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74 lines
2.3 KiB
Python
74 lines
2.3 KiB
Python
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# Copyright (c) 2013-2014 Google, Inc.
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# Copyright (c) 2014 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
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# Copyright (c) 2015-2016, 2018-2019 Claudiu Popa <pcmanticore@gmail.com>
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# Copyright (c) 2015-2016 Ceridwen <ceridwenv@gmail.com>
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# Copyright (c) 2016 Jakub Wilk <jwilk@jwilk.net>
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# Copyright (c) 2018 Anthony Sottile <asottile@umich.edu>
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# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
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# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER
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"""Utility functions for test code that uses astroid ASTs as input."""
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import contextlib
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import functools
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import sys
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import warnings
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import pytest
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from astroid import nodes
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def require_version(minver=None, maxver=None):
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""" Compare version of python interpreter to the given one. Skip the test
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if older.
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"""
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def parse(string, default=None):
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string = string or default
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try:
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return tuple(int(v) for v in string.split("."))
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except ValueError as exc:
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raise ValueError(
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"{string} is not a correct version : should be X.Y[.Z].".format(
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string=string
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)
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) from exc
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def check_require_version(f):
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current = sys.version_info[:3]
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if parse(minver, "0") < current <= parse(maxver, "4"):
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return f
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str_version = ".".join(str(v) for v in sys.version_info)
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@functools.wraps(f)
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def new_f(*args, **kwargs):
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if minver is not None:
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pytest.skip(
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"Needs Python > %s. Current version is %s." % (minver, str_version)
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)
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elif maxver is not None:
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pytest.skip(
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"Needs Python <= %s. Current version is %s." % (maxver, str_version)
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)
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return new_f
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return check_require_version
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def get_name_node(start_from, name, index=0):
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return [n for n in start_from.nodes_of_class(nodes.Name) if n.name == name][index]
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@contextlib.contextmanager
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def enable_warning(warning):
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warnings.simplefilter("always", warning)
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try:
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yield
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finally:
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# Reset it to default value, so it will take
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# into account the values from the -W flag.
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warnings.simplefilter("default", warning)
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