139 lines
3.6 KiB
Python
139 lines
3.6 KiB
Python
# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Tests for L{twisted.python._inotify}.
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"""
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from twisted.python.filepath import FilePath
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from twisted.python.runtime import platform
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from twisted.trial.unittest import TestCase
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try:
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from twisted.python import _inotify
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except ImportError:
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inotify = None
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else:
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inotify = _inotify
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if inotify and platform.supportsINotify():
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from ctypes import c_char_p, c_int, c_uint32
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from twisted.python._inotify import INotifyError, add, init, initializeModule
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else:
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inotify = None
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class INotifyTests(TestCase):
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"""
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Tests for L{twisted.python._inotify}.
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"""
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if inotify is None:
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skip = "This platform doesn't support INotify."
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def test_missingInit(self):
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"""
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If the I{libc} object passed to L{initializeModule} has no
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C{inotify_init} attribute, L{ImportError} is raised.
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"""
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class libc:
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def inotify_add_watch(self):
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pass
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def inotify_rm_watch(self):
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pass
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self.assertRaises(ImportError, initializeModule, libc())
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def test_missingAdd(self):
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"""
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If the I{libc} object passed to L{initializeModule} has no
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C{inotify_add_watch} attribute, L{ImportError} is raised.
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"""
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class libc:
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def inotify_init(self):
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pass
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def inotify_rm_watch(self):
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pass
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self.assertRaises(ImportError, initializeModule, libc())
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def test_missingRemove(self):
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"""
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If the I{libc} object passed to L{initializeModule} has no
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C{inotify_rm_watch} attribute, L{ImportError} is raised.
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"""
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class libc:
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def inotify_init(self):
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pass
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def inotify_add_watch(self):
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pass
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self.assertRaises(ImportError, initializeModule, libc())
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def test_setTypes(self):
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"""
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If the I{libc} object passed to L{initializeModule} has all of the
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necessary attributes, it sets the C{argtypes} and C{restype} attributes
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of the three ctypes methods used from libc.
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"""
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class libc:
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def inotify_init(self):
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pass
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inotify_init = staticmethod(inotify_init)
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def inotify_rm_watch(self):
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pass
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inotify_rm_watch = staticmethod(inotify_rm_watch)
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def inotify_add_watch(self):
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pass
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inotify_add_watch = staticmethod(inotify_add_watch)
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c = libc()
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initializeModule(c)
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self.assertEqual(c.inotify_init.argtypes, [])
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self.assertEqual(c.inotify_init.restype, c_int)
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self.assertEqual(c.inotify_rm_watch.argtypes, [c_int, c_int])
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self.assertEqual(c.inotify_rm_watch.restype, c_int)
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self.assertEqual(c.inotify_add_watch.argtypes, [c_int, c_char_p, c_uint32])
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self.assertEqual(c.inotify_add_watch.restype, c_int)
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def test_failedInit(self):
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"""
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If C{inotify_init} returns a negative number, L{init} raises
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L{INotifyError}.
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"""
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class libc:
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def inotify_init(self):
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return -1
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self.patch(inotify, "libc", libc())
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self.assertRaises(INotifyError, init)
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def test_failedAddWatch(self):
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"""
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If C{inotify_add_watch} returns a negative number, L{add}
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raises L{INotifyError}.
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"""
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class libc:
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def inotify_add_watch(self, fd, path, mask):
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return -1
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self.patch(inotify, "libc", libc())
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self.assertRaises(INotifyError, add, 3, FilePath("/foo"), 0)
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