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Tests for L{twisted.python._inotify}.
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Tests for L{twisted.python._inotify}.
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If the I{libc} object passed to L{initializeModule} has no
C{inotify_init} attribute, L{ImportError} is raised.
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If the I{libc} object passed to L{initializeModule} has no
C{inotify_add_watch} attribute, L{ImportError} is raised.
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If the I{libc} object passed to L{initializeModule} has no
C{inotify_rm_watch} attribute, L{ImportError} is raised.
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If the I{libc} object passed to L{initializeModule} has all of the
necessary attributes, it sets the C{argtypes} and C{restype} attributes
of the three ctypes methods used from libc.
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If C{inotify_init} returns a negative number, L{init} raises
L{INotifyError}.
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If C{inotify_add_watch} returns a negative number, L{add}
raises L{INotifyError}.
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