/usr/share/pyshared/wokkel/test/test_compat.py is in python-wokkel 0.7.1-1.
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# Copyright (c) Ralph Meijer.
# See LICENSE for details.
"""
Tests for L{wokkel.compat}.
"""
from zope.interface import implements
from twisted.internet import task
from twisted.internet.interfaces import IReactorTime
from twisted.trial import unittest
from twisted.words.protocols.jabber import xmlstream
from wokkel.compat import IQ
from wokkel.compat import NamedConstant, Names, ValueConstant, Values
class DeprecationTest(unittest.TestCase):
"""
Deprecation tests for L{wokkel.compat}.
"""
def lookForDeprecationWarning(self, testmethod, attributeName, newName):
"""
Importing C{testmethod} emits a deprecation warning.
"""
warningsShown = self.flushWarnings([testmethod])
self.assertEqual(len(warningsShown), 1)
self.assertIdentical(warningsShown[0]['category'], DeprecationWarning)
self.assertEqual(
warningsShown[0]['message'],
"wokkel.compat." + attributeName + " "
"was deprecated in Wokkel 0.7.0: Use " + newName + " instead.")
def test_bootstrapMixinTest(self):
"""
L{compat.BootstrapMixin} is deprecated.
"""
from wokkel.compat import BootstrapMixin
BootstrapMixin
self.lookForDeprecationWarning(
self.test_bootstrapMixinTest,
"BootstrapMixin",
"twisted.words.xish.xmlstream.BootstrapMixin")
def test_xmlStreamServerFactory(self):
"""
L{compat.XmlStreamServerFactory} is deprecated.
"""
from wokkel.compat import XmlStreamServerFactory
XmlStreamServerFactory
self.lookForDeprecationWarning(
self.test_xmlStreamServerFactory,
"XmlStreamServerFactory",
"twisted.words.protocols.jabber.xmlstream."
"XmlStreamServerFactory")
class FakeReactor(object):
implements(IReactorTime)
def __init__(self):
self.clock = task.Clock()
self.callLater = self.clock.callLater
self.getDelayedCalls = self.clock.getDelayedCalls
class IQTest(unittest.TestCase):
"""
Tests for L{IQ}.
"""
def setUp(self):
self.reactor = FakeReactor()
self.clock = self.reactor.clock
def testRequestTimingOutEventDispatcher(self):
"""
Test that an iq request with a defined timeout times out.
"""
from twisted.words.xish import utility
output = []
xs = utility.EventDispatcher()
xs.send = output.append
self.iq = IQ(xs, reactor=self.reactor)
self.iq.timeout = 60
d = self.iq.send()
self.assertFailure(d, xmlstream.TimeoutError)
self.clock.pump([1, 60])
self.assertFalse(self.reactor.getDelayedCalls())
self.assertFalse(xs.iqDeferreds)
return d
class NamedConstantTests(unittest.TestCase):
"""
Tests for the L{twisted.python.constants.NamedConstant} class which is used
to represent individual values.
"""
def setUp(self):
"""
Create a dummy container into which constants can be placed.
"""
class foo(Names):
pass
self.container = foo
def test_name(self):
"""
The C{name} attribute of a L{NamedConstant} refers to the value passed
for the C{name} parameter to C{_realize}.
"""
name = NamedConstant()
name._realize(self.container, "bar", None)
self.assertEqual("bar", name.name)
def test_representation(self):
"""
The string representation of an instance of L{NamedConstant} includes
the container the instances belongs to as well as the instance's name.
"""
name = NamedConstant()
name._realize(self.container, "bar", None)
self.assertEqual("<foo=bar>", repr(name))
def test_equality(self):
"""
A L{NamedConstant} instance compares equal to itself.
"""
name = NamedConstant()
name._realize(self.container, "bar", None)
self.assertTrue(name == name)
self.assertFalse(name != name)
def test_nonequality(self):
"""
Two different L{NamedConstant} instances do not compare equal to each
other.
"""
first = NamedConstant()
first._realize(self.container, "bar", None)
second = NamedConstant()
second._realize(self.container, "bar", None)
self.assertFalse(first == second)
self.assertTrue(first != second)
def test_hash(self):
"""
Because two different L{NamedConstant} instances do not compare as equal
to each other, they also have different hashes to avoid collisions when
added to a C{dict} or C{set}.
"""
first = NamedConstant()
first._realize(self.container, "bar", None)
second = NamedConstant()
second._realize(self.container, "bar", None)
self.assertNotEqual(hash(first), hash(second))
class _ConstantsTestsMixin(object):
"""
Mixin defining test helpers common to multiple types of constants
collections.
"""
def _notInstantiableTest(self, name, cls):
"""
Assert that an attempt to instantiate the constants class raises
C{TypeError}.
