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Diffstat (limited to 'js/src/tests/test262/language/statements/for-in/scope-body-lex-boundary.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-in/scope-body-lex-boundary.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-in/scope-body-lex-boundary.js b/js/src/tests/test262/language/statements/for-in/scope-body-lex-boundary.js new file mode 100644 index 0000000000..506fb0ff60 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-in/scope-body-lex-boundary.js @@ -0,0 +1,52 @@ +// 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 for each evaluation of the statement + body +info: | + IterationStatement : for ( ForDeclaration of AssignmentExpression ) Statement + + [...] + 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, + lexicalBinding, labelSet). + + 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation + + [...] + 5. Repeat + [...] + i. Let result be the result of evaluating stmt. + j. Set the running execution context's LexicalEnvironment to oldEnv. + k. If LoopContinues(result, labelSet) is false, return ? + IteratorClose(iterator, UpdateEmpty(result, V)). + l. If result.[[Value]] is not empty, let V be result.[[Value]]. +features: [let] +---*/ + +let x = 'outside'; +var probeFirst, probeSecond; + +for (let x in { a: 0, b: 0 }) + if (!probeFirst) + probeFirst = function() { return x; }; + else + probeSecond = function() { return x; }; + + +// 13.7.5.15 EnumerateObjectProperties +// +// > [...] The mechanics and order of enumerating the properties is not +// > specified [...] +assert.notSameValue(probeFirst(), probeSecond()); +assert( + probeFirst() === 'a' || probeFirst() === 'b', + 'First binding is either "a" or "b"' +); +assert( + probeSecond() === 'a' || probeSecond() === 'b', + 'Second binding is either "a" or "b"' +); + +reportCompare(0, 0); |