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test: reduce the use of private symbols in test-events-once.js #58685

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merged 1 commit into from
Jun 15, 2025
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test: reduce the use of private symbols in test-events-once.js #58685

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13 changes: 6 additions & 7 deletions test/parallel/test-events-once.js
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Original file line number Diff line number Diff line change
@@ -1,15 +1,14 @@
'use strict';
// Flags: --expose-internals --no-warnings
// Flags: --no-warnings

const common = require('../common');
const { once, EventEmitter } = require('events');
const { once, EventEmitter, getEventListeners } = require('events');
const {
deepStrictEqual,
fail,
rejects,
strictEqual,
} = require('assert');
const { kEvents } = require('internal/event_target');

async function onceAnEvent() {
const ee = new EventEmitter();
Expand Down Expand Up @@ -78,7 +77,7 @@ async function catchesErrorsWithAbortSignal() {
try {
const promise = once(ee, 'myevent', { signal });
strictEqual(ee.listenerCount('error'), 1);
strictEqual(signal[kEvents].size, 1);
strictEqual(getEventListeners(signal, 'abort').length, 1);

await promise;
} catch (e) {
Expand All @@ -87,7 +86,7 @@ async function catchesErrorsWithAbortSignal() {
strictEqual(err, expected);
strictEqual(ee.listenerCount('error'), 0);
strictEqual(ee.listenerCount('myevent'), 0);
strictEqual(signal[kEvents].size, 0);
strictEqual(getEventListeners(signal, 'abort').length, 0);
}

async function stopListeningAfterCatchingError() {
Expand Down Expand Up @@ -198,9 +197,9 @@ async function abortSignalAfterEvent() {
ac.abort();
});
const promise = once(ee, 'foo', { signal: ac.signal });
strictEqual(ac.signal[kEvents].size, 1);
strictEqual(getEventListeners(ac.signal, 'abort').length, 1);
await promise;
strictEqual(ac.signal[kEvents].size, 0);
strictEqual(getEventListeners(ac.signal, 'abort').length, 0);
}

async function abortSignalRemoveListener() {
Expand Down
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