diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for/scope-head-lex-open.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for/scope-head-lex-open.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for/scope-head-lex-open.js b/js/src/tests/test262/language/statements/for/scope-head-lex-open.js new file mode 100644 index 0000000000..5d60618fa3 --- /dev/null +++ b/js/src/tests/test262/language/statements/for/scope-head-lex-open.js @@ -0,0 +1,41 @@ +// 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-statement-runtime-semantics-labelledevaluation +description: Creation of new lexical environment for the statement "head" +info: | + [...] + 2. Let loopEnv be NewDeclarativeEnvironment(oldEnv). + 3. Let loopEnvRec be loopEnv's EnvironmentRecord. + 4. Let isConst be the result of performing IsConstantDeclaration of + LexicalDeclaration. + 5. Let boundNames be the BoundNames of LexicalDeclaration. + 6. For each element dn of boundNames do + a. If isConst is true, then + i. Perform ! loopEnvRec.CreateImmutableBinding(dn, true). + b. Else, + i. Perform ! loopEnvRec.CreateMutableBinding(dn, false). + 7. Set the running execution context's LexicalEnvironment to loopEnv. + [...] +features: [let] +---*/ + +let x = 'outside'; +var probeBefore = function() { return x; }; +var probeDecl, probeTest, probeIncr, probeBody; +var run = true; + +for ( + let x = 'inside', _ = probeDecl = function() { return x; }; + run && (probeTest = function() { return x; }); + probeIncr = function() { return x; } + ) + probeBody = function() { return x; }, run = false; + +assert.sameValue(probeBefore(), 'outside'); +assert.sameValue(probeDecl(), 'inside', 'reference from LexicalDeclaration'); +assert.sameValue(probeTest(), 'inside', 'reference from "test" position'); +assert.sameValue(probeBody(), 'inside', 'reference from statement body'); +assert.sameValue(probeIncr(), 'inside', 'reference from "increment" position'); + +reportCompare(0, 0); |