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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/eval-code/indirect/non-definable-global-var.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/eval-code/indirect/non-definable-global-var.js b/js/src/tests/test262/language/eval-code/indirect/non-definable-global-var.js new file mode 100644 index 0000000000..7f25c6d9d4 --- /dev/null +++ b/js/src/tests/test262/language/eval-code/indirect/non-definable-global-var.js @@ -0,0 +1,37 @@ +// 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-evaldeclarationinstantiation +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. + ... +---*/ + +var nonExtensible; +try { + Object.preventExtensions(this); + nonExtensible = !Object.isExtensible(this); +} catch (e) { + nonExtensible = false; +} + +// Run test if global object is non-extensible. +if (nonExtensible) { + assert.throws(TypeError, function() { + (0,eval)("var unlikelyVariableName;"); + }); +} + +reportCompare(0, 0); |