Files
sigma-rules/tests/kuery/test_parser.py
T
Justin Ibarra 582a842e32 [KQL] Add support for date fields in parser (#1487)
* [KQL] Add support for date fields in parser

* add test for parsing date value
2021-09-16 09:25:26 -08:00

88 lines
3.6 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.
import unittest
import kql
from kql.ast import (
Field,
FieldComparison,
FieldRange,
String,
Number,
Exists,
)
class ParserTests(unittest.TestCase):
def validate(self, source, tree, *args, **kwargs):
kwargs.setdefault("optimize", False)
self.assertEqual(kql.parse(source, *args, **kwargs), tree)
def test_keyword(self):
schema = {
"a.text": "text",
"a.keyword": "keyword",
"b": "long",
}
self.validate('a.text:hello', FieldComparison(Field("a.text"), String("hello")), schema=schema)
self.validate('a.keyword:hello', FieldComparison(Field("a.keyword"), String("hello")), schema=schema)
self.validate('a.text:"hello"', FieldComparison(Field("a.text"), String("hello")), schema=schema)
self.validate('a.keyword:"hello"', FieldComparison(Field("a.keyword"), String("hello")), schema=schema)
self.validate('a.text:1', FieldComparison(Field("a.text"), String("1")), schema=schema)
self.validate('a.keyword:1', FieldComparison(Field("a.keyword"), String("1")), schema=schema)
self.validate('a.text:"1"', FieldComparison(Field("a.text"), String("1")), schema=schema)
self.validate('a.keyword:"1"', FieldComparison(Field("a.keyword"), String("1")), schema=schema)
def test_conversion(self):
schema = {"num": "long", "text": "text"}
self.validate('num:1', FieldComparison(Field("num"), Number(1)), schema=schema)
self.validate('num:"1"', FieldComparison(Field("num"), Number(1)), schema=schema)
self.validate('text:1', FieldComparison(Field("text"), String("1")), schema=schema)
self.validate('text:"1"', FieldComparison(Field("text"), String("1")), schema=schema)
def test_list_equals(self):
self.assertEqual(kql.parse("a:(1 or 2)", optimize=False), kql.parse("a:(2 or 1)", optimize=False))
def test_number_exists(self):
self.assertEqual(kql.parse("foo:*", schema={"foo": "long"}), FieldComparison(Field("foo"), Exists()))
def test_multiple_types_success(self):
schema = {"common.a": "keyword", "common.b": "keyword"}
self.validate("common.* : \"hello\"", FieldComparison(Field("common.*"), String("hello")), schema=schema)
def test_multiple_types_fail(self):
with self.assertRaises(kql.KqlParseError):
kql.parse("common.* : \"hello\"", schema={"common.a": "keyword", "common.b": "ip"})
def test_number_wildcard_fail(self):
with self.assertRaises(kql.KqlParseError):
kql.parse("foo:*wc", schema={"foo": "long"})
with self.assertRaises(kql.KqlParseError):
kql.parse("foo:wc*", schema={"foo": "long"})
def test_type_family_success(self):
kql.parse("abc : 1.2345", schema={"abc": "scaled_float"})
kql.parse("abc : hello", schema={"abc": "annotated-text"})
kql.parse("abc >= now-30d", schema={"abc": "date_nanos"})
def test_type_family_fail(self):
with self.assertRaises(kql.KqlParseError):
kql.parse('foo : "hello world"', schema={"foo": "scaled_float"})
def test_date(self):
schema = {"@time": "date"}
self.validate('@time <= now-10d', FieldRange(Field("@time"), "<=", String("now-10d")), schema=schema)
with self.assertRaises(kql.KqlParseError):
kql.parse("@time > 5", schema=schema)