@param name: A C{str} giving the name of the constants collection.
@param cls: The constants class to test.
"""
exc = self.assertRaises(TypeError, cls)
self.assertEqual(name + " may not be instantiated.", str(exc))
class NamesTests(unittest.TestCase, _ConstantsTestsMixin):
"""
Tests for L{twisted.python.constants.Names}, a base class for containers of
related constaints.
"""
def setUp(self):
"""
Create a fresh new L{Names} subclass for each unit test to use. Since
L{Names} is stateful, re-using the same subclass across test methods
makes exercising all of the implementation code paths difficult.
"""
class METHOD(Names):
"""
A container for some named constants to use in unit tests for
L{Names}.
"""
GET = NamedConstant()
PUT = NamedConstant()
POST = NamedConstant()
DELETE = NamedConstant()
self.METHOD = METHOD
def test_notInstantiable(self):
"""
A subclass of L{Names} raises C{TypeError} if an attempt is made to
instantiate it.
"""
self._notInstantiableTest("METHOD", self.METHOD)
def test_symbolicAttributes(self):
"""
Each name associated with a L{NamedConstant} instance in the definition
of a L{Names} subclass is available as an attribute on the resulting
class.
"""
self.assertTrue(hasattr(self.METHOD, "GET"))
self.assertTrue(hasattr(self.METHOD, "PUT"))
self.assertTrue(hasattr(self.METHOD, "POST"))
self.assertTrue(hasattr(self.METHOD, "DELETE"))
def test_withoutOtherAttributes(self):
"""
As usual, names not defined in the class scope of a L{Names}
subclass are not available as attributes on the resulting class.
"""
self.assertFalse(hasattr(self.METHOD, "foo"))
def test_representation(self):
"""
The string representation of a constant on a L{Names} subclass includes
the name of the L{Names} subclass and the name of the constant itself.
"""
self.assertEqual("<METHOD=GET>", repr(self.METHOD.GET))
def test_lookupByName(self):
"""
Constants can be looked up by name using L{Names.lookupByName}.
"""
method = self.METHOD.lookupByName("GET")
self.assertIdentical(self.METHOD.GET, method)
def test_notLookupMissingByName(self):
"""
Names not defined with a L{NamedConstant} instance cannot be looked up
using L{Names.lookupByName}.
"""
self.assertRaises(ValueError, self.METHOD.lookupByName, "lookupByName")
self.assertRaises(ValueError, self.METHOD.lookupByName, "__init__")
self.assertRaises(ValueError, self.METHOD.lookupByName, "foo")
def test_name(self):
"""
The C{name} attribute of one of the named constants gives that
constant's name.
"""
self.assertEqual("GET", self.METHOD.GET.name)
def test_attributeIdentity(self):
"""
Repeated access of an attribute associated with a L{NamedConstant} value
in a L{Names} subclass results in the same object.
"""
self.assertIdentical(self.METHOD.GET, self.METHOD.GET)
def test_iterconstants(self):
"""
L{Names.iterconstants} returns an iterator over all of the constants
defined in the class, in the order they were defined.
"""
constants = list(self.METHOD.iterconstants())
self.assertEqual(
[self.METHOD.GET, self.METHOD.PUT,
self.METHOD.POST, self.METHOD.DELETE],
constants)
def test_attributeIterconstantsIdentity(self):
"""
The constants returned from L{Names.iterconstants} are identical to the
constants accessible using attributes.
"""
constants = list(self.METHOD.iterconstants())
self.assertIdentical(self.METHOD.GET, constants[0])
self.assertIdentical(self.METHOD.PUT, constants[1])
self.assertIdentical(self.METHOD.POST, constants[2])
self.assertIdentical(self.METHOD.DELETE, constants[3])
def test_iterconstantsIdentity(self):
"""
The constants returned from L{Names.iterconstants} are identical on each
call to that method.
"""
constants = list(self.METHOD.iterconstants())
again = list(self.METHOD.iterconstants())
self.assertIdentical(again[0], constants[0])
self.assertIdentical(again[1], constants[1])
self.assertIdentical(again[2], constants[2])
self.assertIdentical(again[3], constants[3])
def test_initializedOnce(self):
"""
L{Names._enumerants} is initialized once and its value re-used on
subsequent access.
"""
first = self.METHOD._enumerants
self.METHOD.GET # Side-effects!
second = self.METHOD._enumerants
self.assertIdentical(first, second)
class ValuesTests(unittest.TestCase, _ConstantsTestsMixin):
"""
Tests for L{twisted.python.constants.Names}, a base class for containers of
related constaints with arbitrary values.
