test262/test/language/eval-code/direct/non-definable-global-var.js
Mike Pennisi 7630e1763d Re-organize tests for eval
Limit tests in `language/expressions/call/` and `built-ins/eval/` to
only assert details that are directly related to the invocation pattern.
Re-organize all other tests within the `language/eval-code/` directory,
further categorizing each as `direct` or `indirect` as appropriate.
Remove the extraneous "executable" flag from those files which carried
it.
2016-04-25 16:36:36 -04:00

42 lines
1.1 KiB
JavaScript

// Copyright (C) 2015 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 18.2.1.2
description: Throws a TypeError if a global variable cannot be defined.
info: >
Runtime Semantics: EvalDeclarationInstantiation( body, varEnv, lexEnv, strict)
...
10. For each d in varDeclarations, do
a. If d is a VariableDeclaration or a ForBinding, then
i. For each String vn in the BoundNames of d, do
1. If vn is not an element of declaredFunctionNames, then
a. If varEnvRec is a global Environment Record, then
i. Let vnDefinable be varEnvRec.CanDeclareGlobalVar(vn).
ii. ReturnIfAbrupt(vnDefinable).
iii. If vnDefinable is false, throw TypeError exception.
...
flags: [noStrict]
---*/
var nonExtensible;
try {
Object.preventExtensions(this);
nonExtensible = !Object.isExtensible(this);
} catch (e) {
nonExtensible = false;
}
// Run test if global object is non-extensible.
if (nonExtensible) {
var error;
try {
eval("var unlikelyVariableName");
} catch (e) {
error = e;
}
assert(error instanceof TypeError);
}