test: migrate a pseudo_tty test to use assertSnapshot

PR-URL: #47803
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

test/common/assertSnapshot.js

@@ -1,14 +1,14 @@
 'use strict';
 const common = require('.');
 const path = require('node:path');
+const test = require('node:test');
 const fs = require('node:fs/promises');
 const assert = require('node:assert/strict');
 
-
-const stackFramesRegexp = /(\s+)((.+?)\s+\()?(?:\(?(.+?):(\d+)(?::(\d+))?)\)?(\s+\{)?(\n|$)/g;
+const stackFramesRegexp = /(\s+)((.+?)\s+\()?(?:\(?(.+?):(\d+)(?::(\d+))?)\)?(\s+\{)?(\[\d+m)?(\n|$)/g;
 const windowNewlineRegexp = /\r/g;
 
-function replaceStackTrace(str, replacement = '$1*$7\n') {
+function replaceStackTrace(str, replacement = '$1*$7$8\n') {
   return str.replace(stackFramesRegexp, replacement);
 }
 
@@ -50,11 +50,19 @@ async function assertSnapshot(actual, filename = process.argv[1]) {
  * assertSnapshot.transform(assertSnapshot.replaceStackTrace, assertSnapshot.replaceWindowsLineEndings)
  * @param {string} filename
  * @param {function(string): string} [transform]
+ * @param {object} [options] - control how the child process is spawned
+ * @param {boolean} [options.tty] - whether to spawn the process in a pseudo-tty
  * @returns {Promise<void>}
  */
-async function spawnAndAssert(filename, transform = (x) => x) {
+async function spawnAndAssert(filename, transform = (x) => x, { tty = false } = {}) {
+  if (tty && common.isWindows) {
+    test({ skip: 'Skipping pseudo-tty tests, as pseudo terminals are not available on Windows.' });
+    return;
+  }
   const flags = common.parseTestFlags(filename);
-  const { stdout, stderr } = await common.spawnPromisified(process.execPath, [...flags, filename]);
+  const executable = tty ? 'tools/pseudo-tty.py' : process.execPath;
+  const args = tty ? [process.execPath, ...flags, filename] : [...flags, filename];
+  const { stdout, stderr } = await common.spawnPromisified(executable, args);
   await assertSnapshot(transform(`${stdout}${stderr}`), filename);
 }
 

test/pseudo-tty/test_runner_default_reporter.js → test/fixtures/test-runner/output/default_output.js

@@ -3,7 +3,7 @@ process.env.FORCE_COLOR = '1';
 delete process.env.NODE_DISABLE_COLORS;
 delete process.env.NO_COLOR;
 
-require('../common');
+require('../../../common');
 const test = require('node:test');
 
 test('should pass', () => {});

test/fixtures/test-runner/output/default_output.snapshot

@@ -0,0 +1,57 @@
+[32m✔ should pass [90m(*ms)[39m[39m
+[31m✖ should fail [90m(*ms)[39m[39m
+  Error: fail
+      *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+
+[90m﹣ should skip [90m(*ms)[39m # SKIP[39m
+▶ parent
+  [31m✖ should fail [90m(*ms)[39m[39m
+    Error: fail
+        *[39m
+    *[39m
+    *[39m
+    *[39m
+    *[39m
+
+  [31m✖ should pass but parent fail [90m(*ms)[39m[39m
+    [32m'test did not finish before its parent and was cancelled'[39m
+
+[31m▶ [39mparent [90m(*ms)[39m
+
+[34mℹ tests 6[39m
+[34mℹ suites 0[39m
+[34mℹ pass 1[39m
+[34mℹ fail 3[39m
+[34mℹ cancelled 1[39m
+[34mℹ skipped 1[39m
+[34mℹ todo 0[39m
+[34mℹ duration_ms *[39m
+
+[31m✖ failing tests:[39m
+
+[31m✖ should fail [90m(*ms)[39m[39m
+  Error: fail
+      *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+
+[31m✖ should fail [90m(*ms)[39m[39m
+  Error: fail
+      *[39m
+  *[39m
+  *[39m
+  *[39m
+  *[39m
+
+[31m✖ should pass but parent fail [90m(*ms)[39m[39m
+  [32m'test did not finish before its parent and was cancelled'[39m

test/parallel/test-runner-output.mjs

@@ -10,16 +10,20 @@ function replaceTestDuration(str) {
     .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *');
 }
 
+const color = '(\\[\\d+m)';
+const stackTraceBasePath = new RegExp(`${color}\\(${process.cwd()}/?${color}(.*)${color}\\)`, 'g');
+
 function replaceSpecDuration(str) {
   return str
     .replaceAll(/\(0(\r?\n)ms\)/g, '(ZEROms)')
     .replaceAll(/[0-9.]+ms/g, '*ms')
-    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *');
+    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *')
+    .replace(stackTraceBasePath, '$3');
 }
 const defaultTransform = snapshot
   .transform(snapshot.replaceWindowsLineEndings, snapshot.replaceStackTrace, replaceTestDuration);
 const specTransform = snapshot
-  .transform(snapshot.replaceWindowsLineEndings, snapshot.replaceStackTrace, replaceSpecDuration);
+  .transform(replaceSpecDuration, snapshot.replaceWindowsLineEndings, snapshot.replaceStackTrace);
 
 
 const tests = [
@@ -40,10 +44,11 @@ const tests = [
   { name: 'test-runner/output/name_pattern.js' },
   { name: 'test-runner/output/name_pattern_with_only.js' },
   { name: 'test-runner/output/unresolved_promise.js' },
-].map(({ name, transform }) => ({
+  { name: 'test-runner/output/default_output.js', transform: specTransform, tty: true },
+].map(({ name, tty, transform }) => ({
   name,
   fn: common.mustCall(async () => {
-    await snapshot.spawnAndAssert(fixtures.path(name), transform ?? defaultTransform);
+    await snapshot.spawnAndAssert(fixtures.path(name), transform ?? defaultTransform, { tty });
   }),
 }));
 

test/pseudo-tty/testcfg.py

@@ -36,7 +36,7 @@
 from functools import reduce
 
 FLAGS_PATTERN = re.compile(r"//\s+Flags:(.*)")
-PTY_HELPER = join(dirname(__file__), 'pty_helper.py')
+PTY_HELPER = join(dirname(__file__), '../../tools/pseudo-tty.py')
 
 class TTYTestCase(test.TestCase):
 

test/pseudo-tty/pty_helper.py → tools/pseudo-tty.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 import errno
 import os
 import pty