Files
sigma-rules/tests/base.py
T
eric-forte-elastic 6449cecd08 [FR] Add support for building block rules (BBR) (#2822)
* added test bbr

* initial implementation

* Added Unit test and exempted bbr from integrations

* fixed linting

* Add schema validation to building block rules

* add separate error messages

* fixed linting

* Add testing bbr validation

* fixed linting

* Add default values

* fixed linting

* added defaults

* fixed linting

* cleaned up test rule

* removed .gitkeep

* read .gitkeep

* Switch to using validates_schema

* addressing some linting

* fixed linting

* Update detection_rules/schemas/definitions.py

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* add env variable check

* fix skip function

* updated name

* Update detection_rules/schemas/definitions.py

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Add bbr validation unit test

* Clean up comments

* fix linting

* Move convert time to utils

* Moved to rules_building_block

* Add check for only bbr in bbr dir

* fix linting

* additional linting fix

* Changed to bbr rule loader

* fixed bbr default

* Updated error messages and README

* fixed more linting

* Updating root level README

* Fixed convert_time_span calls

* fixed typo in unit test logic and updated txt

* fixed error message

* updated comment for clarity

* Update detection_rules/rule.py

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Update detection_rules/rule.py

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>

* Updated validation methods for clarity

* fix doctring location

* Fixed typo

* updated error messages.

* removed excess whitespace

* Add per rule bypass

* Add single rule bypass

* Split unit tests

* Update detection_rules/rule.py

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>

* Update detection_rules/rule.py

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>

---------

Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
2023-06-20 09:00:30 -04:00

76 lines
2.4 KiB
Python

# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
# or more contributor license agreements. Licensed under the Elastic License
# 2.0; you may not use this file except in compliance with the Elastic License
# 2.0.
"""Shared resources for tests."""
import unittest
from functools import lru_cache
from typing import Union
from detection_rules.rule import TOMLRule
from detection_rules.rule_loader import DeprecatedCollection, DeprecatedRule, RuleCollection, production_filter
RULE_LOADER_FAIL = False
RULE_LOADER_FAIL_MSG = None
RULE_LOADER_FAIL_RAISED = False
@lru_cache
def default_rules() -> RuleCollection:
return RuleCollection.default()
@lru_cache
def default_bbr() -> RuleCollection:
return RuleCollection.default_bbr()
class BaseRuleTest(unittest.TestCase):
"""Base class for shared test cases which need to load rules"""
RULE_LOADER_FAIL = False
RULE_LOADER_FAIL_MSG = None
RULE_LOADER_FAIL_RAISED = False
@classmethod
def setUpClass(cls):
global RULE_LOADER_FAIL, RULE_LOADER_FAIL_MSG
# too noisy; refactor
# os.environ["DR_NOTIFY_INTEGRATION_UPDATE_AVAILABLE"] = "1"
if not RULE_LOADER_FAIL:
try:
rc = default_rules()
rc_bbr = default_bbr()
cls.all_rules = rc.rules
cls.rule_lookup = rc.id_map
cls.production_rules = rc.filter(production_filter)
cls.bbr = rc_bbr.rules
cls.deprecated_rules: DeprecatedCollection = rc.deprecated
except Exception as e:
RULE_LOADER_FAIL = True
RULE_LOADER_FAIL_MSG = str(e)
@staticmethod
def rule_str(rule: Union[DeprecatedRule, TOMLRule], trailer=' ->') -> str:
return f'{rule.id} - {rule.name}{trailer or ""}'
def setUp(self) -> None:
global RULE_LOADER_FAIL, RULE_LOADER_FAIL_MSG, RULE_LOADER_FAIL_RAISED
if RULE_LOADER_FAIL:
# limit the loader failure to just one run
# raise a dedicated test failure for the loader
if not RULE_LOADER_FAIL_RAISED:
RULE_LOADER_FAIL_RAISED = True
with self.subTest('Test that the rule loader loaded with no validation or other failures.'):
self.fail(f'Rule loader failure: \n{RULE_LOADER_FAIL_MSG}')
self.skipTest('Rule loader failure')
else:
super().setUp()