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test: make sure linked lists are inspectable with defaults

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Make sure that a long singly-linked list can be passed
to `util.inspect()` without causing a stack overflow.

PR-URL: https://github.com/nodejs/node/pull/20017
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Anna Henningsen 2018-05-06 18:14:59 +02:00 committed by Ruben Bridgewater
parent 849aaaeeb0
commit 5096e249e7
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1 changed files with 12 additions and 0 deletions
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12
test/parallel/test-util-inspect.js
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@ -1404,3 +1404,15 @@ util.inspect(process);
const args = (function() { return arguments; })('a'); const args = (function() { return arguments; })('a');
assert.strictEqual(util.inspect(args), "[Arguments] { '0': 'a' }"); assert.strictEqual(util.inspect(args), "[Arguments] { '0': 'a' }");
} }
{
// Test that a long linked list can be inspected without throwing an error.
const list = {};
let head = list;
// The real cutoff value is closer to 1400 stack frames as of May 2018,
// but let's be generous here – even a linked listed of length 100k should be
// inspectable in some way.
for (let i = 0; i < 100000; i++)
head = head.next = {};
util.inspect(list);
}