test262/test/language/statements/function/params-trailing-comma-lengt...

25 lines
634 B
JavaScript

// Copyright (C) 2016 Jeff Morrison. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Check that trailing commas don't affect the .length property of
function declarations.
info: http://jeffmo.github.io/es-trailing-function-commas/
author: Jeff Morrison <lbljeffmo@gmail.com>
---*/
function one(a,) {}
function two(a,b,) {}
assert.sameValue(
one.length,
1,
"Function expression with 1 arg + trailing comma reports incorrect .length!"
);
assert.sameValue(
two.length,
2,
"Function expression with 2 args + trailing comma reports incorrect .length!"
);