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#
# Copyright 2015 Red Hat, Inc.
#
# SPDX-License-Identifier: Apache-2.0
import ast
from unittest import mock
import sys
import testtools
from bandit.core import context
def make_str(s):
if sys.version_info >= (3, 14):
return ast.Constant(s)
return ast.Str(s)
def make_num(n):
if sys.version_info >= (3, 14):
return ast.Constant(n)
return ast.Num(n)
def make_bytes(b):
if sys.version_info >= (3, 14):
return ast.Constant(b)
return ast.Bytes(b)
def literal_value(node):
"""Return the actual value of an AST literal node, handling Python 3.14+"""
if isinstance(node, ast.Constant):
return node.value
if hasattr(ast, "Num") and isinstance(node, ast.Num):
return node.n
if hasattr(ast, "Str") and isinstance(node, ast.Str):
return node.s
if hasattr(ast, "Bytes") and isinstance(node, ast.Bytes):
return node.s
if hasattr(ast, "NameConstant") and isinstance(node, ast.NameConstant):
return node.value
if isinstance(node, ast.Name):
return node.id
return None
class ContextTests(testtools.TestCase):
def test_context_create(self):
ref_context = mock.Mock()
new_context = context.Context(context_object=ref_context)
self.assertEqual(ref_context, new_context._context)
new_context = context.Context()
self.assertIsInstance(new_context._context, dict)
def test_repr(self):
ref_object = dict(spam="eggs")
expected_repr = f"<Context {ref_object}>"
new_context = context.Context(context_object=ref_object)
self.assertEqual(expected_repr, repr(new_context))
@mock.patch("bandit.core.context.Context._get_literal_value")
def test_call_args(self, get_literal_value):
get_literal_value.return_value = "eggs"
ref_call = mock.Mock()
ref_call.args = [mock.Mock(attr="spam"), "eggs"]
ref_context = dict(call=ref_call)
new_context = context.Context(context_object=ref_context)
expected_args = ["spam", "eggs"]
self.assertListEqual(expected_args, new_context.call_args)
def test_call_args_count(self):
ref_call = mock.Mock()
ref_call.args = ["spam", "eggs"]
ref_context = dict(call=ref_call)
new_context = context.Context(context_object=ref_context)
self.assertEqual(len(ref_call.args), new_context.call_args_count)
ref_context = dict(call={})
new_context = context.Context(context_object=ref_context)
self.assertIsNone(new_context.call_args_count)
new_context = context.Context()
self.assertIsNone(new_context.call_args_count)
def test_call_function_name(self):
expected_string = "spam"
ref_context = dict(name=expected_string)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_string, new_context.call_function_name)
new_context = context.Context()
self.assertIsNone(new_context.call_function_name)
def test_call_function_name_qual(self):
expected_string = "spam"
ref_context = dict(qualname=expected_string)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_string, new_context.call_function_name_qual)
new_context = context.Context()
self.assertIsNone(new_context.call_function_name_qual)
@mock.patch("bandit.core.context.Context._get_literal_value")
def test_call_keywords(self, get_literal_value):
get_literal_value.return_value = "eggs"
ref_keyword1 = mock.Mock(arg="arg1", value=mock.Mock(attr="spam"))
ref_keyword2 = mock.Mock(arg="arg2", value="eggs")
ref_call = mock.Mock()
ref_call.keywords = [ref_keyword1, ref_keyword2]
ref_context = dict(call=ref_call)
new_context = context.Context(context_object=ref_context)
expected_dict = dict(arg1="spam", arg2="eggs")
self.assertDictEqual(expected_dict, new_context.call_keywords)
ref_context = dict(call=None)
new_context = context.Context(context_object=ref_context)
self.assertIsNone(new_context.call_keywords)
new_context = context.Context()
self.assertIsNone(new_context.call_keywords)
def test_node(self):
expected_node = "spam"
ref_context = dict(node=expected_node)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_node, new_context.node)
new_context = context.Context()
self.assertIsNone(new_context.node)
def test_string_val(self):
expected_string = "spam"
ref_context = dict(str=expected_string)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_string, new_context.string_val)
new_context = context.Context()
self.assertIsNone(new_context.string_val)
def test_statement(self):
expected_string = "spam"
ref_context = dict(statement=expected_string)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_string, new_context.statement)
new_context = context.Context()
self.assertIsNone(new_context.statement)
@mock.patch("bandit.core.utils.get_qual_attr")
def test_function_def_defaults_qual(self, get_qual_attr):
get_qual_attr.return_value = "spam"
ref_node = mock.Mock(args=mock.Mock(defaults=["spam"]))
ref_context = dict(node=ref_node, import_aliases=None)
new_context = context.Context(context_object=ref_context)
self.assertListEqual(["spam"], new_context.function_def_defaults_qual)
ref_node = mock.Mock(args=mock.Mock(defaults=[]))
ref_context = dict(node=ref_node, import_aliases=None)
new_context = context.Context(context_object=ref_context)
