Do not count writes to stdout/stderr as non-idling activity for timeouts

lib/api.js

@@ -218,9 +218,8 @@ export default class Api extends Emittery {
 }
 
 runStatus.on('stateChange', record => {
-if (record.testFile && !timedOutWorkerFiles.has(record.testFile)) {
-// Debounce the timer whenever there is activity from workers that
-// haven't already timed out.
+if (record.testFile && !timedOutWorkerFiles.has(record.testFile) && record.type !== 'worker-stderr' && record.type !== 'worker-stdout') {
+// Debounce the timer whenever there is test-related activity from workers that haven't already timed out.
 timeoutTrigger.debounce();
 }
 

test/idle-timeouts/fixtures/console-output.js

@@ -0,0 +1,13 @@
+import {setTimeout as delay} from 'node:timers/promises';
+import test from 'ava';
+
+test('timeout with console output', async t => {
+t.timeout(1000, 'timeout despite console output');
+for (let i = 0; await delay(100, true); i++) {
+if (i % 2 === 0) {
+console.log('stdout');
+} else {
+console.error('stderr');
+}
+}
+});

test/idle-timeouts/fixtures/package.json

@@ -0,0 +1,9 @@
+{
+"type": "module",
+"ava": {
+"files": [
+"*.js"
+],
+"timeout": "500ms"
+}
+}

test/idle-timeouts/test.js

@@ -0,0 +1,9 @@
+import test from '@ava/test';
+
+import {fixture} from '../helpers/exec.js';
+
+test('idle timeouts are not blocked by console output', async t => {
+const result = await t.throwsAsync(fixture(['console-output.js']));
+const error = result.stats.getError(result.stats.failed[0]);
+t.is(error.message, 'timeout despite console output');
+});