def visit_Call(self, node: ast.Call) -> None:
if get_qualname(node.func) in _PATCH_NAMES:
# attributes are (target, new, ...)
self._check_patch_call(node, 1)
if get_qualname(node.func) in _PATCH_OBJECT_NAMES:
# attributes are (target, attribute, new, ...)
self._check_patch_call(node, 2)
def _check_fixture_addfinalizer(self, node: AnyFunctionDef) -> None:
"""Checks for PT021."""
if 'request' not in get_all_argument_names(node.args):
return
for child in walk_without_nested_functions(node): # pragma: no branch
if (isinstance(child, ast.Call)
and get_qualname(child.func) == 'request.addfinalizer'):
self.error_from_node(FixtureFinalizerCallback, child)
return
def _check_raises_call(self, node: ast.Call) -> None:
"""
Checks for violations regarding `pytest.raises` call args (PT010 and PT011).
"""
args = get_simple_call_args(node)
exception = args.get_argument('expected_exception', position=0)
if not exception:
self.error_from_node(RaisesWithoutException, node)
return
exception_name = get_qualname(exception)
if exception_name not in self.config.raises_require_match_for:
return
match = args.get_argument('match')
if match is None or is_none(match) or is_empty_string(match):
self.error_from_node(RaisesWithoutMatch, node, exception=exception_name)