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Diffstat (limited to 'js/src/tests/test262/language/statements/for-in/scope-body-lex-open.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-in/scope-body-lex-open.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-in/scope-body-lex-open.js b/js/src/tests/test262/language/statements/for-in/scope-body-lex-open.js new file mode 100644 index 0000000000..e33b87aa0f --- /dev/null +++ b/js/src/tests/test262/language/statements/for-in/scope-body-lex-open.js @@ -0,0 +1,50 @@ +// 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 the initial 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 + [...] + d. If lhsKind is either assignment or varBinding, then + [...] + e. Else, + i. Assert: lhsKind is lexicalBinding. + ii. Assert: lhs is a ForDeclaration. + iii. Let iterationEnv be NewDeclarativeEnvironment(oldEnv). + iv. Perform BindingInstantiation for lhs passing iterationEnv as the + argument. + v. Set the running execution context's LexicalEnvironment to + iterationEnv. + [...] +features: [let] +---*/ + +var probeBefore = function() { return x; }; +let x = 'outside'; +var probeExpr, probeDecl, probeBody; + +for ( + let [x, _ = probeDecl = function() { return x; }] + in + { i: probeExpr = function() { typeof x; }} + ) + probeBody = function() { return x; }; + +assert.sameValue(probeBefore(), 'outside'); +assert.throws(ReferenceError, probeExpr); +assert.sameValue(probeDecl(), 'i', 'reference from ForDeclaration'); +assert.sameValue(probeBody(), 'i', 'reference from statement body'); + +reportCompare(0, 0); |