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Zachary D. Rowitsch 93e0875dee
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Re-curate Test262 suite: expand to built-ins, add 500 tier-1 tests
Tier-1 (vendored PR gate): 751 → 1,251 tests (884 pass, 71%)
  - Added 500 tests across ASI, expressions, literals, keywords,
    identifiers, line-terminators, future-reserved-words, and more
  - 298 of 500 new tests pass immediately

Tier-2 (full upstream): 4,745 → 15,435 tests (3,230 pass, 21%)
  - scan_test262.py now scans both language/ and built-ins/ by default
  - Promoted 943 newly passing built-in tests (Boolean, Object, Array,
    String, Number, Function, etc.)
  - Skipped 4 flaky property-enumeration-order tests

Also fixed scan script to emit reason field for skip status entries.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-24 06:44:07 -05:00

32 lines
863 B
JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-globaldeclarationinstantiation
es6id: 15.1.8
description: Let binding collision with existing var declaration
info: |
[...]
5. For each name in lexNames, do
a. If envRec.HasVarDeclaration(name) is true, throw a SyntaxError
exception.
---*/
var test262Var;
function test262Fn() {}
assert.throws(SyntaxError, function() {
$262.evalScript('var x; let test262Var;');
}, 'variable');
assert.throws(ReferenceError, function() {
x;
}, 'no bindings created (script shadowing variable)');
assert.throws(SyntaxError, function() {
$262.evalScript('var x; let test262Fn;');
}, 'function');
assert.throws(ReferenceError, function() {
x;
}, 'no bindings created (script shadowing function)');