mirror of https://github.com/mongodb/mongo
97 lines
4.4 KiB
JavaScript
97 lines
4.4 KiB
JavaScript
/**
|
|
* Tests to validate limits for $regexFind, $regexFindAll and $regexMatch aggregation expressions.
|
|
* @tags: [
|
|
* # TODO SERVER-93378 investigate why this test is significantly slower with TSAN.
|
|
* tsan_incompatible,
|
|
* ]
|
|
*/
|
|
import "jstests/libs/query/sbe_assert_error_override.js";
|
|
|
|
import {assertErrorCode} from "jstests/aggregation/extras/utils.js";
|
|
|
|
const coll = db.regex_expr_limit;
|
|
coll.drop();
|
|
assert.commandWorked(coll.insert({z: "c".repeat(25000) + "d".repeat(25000) + "e"}));
|
|
|
|
function testRegexAgg(inputObj, expectedOutputForFindAll) {
|
|
const resultFindAll = coll.aggregate([{"$project": {_id: 0, "matches": {"$regexFindAll": inputObj}}}]).toArray();
|
|
assert.eq(resultFindAll, [{"matches": expectedOutputForFindAll}]);
|
|
|
|
const resultFind = coll.aggregate([{"$project": {_id: 0, "matches": {"$regexFind": inputObj}}}]).toArray();
|
|
assert.eq(resultFind, [{"matches": expectedOutputForFindAll.length == 0 ? null : expectedOutputForFindAll[0]}]);
|
|
|
|
const resultMatch = coll.aggregate([{"$project": {_id: 0, "matches": {"$regexMatch": inputObj}}}]).toArray();
|
|
assert.eq(resultMatch, [{"matches": expectedOutputForFindAll.length != 0}]);
|
|
}
|
|
|
|
function testRegexAggException(inputObj, exceptionCode, expression) {
|
|
// If expression is defined, run tests only against that expression.
|
|
if (expression != undefined) {
|
|
assertErrorCode(coll, [{"$project": {"matches": {[expression]: inputObj}}}], exceptionCode);
|
|
return;
|
|
}
|
|
assertErrorCode(coll, [{"$project": {"matches": {"$regexFindAll": inputObj}}}], exceptionCode);
|
|
assertErrorCode(coll, [{"$project": {"matches": {"$regexFind": inputObj}}}], exceptionCode);
|
|
assertErrorCode(coll, [{"$project": {"matches": {"$regexMatch": inputObj}}}], exceptionCode);
|
|
}
|
|
|
|
(function testLongRegex() {
|
|
// The maximum allowed pattern length is 16384 before SERVER-86326, and 32764 with it.
|
|
// Using a limit of 16384 should work across all versions in multiversion tests.
|
|
const kMaxRegexPatternLen = 16384;
|
|
const patternMaxLen = "c".repeat(kMaxRegexPatternLen - 1);
|
|
const anchoredPatternMaxLen = "^" + patternMaxLen;
|
|
|
|
// Test that a regex with maximum allowable pattern length can find a document.
|
|
testRegexAgg({input: "$z", regex: anchoredPatternMaxLen}, [{match: patternMaxLen, "idx": 0, "captures": []}]);
|
|
|
|
// Test that a regex pattern exceeding the limit fails. A pattern length of 32765 is
|
|
// disallowed in all versions in multiversion tests.
|
|
const patternTooLong = "c".repeat(32765);
|
|
testRegexAggException({input: "$z", regex: patternTooLong}, 51111);
|
|
})();
|
|
|
|
(function testBufferOverflow() {
|
|
// $regexFindAll will match each character individually, when the pattern is empty. If there
|
|
// are 'n' characters in the input, it would result to 'n' individual matches. If the
|
|
// pattern further has 'k' capture groups, then the output document will have 'n * k'
|
|
// sub-strings representing the captures.
|
|
const pattern = "(".repeat(150) + ")".repeat(150) + "(".repeat(150) + ")".repeat(150);
|
|
// If the intermediate document size exceeds BufferMaxSize at any point, we will stop further
|
|
// evaluation and throw an error.
|
|
testRegexAggException({input: "$z", regex: pattern}, 51151, "$regexFindAll");
|
|
|
|
const pattern2 = "()".repeat(300);
|
|
testRegexAggException({input: "$z", regex: pattern2}, 51151, "$regexFindAll");
|
|
})();
|
|
|
|
(function testNumberOfCaptureGroupLimit() {
|
|
const allowedCaptureGroups = 250;
|
|
let pattern = "(d)".repeat(allowedCaptureGroups) + "e";
|
|
const expectedOutputCaptures = new Array(allowedCaptureGroups).fill("d");
|
|
|
|
testRegexAgg({input: "$z", regex: pattern}, [
|
|
{
|
|
match: "d".repeat(allowedCaptureGroups) + "e",
|
|
"idx": 49750,
|
|
"captures": expectedOutputCaptures,
|
|
},
|
|
]);
|
|
})();
|
|
|
|
(function testMaxCaptureDepth() {
|
|
const kMaxCaptureDepthLen = 250;
|
|
// Create a pattern with 250 depth captures of the format '(((((...e...))))'.
|
|
const patternMaxDepth = "(".repeat(kMaxCaptureDepthLen) + "e" + ")".repeat(kMaxCaptureDepthLen);
|
|
const expectedOutputCaptures = new Array(kMaxCaptureDepthLen).fill("e");
|
|
|
|
// Test that there is a match.
|
|
testRegexAgg({input: "$z", regex: patternMaxDepth}, [
|
|
{match: "e", "idx": 50000, "captures": expectedOutputCaptures},
|
|
]);
|
|
|
|
// Add one more and verify that regex expression throws an error.
|
|
const patternTooLong = "(" + patternMaxDepth + ")";
|
|
testRegexAggException({input: "$z", regex: patternTooLong}, 51111);
|
|
})();
|