36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
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# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Hypothesis strategies for values related to L{twisted.python}.
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"""
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from hypothesis.strategies import SearchStrategy, characters, text
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from typing_extensions import Literal
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def systemdDescriptorNames() -> SearchStrategy[str]:
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"""
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Build strings that are legal values for the systemd
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I{FileDescriptorName} field.
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"""
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# systemd.socket(5) says:
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#
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# > Names may contain any ASCII character, but must exclude control
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# > characters and ":", and must be at most 255 characters in length.
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control_characters: Literal["Cc"] = "Cc"
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return text(
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# The docs don't say there is a min size so I'm guessing...
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min_size=1,
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max_size=255,
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alphabet=characters(
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# These constraints restrict us to ASCII.
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min_codepoint=0,
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max_codepoint=127,
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# This one excludes control characters.
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blacklist_categories=(control_characters,),
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# And this excludes the separator.
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blacklist_characters=(":",),
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),
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)
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