self.assertListEqual([], new_context.function_def_defaults_qual)
new_context = context.Context()
self.assertListEqual([], new_context.function_def_defaults_qual)
def test__get_literal_value(self):
new_context = context.Context()
value = make_num(42)
expected = literal_value(value)
self.assertEqual(expected, new_context._get_literal_value(value))
value = make_str("spam")
expected = literal_value(value)
self.assertEqual(expected, new_context._get_literal_value(value))
value = ast.List([make_str("spam"), make_num(42)], ast.Load())
expected = [literal_value(x) for x in value.elts]
self.assertListEqual(expected, new_context._get_literal_value(value))
value = ast.Tuple([make_str("spam"), make_num(42)], ast.Load())
expected = tuple(literal_value(x) for x in value.elts)
self.assertTupleEqual(expected, new_context._get_literal_value(value))
value = ast.Set([make_str("spam"), make_num(42)])
expected = {literal_value(x) for x in value.elts}
self.assertSetEqual(expected, new_context._get_literal_value(value))
value = ast.Dict([make_str("spam"), make_str("eggs")],
[make_num(42), make_str("foo")])
expected = {literal_value(k): literal_value(v) for k, v in zip(value.keys, value.values)}
self.assertDictEqual(expected, new_context._get_literal_value(value))
if sys.version_info >= (3, 14):
value = ast.Constant(Ellipsis)
else:
value = ast.Ellipsis()
self.assertEqual(None, new_context._get_literal_value(value))
value = ast.Name("spam", ast.Load())
expected = literal_value(value)
self.assertEqual(expected, new_context._get_literal_value(value))
value = make_bytes(b"spam")
expected = literal_value(value)
self.assertEqual(expected, new_context._get_literal_value(value))
self.assertIsNone(new_context._get_literal_value(None))
@mock.patch(
"bandit.core.context.Context.call_keywords",
new_callable=mock.PropertyMock,
)
def test_check_call_arg_value(self, call_keywords):
new_context = context.Context()
call_keywords.return_value = dict(spam="eggs")
self.assertTrue(new_context.check_call_arg_value("spam", "eggs"))
self.assertTrue(
new_context.check_call_arg_value("spam", ["spam", "eggs"])
)
self.assertFalse(new_context.check_call_arg_value("spam", "spam"))
self.assertFalse(new_context.check_call_arg_value("spam"))
self.assertFalse(new_context.check_call_arg_value("eggs"))
new_context = context.Context()
self.assertIsNone(new_context.check_call_arg_value(None))
@mock.patch(
"bandit.core.context.Context.node", new_callable=mock.PropertyMock
)
def test_get_lineno_for_call_arg(self, node):
expected_lineno = 42
keyword1 = mock.Mock(
arg="spam", value=mock.Mock(lineno=expected_lineno)
)
node.return_value = mock.Mock(keywords=[keyword1])
new_context = context.Context()
actual_lineno = new_context.get_lineno_for_call_arg("spam")
self.assertEqual(expected_lineno, actual_lineno)
new_context = context.Context()
missing_lineno = new_context.get_lineno_for_call_arg("eggs")
self.assertIsNone(missing_lineno)
def test_get_call_arg_at_position(self):
expected_arg = "spam"
ref_call = mock.Mock()
ref_call.args = [make_str(expected_arg)]
ref_context = dict(call=ref_call)
new_context = context.Context(context_object=ref_context)
self.assertEqual(expected_arg, new_context.get_call_arg_at_position(0))
self.assertIsNone(new_context.get_call_arg_at_position(1))
ref_call = mock.Mock()
ref_call.args = []
ref_context = dict(call=ref_call)
new_context = context.Context(context_object=ref_context)
self.assertIsNone(new_context.get_call_arg_at_position(0))
new_context = context.Context()
self.assertIsNone(new_context.get_call_arg_at_position(0))
def test_is_module_being_imported(self):
ref_context = dict(module="spam")
new_context = context.Context(context_object=ref_context)
self.assertTrue(new_context.is_module_being_imported("spam"))
self.assertFalse(new_context.is_module_being_imported("eggs"))
new_context = context.Context()
self.assertFalse(new_context.is_module_being_imported("spam"))
def test_is_module_imported_exact(self):
ref_context = dict(imports=["spam"])
new_context = context.Context(context_object=ref_context)
self.assertTrue(new_context.is_module_imported_exact("spam"))
self.assertFalse(new_context.is_module_imported_exact("eggs"))
new_context = context.Context()
self.assertFalse(new_context.is_module_being_imported("spam"))
def test_is_module_imported_like(self):
ref_context = dict(imports=[["spam"], ["eggs"]])
new_context = context.Context(context_object=ref_context)
self.assertTrue(new_context.is_module_imported_like("spam"))
self.assertFalse(new_context.is_module_imported_like("bacon"))
new_context = context.Context()
self.assertFalse(new_context.is_module_imported_like("spam"))
def test_filename(self):
ref_context = dict(filename="spam.py")
new_context = context.Context(context_object=ref_context)
self.assertEqual(new_context.filename, "spam.py")
new_context = context.Context()
self.assertIsNone(new_context.filename)
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