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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/module-code/instn-local-bndng-var.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/instn-local-bndng-var.js b/js/src/tests/test262/language/module-code/instn-local-bndng-var.js new file mode 100644 index 0000000000..174134d0a8 --- /dev/null +++ b/js/src/tests/test262/language/module-code/instn-local-bndng-var.js @@ -0,0 +1,40 @@ +// |reftest| module +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +description: > + Mutable bindings are initialized in the lexical environment record prior to + execution for variable declarations +esid: sec-moduledeclarationinstantiation +info: | + [...] + 13. Let varDeclarations be the VarScopedDeclarations of code. + 14. Let declaredVarNames be a new empty List. + 15. For each element d in varDeclarations do + a. For each element dn of the BoundNames of d do + i. If dn is not an element of declaredVarNames, then + 1. Perform ! envRec.CreateMutableBinding(dn, false). + 2. Call envRec.InitializeBinding(dn, undefined). + 3. Append dn to declaredVarNames. + [...] +includes: [fnGlobalObject.js] +flags: [module] +---*/ + +var global = fnGlobalObject(); + +assert.sameValue(test262, undefined, 'value is initialized to `undefined`'); +assert.sameValue( + Object.getOwnPropertyDescriptor(global, 'test262'), undefined +); + +var test262 = null; + +assert.sameValue(test262, null, 'binding is mutable'); +assert.sameValue( + Object.getOwnPropertyDescriptor(global, 'test262'), + undefined, + 'global binding is not effected by evaluation of declaration' +); + +reportCompare(0, 0); |