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test: add coverage for AsyncResource constructor #13327

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test: add coverage for AsyncResource constructor #13327

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24 changes: 24 additions & 0 deletions test/parallel/test-async-wrap-asyncresource-constructor.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
'use strict';
require('../common');

// This tests that AsyncResource throws an error if bad parameters are passed

const assert = require('assert');
const AsyncResource = require('async_hooks').AsyncResource;
const async_wrap = process.binding('async_wrap');

assert.throws(() => {
return new AsyncResource();
}, new RegExp('^TypeError: type must be a string with length > 0$'));
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I am not sure @jasnell’s nit was actually addressed… why are these new RegExp() calls? It might be confusing to readers of our tests because we almost exclusively use them to create dynamic regexes that depend on variables.

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No, my comments were not addressed. I would prefer to see the /..../ regex pattern used but I'm fine with this either way.


assert.throws(() => {
new AsyncResource('');
}, new RegExp('^TypeError: type must be a string with length > 0$'));

assert.throws(() => {
new AsyncResource('type', -4);
}, new RegExp('^RangeError: triggerId must be an unsigned integer$'));

assert.throws(() => {
new AsyncResource('type', Math.PI);
}, new RegExp('^RangeError: triggerId must be an unsigned integer$'));