1 files changed, 65 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-querystring-maxKeys-non-finite.js b/tests/node_compat/test/parallel/test-querystring-maxKeys-non-finite.js
new file mode 100644
index 000000000..4a8c7ab0d
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-querystring-maxKeys-non-finite.js
@@ -0,0 +1,65 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+// This test was originally written to test a regression
+// that was introduced by
+// https://github.com/nodejs/node/pull/2288#issuecomment-179543894
+require('../common');
+
+const assert = require('assert');
+const parse = require('querystring').parse;
+
+// Taken from express-js/body-parser
+// https://github.com/expressjs/body-parser/blob/ed25264fb494cf0c8bc992b8257092cd4f694d5e/test/urlencoded.js#L636-L651
+function createManyParams(count) {
+  let str = '';
+
+  if (count === 0) {
+    return str;
+  }
+
+  str += '0=0';
+
+  for (let i = 1; i < count; i++) {
+    const n = i.toString(36);
+    str += `&${n}=${n}`;
+  }
+
+  return str;
+}
+
+const count = 10000;
+const originalMaxLength = 1000;
+const params = createManyParams(count);
+
+// thealphanerd
+// 27def4f introduced a change to parse that would cause Infinity
+// to be passed to String.prototype.split as an argument for limit
+// In this instance split will always return an empty array
+// this test confirms that the output of parse is the expected length
+// when passed Infinity as the argument for maxKeys
+const resultInfinity = parse(params, undefined, undefined, {
+  maxKeys: Infinity
+});
+const resultNaN = parse(params, undefined, undefined, {
+  maxKeys: NaN
+});
+const resultInfinityString = parse(params, undefined, undefined, {
+  maxKeys: 'Infinity'
+});
+const resultNaNString = parse(params, undefined, undefined, {
+  maxKeys: 'NaN'
+});
+
+// Non Finite maxKeys should return the length of input
+assert.strictEqual(Object.keys(resultInfinity).length, count);
+assert.strictEqual(Object.keys(resultNaN).length, count);
+// Strings maxKeys should return the maxLength
+// defined by parses internals
+assert.strictEqual(Object.keys(resultInfinityString).length, originalMaxLength);
+assert.strictEqual(Object.keys(resultNaNString).length, originalMaxLength);