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Tests for implementations of L{IReactorProcess}.
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An L{IProcessProtocol} which fires a Deferred when the process it is
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Base class for L{IReactorProcess} tests which defines some tests which
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Helper for testing L{IProcessTransport} write functionality. This
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@param write: A two-argument callable. This is invoked with a process
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L{IProcessTransport.writeToChild} raises L{KeyError} if passed a file
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If a spawned process exits, C{processExited} will be called in a
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Launch a child process, using either the C{uid} or C{gid} argument to
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