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Tests for L{twisted.python.runtime}.
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Tests the shortPythonVersion method.
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Verify if the Python version is returned correctly.
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Tests for the default L{Platform} initializer.
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L{Platform.isKnown} returns a boolean indicating whether this is one of
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Verify consistency of L{Platform.isVista}: it can only be C{True} if
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L{Platform.isMacOSX} can only return C{True} if L{Platform.getType}
returns C{'posix'}.
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L{Platform.isLinux} can only return C{True} if L{Platform.getType}
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L{Platform.isWinNT} is deprecated in favor of L{platform.isWindows}.
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L{Platform.supportsThreads} returns C{True} if threads can be created in
this runtime, C{False} otherwise.
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Tests for L{Platform} based overridden initializer values.
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If an operating system name is supplied to L{Platform}'s initializer,
L{Platform.getType} returns the platform type which corresponds to that
name.
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If a system platform name is supplied to L{Platform}'s initializer, it
is used to determine the result of L{Platform.isMacOSX}, which returns
C{True} for C{"darwin"}, C{False} otherwise.
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If a system platform name is supplied to L{Platform}'s initializer, it
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Tests for L{twisted.python.runtime.Platform.isDocker}.
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If the platform is not Linux, C{isDocker()} always returns L{False}.
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If the platform is Linux, and the cgroups file in C{/proc} does not
exist, C{isDocker()} returns L{False}
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If the platform is Linux, and the cgroups file (faked out here) exists,
and one of the paths starts with C{/docker/}, C{isDocker()} returns
C{True}.
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6:freezer:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35f
5:devices:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35f
4:blkio:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35f
3:cpuacct:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35f
2:cpu:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35f
1:cpuset:/docker/104155a6453cb67590027e397dc90fc25a06a7508403c797bc89ea43adf8d35fNr' rE )�mktemp�open�writer r rC �r Z cgroupsFile�fr r r r �test_cgroupsSuggestsDocker� s
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If the platform is Linux, and the cgroups file (faked out here) exists,
and none of the paths starts with C{/docker/}, C{isDocker()} returns
C{False}.
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