61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
# Copyright (c) 2013-2014 Google, Inc.
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# Copyright (c) 2015-2016 Cara Vinson <ceridwenv@gmail.com>
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# Copyright (c) 2015-2016 Claudiu Popa <pcmanticore@gmail.com>
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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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from astroid import nodes
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from astroid import util
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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:
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util.reraise(ValueError('%s is not a correct version : should be X.Y[.Z].' % string))
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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(self, *args, **kwargs):
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if minver is not None:
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self.skipTest('Needs Python > %s. Current version is %s.'
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% (minver, str_version))
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elif maxver is not None:
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self.skipTest('Needs Python <= %s. Current version is %s.'
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% (maxver, str_version))
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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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