Tap escaping not consistent with and without `--test`

[MoLow]

Version

v20.0.0-pre

Platform

Darwin Moshes-MBP.localdomain 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:01 PDT 2021; root:xnu-8019.41.5~1/RELEASE_ARM64_T6000 arm64

Subsystem

test_runner

What steps will reproduce the bug?

create test.js

const test = require('node:test');
test('escaped description \\ # \\#\\ \n \t \f \v \b \r');

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior?

when running without --test:

node test.js

TAP version 13
# Subtest: escaped description \\ \# \\\#\\ \n \t \f \v \b \r
ok 1 - escaped description \\ \# \\\#\\ \n \t \f \v \b \r
 ---
 duration_ms: 1.318167
 ...
1..1
# tests 1
# pass 1
# fail 0
# cancelled 0
# skipped 0
# todo 0
# duration_ms 3.680459

What do you see instead?

when running with --test

node --test test.js

TAP version 13
# Subtest: /Users/moshe/repos/node/a.js
 # Subtest: escaped description \\ \# \\\#\\ n \\t f \\v b \\r
 ok 1 - escaped description \\ \# \\\#\\ n \\t f \\v b \\r
 ---
 duration_ms: 1.295459
 ...
 1..1
ok 1 - /Users/moshe/repos/node/a.js
 ---
 duration_ms: 80.91975
 ...
1..1
# tests 1
# pass 1
# fail 0
# cancelled 0
# skipped 0
# todo 0
# duration_ms 81.80225

Additional information

No response

[debadree25]

@MoLow could you guide which relevant files I could look into, can take a stab at this

[MoLow]

I am not sure where the exact issue is, but these can be good places to start the investigation

node/lib/internal/test_runner/tap_stream.js

Lines 133 to 143 in 0429774

	function tapEscape(input) {
	let result = StringPrototypeReplaceAll(input, '\\', '\\\\');
	result = StringPrototypeReplaceAll(result, '#', '\\#');
	result = StringPrototypeReplaceAll(result, '\b', '\\b');
	result = StringPrototypeReplaceAll(result, '\f', '\\f');
	result = StringPrototypeReplaceAll(result, '\t', '\\t');
	result = StringPrototypeReplaceAll(result, '\n', '\\n');
	result = StringPrototypeReplaceAll(result, '\r', '\\r');
	result = StringPrototypeReplaceAll(result, '\v', '\\v');
	return result;
	}

node/lib/internal/test_runner/tap_parser.js

Lines 360 to 362 in 0429774

	if (nextToken.kind !== TokenKind.ESCAPE) {
	ArrayPrototypePush(literals, word);
	}

[MoLow]

also

node/lib/internal/test_runner/tap_lexer.js

Line 515 in 0429774

#isEscapeSymbol(char) {

[debadree25]

Thank you so much looking into it!

[7suyash7]

$ node --test test.js
TAP version 13
# Subtest: /test/test.js
ok 1 - /test.js
 ---
 duration_ms: 0.036416797
 ...
1..1
# tests 1
# pass 1
# fail 0
# cancelled 0
# skipped 0
# todo 0
# duration_ms 0.079281594

Has this been fixed, here's the output which I get?

[cjihrig]

@manekinekko any ideas here?