diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for-in/scope-head-lex-open.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-in/scope-head-lex-open.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-in/scope-head-lex-open.js b/js/src/tests/test262/language/statements/for-in/scope-head-lex-open.js new file mode 100644 index 0000000000..fb51fb7cb3 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-in/scope-head-lex-open.js @@ -0,0 +1,40 @@ +// 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-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +description: > + Creation of new lexical environment to serve as a temporal dead zone for + the statement's AssignmentExpresson +info: | + IterationStatement : for ( ForDeclaration of AssignmentExpression ) Statement + + 1. Let keyResult be the result of performing ? + ForIn/OfHeadEvaluation(BoundNames of ForDeclaration, + AssignmentExpression, iterate). + [...] + + 13.7.5.12 Runtime Semantics: ForIn/OfHeadEvaluation + + [...] + 2. If TDZnames is not an empty List, then + a. Assert: TDZnames has no duplicate entries. + b. Let TDZ be NewDeclarativeEnvironment(oldEnv). + c. Let TDZEnvRec be TDZ's EnvironmentRecord. + d. For each string name in TDZnames, do + i. Perform ! TDZEnvRec.CreateMutableBinding(name, false). + e. Set the running execution context's LexicalEnvironment to TDZ. + 3. Let exprRef be the result of evaluating expr. + [...] +features: [let] +---*/ + +let x = 'outside'; +var probeBefore = function() { return x; }; +var probeExpr; + +for (let x in { i: probeExpr = function() { typeof x; }}) ; + +assert.sameValue(probeBefore(), 'outside'); +assert.throws(ReferenceError, probeExpr); + +reportCompare(0, 0); |