"""
def setUp(self):
"""
Create a fresh new L{Values} subclass for each unit test to use. Since
L{Values} is stateful, re-using the same subclass across test methods
makes exercising all of the implementation code paths difficult.
"""
class STATUS(Values):
OK = ValueConstant("200")
NOT_FOUND = ValueConstant("404")
self.STATUS = STATUS
def test_notInstantiable(self):
"""
A subclass of L{Values} raises C{TypeError} if an attempt is made to
instantiate it.
"""
self._notInstantiableTest("STATUS", self.STATUS)
def test_symbolicAttributes(self):
"""
Each name associated with a L{ValueConstant} instance in the definition
of a L{Values} subclass is available as an attribute on the resulting
class.
"""
self.assertTrue(hasattr(self.STATUS, "OK"))
self.assertTrue(hasattr(self.STATUS, "NOT_FOUND"))
def test_withoutOtherAttributes(self):
"""
As usual, names not defined in the class scope of a L{Values}
subclass are not available as attributes on the resulting class.
"""
self.assertFalse(hasattr(self.STATUS, "foo"))
def test_representation(self):
"""
The string representation of a constant on a L{Values} subclass includes
the name of the L{Values} subclass and the name of the constant itself.
"""
self.assertEqual("<STATUS=OK>", repr(self.STATUS.OK))
def test_lookupByName(self):
"""
Constants can be looked up by name using L{Values.lookupByName}.
"""
method = self.STATUS.lookupByName("OK")
self.assertIdentical(self.STATUS.OK, method)
def test_notLookupMissingByName(self):
"""
Names not defined with a L{ValueConstant} instance cannot be looked up
using L{Values.lookupByName}.
"""
self.assertRaises(ValueError, self.STATUS.lookupByName, "lookupByName")
self.assertRaises(ValueError, self.STATUS.lookupByName, "__init__")
self.assertRaises(ValueError, self.STATUS.lookupByName, "foo")
def test_lookupByValue(self):
"""
Constants can be looked up by their associated value, defined by the
argument passed to L{ValueConstant}, using L{Values.lookupByValue}.
"""
status = self.STATUS.lookupByValue("200")
self.assertIdentical(self.STATUS.OK, status)
def test_lookupDuplicateByValue(self):
"""
If more than one constant is associated with a particular value,
L{Values.lookupByValue} returns whichever of them is defined first.
"""
class TRANSPORT_MESSAGE(Values):
"""
Message types supported by an SSH transport.
"""
KEX_DH_GEX_REQUEST_OLD = ValueConstant(30)
KEXDH_INIT = ValueConstant(30)
self.assertIdentical(
TRANSPORT_MESSAGE.lookupByValue(30),
TRANSPORT_MESSAGE.KEX_DH_GEX_REQUEST_OLD)
def test_notLookupMissingByValue(self):
"""
L{Values.lookupByValue} raises L{ValueError} when called with a value
with which no constant is associated.
"""
self.assertRaises(ValueError, self.STATUS.lookupByValue, "OK")
self.assertRaises(ValueError, self.STATUS.lookupByValue, 200)
self.assertRaises(ValueError, self.STATUS.lookupByValue, "200.1")
def test_name(self):
"""
The C{name} attribute of one of the constants gives that constant's
name.
"""
self.assertEqual("OK", self.STATUS.OK.name)
def test_attributeIdentity(self):
"""
Repeated access of an attribute associated with a L{ValueConstant} value
in a L{Values} subclass results in the same object.
"""
self.assertIdentical(self.STATUS.OK, self.STATUS.OK)
def test_iterconstants(self):
"""
L{Values.iterconstants} returns an iterator over all of the constants
defined in the class, in the order they were defined.
"""
constants = list(self.STATUS.iterconstants())
self.assertEqual(
[self.STATUS.OK, self.STATUS.NOT_FOUND],
constants)
def test_attributeIterconstantsIdentity(self):
"""
The constants returned from L{Values.iterconstants} are identical to the
constants accessible using attributes.
"""
constants = list(self.STATUS.iterconstants())
self.assertIdentical(self.STATUS.OK, constants[0])
self.assertIdentical(self.STATUS.NOT_FOUND, constants[1])
def test_iterconstantsIdentity(self):
"""
The constants returned from L{Values.iterconstants} are identical on
each call to that method.
"""
constants = list(self.STATUS.iterconstants())
again = list(self.STATUS.iterconstants())
self.assertIdentical(again[0], constants[0])
self.assertIdentical(again[1], constants[1])
def test_initializedOnce(self):
"""
L{Values._enumerants} is initialized once and its value re-used on
subsequent access.
"""
first = self.STATUS._enumerants
self.STATUS.OK # Side-effects!
second = self.STATUS._enumerants
self.assertIdentical(first, second)
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