101 lines
2.8 KiB
Python
101 lines
2.8 KiB
Python
# Copyright (c) 2013-2014 Google, Inc.
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# Copyright (c) 2013-2016 Claudiu Popa <pcmanticore@gmail.com>
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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"""Tests for the pylint.checkers.utils module."""
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import astroid
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from pylint.checkers import utils
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import pytest
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@pytest.mark.parametrize("name,expected", [
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('min', True),
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('__builtins__', True),
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('__path__', False),
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('__file__', False),
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('whatever', False),
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('mybuiltin', False),
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])
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def testIsBuiltin(name, expected):
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assert utils.is_builtin(name) == expected
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@pytest.mark.parametrize("fn,kw", [
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('foo(3)', {'keyword': 'bar'}),
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('foo(one=a, two=b, three=c)', {'position': 1}),
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])
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def testGetArgumentFromCallError(fn, kw):
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with pytest.raises(utils.NoSuchArgumentError):
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node = astroid.extract_node(fn)
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utils.get_argument_from_call(node, **kw)
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@pytest.mark.parametrize("fn,kw", [
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('foo(bar=3)', {'keyword': 'bar'}),
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('foo(a, b, c)', {'position': 1}),
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])
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def testGetArgumentFromCallExists(fn, kw):
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node = astroid.extract_node(fn)
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assert utils.get_argument_from_call(node, **kw) is not None
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def testGetArgumentFromCall():
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node = astroid.extract_node('foo(a, not_this_one=1, this_one=2)')
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arg = utils.get_argument_from_call(node, position=2, keyword='this_one')
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assert 2 == arg.value
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node = astroid.extract_node('foo(a)')
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with pytest.raises(utils.NoSuchArgumentError):
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utils.get_argument_from_call(node, position=1)
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with pytest.raises(ValueError):
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utils.get_argument_from_call(node, None, None)
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name = utils.get_argument_from_call(node, position=0)
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assert name.name == 'a'
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def test_error_of_type():
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nodes = astroid.extract_node("""
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try: pass
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except AttributeError: #@
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pass
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try: pass
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except Exception: #@
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pass
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except: #@
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pass
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""")
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assert utils.error_of_type(nodes[0], AttributeError)
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assert utils.error_of_type(nodes[0], (AttributeError, ))
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assert not utils.error_of_type(nodes[0], Exception)
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assert utils.error_of_type(nodes[1], Exception)
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assert not utils.error_of_type(nodes[2], ImportError)
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def test_node_ignores_exception():
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nodes = astroid.extract_node("""
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try:
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1/0 #@
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except ZeroDivisionError:
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pass
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try:
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1/0 #@
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except Exception:
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pass
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try:
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2/0 #@
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except:
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pass
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try:
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1/0 #@
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except ValueError:
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pass
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""")
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assert utils.node_ignores_exception(nodes[0], ZeroDivisionError)
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assert not utils.node_ignores_exception(nodes[1], ZeroDivisionError)
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assert not utils.node_ignores_exception(nodes[2], ZeroDivisionError)
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assert not utils.node_ignores_exception(nodes[3], ZeroDivisionError)
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