}
expected.update(parentCtx)
expected.update(kwargs)
with context.set(**kwargs):
yield sleep(sleepFor)
self.assertEquals(expected, context.all())
def testMaintainsNonRootContextAcrossUnyieldedDeferred(self):
"""Deferreds that exist at the same time under a parent context should not interfere and have that parent context"""
with context.set(parent=1):
a = self.notCrashySleepWithNonRootContext(0.01, {'parent': 1}, a=1)
b = self.notCrashySleepWithNonRootContext(0.001, {'parent': 1}, b=2)
yield sleep(0.02)
yield DeferredList([a, b])
def testInlineCallbacks(self):
"""Test context saving across I/O."""
with context.set(someValue=12345):
yield time.sleep(0.001)
self.assertFalse(context.has('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
self.assertTrue(context.has('someValue'))
with context.set(anotherValue='abcde'):
yield client.getPage('http://greplin.com')
self.assertEqual('abcde', context.get('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
yield threads.deferToThread(lambda: None)
self.assertFalse(context.has('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
self.assertTrue(context.has('someValue'))
self.assertFalse(context.has('someValue'))
def testMaintainsNonRootContextAcrossUnyieldedDeferred(self):
"""Deferreds that exist at the same time under a parent context should not interfere and have that parent context"""
with context.set(parent=1):
a = self.notCrashySleepWithNonRootContext(0.01, {'parent': 1}, a=1)
b = self.notCrashySleepWithNonRootContext(0.001, {'parent': 1},
b=2)
yield sleep(0.02)
yield DeferredList([a, b])
def testInlineCallbacks(self):
"""Test context saving across I/O."""
with context.set(someValue = 12345):
yield time.sleep(0.001)
self.assertFalse(context.has('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
self.assertTrue(context.has('someValue'))
with context.set(anotherValue = 'abcde'):
yield client.getPage('http://greplin.com')
self.assertEqual('abcde', context.get('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
yield threads.deferToThread(lambda: None)
self.assertFalse(context.has('anotherValue'))
self.assertEqual(12345, context.get('someValue'))
self.assertTrue(context.has('someValue'))
self.assertFalse(context.has('someValue'))
def testContextIsRestoredWhenExceptionsThrown(self):
"""
When an error occurs in a deferred, context should be restored appropriately
This test has a follow up that imposes an ordering requirement based on method name.
"""
self.assertFalse(context.has('foo'))
try:
with context.set(foo='bar'):
self.assert_(context.has('foo'))
yield threads.deferToThread(self.crashy)
except AssertionError:
pass
self.assertFalse(context.has('foo'))
def testContextIsRestoredWhenExceptionsThrown(self):
"""
When an error occurs in a deferred, context should be restored appropriately
This test has a follow up that imposes an ordering requirement based on method name.
"""
self.assertFalse(context.has('foo'))
try:
with context.set(foo='bar'):
self.assert_(context.has('foo'))
yield threads.deferToThread(self.crashy)
except AssertionError:
pass
self.assertFalse(context.has('foo'))
def testFromDelay(self):
"""Test saving context across a delayed call."""
with context.set(source='delay'):
return time.sleep(0.001).addCallback(
lambda _: self.assertEqual('delay', context.get('source')))
def testFromThread(self):
"""Test saving context across a thread deferment."""
with context.set(source='thread'):
return threads.deferToThread(lambda: None). \
addCallback(lambda _: self.assertEqual('thread', context.get('source')))
def testFromRequest(self):
"""Test saving context across a socket request."""
with context.set(source='page'):
return client.getPage('http://greplin.com').addCallback(
lambda _: self.assertEqual('page', context.get('source')))
def notCrashySleep(self, sleepFor, **kwargs):
"""Sleeps for sleepFor seconds and asserts that kwargs is equal to the stored context variables"""
with context.set(**kwargs):
yield sleep(sleepFor)
self.assertEquals(kwargs, context.all())
def testFromDelay(self):
"""Test saving context across a delayed call."""
with context.set(source = 'delay'):
return time.sleep(0.001).addCallback(lambda _: self.assertEqual('delay', context.get('source')))
def testFromThread(self):
"""Test saving context across a thread deferment."""
with context.set(source = 'thread'):
return threads.deferToThread(lambda: None). \
addCallback(lambda _: self.assertEqual('thread', context.get('source')))
def testFromRequest(self):
"""Test saving context across a socket request."""
with context.set(source = 'page'):
return client.getPage('http://greplin.com').addCallback(lambda _: self.assertEqual('page', context.get('source')))
def notCrashySleep(self, sleepFor, **kwargs):
"""Sleeps for sleepFor seconds and asserts that kwargs is equal to the stored context variables"""
with context.set(**kwargs):
yield sleep(sleepFor)
self.assertEquals(kwargs, context.all())