def test_oldPython(self):
"""
L{_checkRequirements} raises L{ImportError} when run on a version of
Python that is too old.
"""
sys.version_info = self.unsupportedPythonVersion
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual("Twisted requires Python %d.%d or later." % self.supportedPythonVersion, str(raised.exception))
def test_oldPythonPy3(self):
"""
L{_checkRequirements} raises L{ImportError} when run on a version of
Python that is too old.
"""
sys.version_info = self.Py3unsupportedPythonVersion
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted on Python 3 requires Python %d.%d or later." %
self.Py3supportedPythonVersion, str(raised.exception))
def test_oldZopeInterface(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope.interface}
package installed is old enough that C{implementer_only} is not included
(added in zope.interface 3.6).
"""
with SetAsideModule("zope"):
_install(_zope35)
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual("Twisted requires zope.interface 3.6.0 or later.", str(raised.exception))
def test_oldZopeInterface(self):
"""
If the installed version of C{zope.interface} does not support the
C{implementer} class decorator, L{_checkRequirements} raises
L{ImportError} with a message explaining a newer version is
required.
"""
with SetAsideModule("zope"):
_install(_zope38)
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual("Twisted requires zope.interface 4.0.0 or later.", str(raised.exception))
def test_setupNoCheckRequirements(self):
"""
L{_checkRequirements} doesn't check for C{zope.interface} compliance
when C{setuptools._TWISTED_NO_CHECK_REQUIREMENTS} is set.
"""
with SetAsideModule("setuptools"):
setuptools = ModuleType("setuptools")
setuptools._TWISTED_NO_CHECK_REQUIREMENTS = True
sys.modules["setuptools"] = setuptools
with SetAsideModule("zope"):
sys.modules["zope"] = None
_checkRequirements()
def test_setupNoCheckRequirements(self):
"""
L{_checkRequirements} doesn't check for C{zope.interface} compliance
when C{setuptools._TWISTED_NO_CHECK_REQUIREMENTS} is set.
"""
with SetAsideModule("setuptools"):
setuptools = ModuleType("setuptools")
setuptools._TWISTED_NO_CHECK_REQUIREMENTS = True
sys.modules["setuptools"] = setuptools
with SetAsideModule("zope"):
sys.modules["zope"] = None
_checkRequirements()
def test_oldZopeInterface(self):
"""
If the installed version of C{zope.interface} does not support the
C{implementer} class decorator, L{_checkRequirements} raises
L{ImportError} with a message explaining a newer version is
required.
"""
with SetAsideModule("zope"):
_install(_zope38)
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual("Twisted requires zope.interface 4.0.0 or later.",
str(raised.exception))
def test_oldZopeInterface(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope.interface}
package installed is old enough that C{implementer_only} is not included
(added in zope.interface 3.6).
"""
with SetAsideModule("zope"):
_install(_zope35)
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted requires zope.interface 3.6.0 or later.",
str(raised.exception))
def test_missingZopeInterface(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope.interface}
package is not installed.
"""
with SetAsideModule("zope"):
# Create a minimal module to represent the zope namespace package,
# but don't give it an "interface" attribute.
sys.modules["zope"] = ModuleType("zope")
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted requires zope.interface %d.%d.%d or later: no module "
"named zope.interface." % self.supportedZopeInterfaceVersion,
str(raised.exception))
def test_missingZopeInterface(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope.interface}
package is not installed.
"""
with SetAsideModule("zope"):
# Create a minimal module to represent the zope namespace package,
# but don't give it an "interface" attribute.
sys.modules["zope"] = ModuleType("zope")
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted requires zope.interface %d.%d.%d or later: no module "
"named zope.interface." % self.supportedZopeInterfaceVersion,
str(raised.exception))
def test_newPython(self):
"""
L{_checkRequirements} returns L{None} when run on a version of Python
that is sufficiently new.
"""
sys.version_info = self.supportedPythonVersion
self.assertIsNone(_checkRequirements())
def test_missingZopeNamespace(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope} namespace
package is not installed.
"""
with SetAsideModule("zope"):
# After an import for a module fails, it gets a None value in
# sys.modules as a cache of that negative result. Future import
# attempts see it and fail fast without checking the system again.
sys.modules["zope"] = None
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted requires zope.interface %d.%d.%d or later: no module "
"named zope.interface." % self.supportedZopeInterfaceVersion,
str(raised.exception))
def test_newPythonPy3(self):
"""
L{_checkRequirements} returns C{None} when run on a version of Python
that is sufficiently new.
"""
sys.version_info = self.Py3supportedPythonVersion
self.assertEqual(None, _checkRequirements())
def test_newPythonPy3(self):
"""
L{_checkRequirements} returns L{None} when run on a version of Python
that is sufficiently new.
"""
sys.version_info = self.Py3supportedPythonVersion
self.assertIsNone(_checkRequirements())
def test_newPython(self):
"""
L{_checkRequirements} returns C{None} when run on a version of Python
that is sufficiently new.
"""
sys.version_info = self.supportedPythonVersion
self.assertEqual(None, _checkRequirements())
def test_missingZopeNamespace(self):
"""
L{_checkRequirements} raises L{ImportError} when the C{zope} namespace
package is not installed.
"""
with SetAsideModule("zope"):
# After an import for a module fails, it gets a None value in
# sys.modules as a cache of that negative result. Future import
# attempts see it and fail fast without checking the system again.
sys.modules["zope"] = None
with self.assertRaises(ImportError) as raised:
_checkRequirements()
self.assertEqual(
"Twisted requires zope.interface %d.%d.%d or later: no module "
"named zope.interface." % self.supportedZopeInterfaceVersion,
str(raised.exception))
def test_newZopeInterface(self):
"""
L{_checkRequirements} returns C{None} when C{zope.interface} is
installed and new enough.
"""
with SetAsideModule("zope"):
_install(_zope36)
self.assertEqual(None, _checkRequirements())
def test_newZopeInterface(self):
"""
L{_checkRequirements} returns C{None} when C{zope.interface} is
installed and new enough.
"""
with SetAsideModule("zope"):
_install(_zope36)
self.assertEqual(None, _checkRequirements())
def test_newZopeInterface(self):
"""
If the installed version of C{zope.interface} does support the
C{implementer} class decorator, L{_checkRequirements} returns
C{None}.
"""
with SetAsideModule("zope"):
_install(_zope40)
self.assertEqual(None, _checkRequirements())
def test_newZopeInterface(self):
"""
If the installed version of C{zope.interface} does support the
C{implementer} class decorator, L{_checkRequirements} returns
C{None}.
"""
with SetAsideModule("zope"):
_install(_zope40)
self.assertEqual(None, _checkRequirements())
