diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-rest-id-iter-step-err.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-rest-id-iter-step-err.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-rest-id-iter-step-err.js b/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-rest-id-iter-step-err.js new file mode 100644 index 0000000000..08002818b2 --- /dev/null +++ b/js/src/tests/test262/language/statements/for/dstr/const-ary-ptrn-rest-id-iter-step-err.js @@ -0,0 +1,68 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case +// - src/dstr-binding/error/for-const.template +/*--- +description: Error forwarding when IteratorStep returns an abrupt completion (for statement) +esid: sec-for-statement-runtime-semantics-labelledevaluation +features: [generators, destructuring-binding] +flags: [generated] +info: | + IterationStatement : + for ( LexicalDeclaration Expressionopt ; Expressionopt ) Statement + + [...] + 7. Let forDcl be the result of evaluating LexicalDeclaration. + [...] + + LexicalDeclaration : LetOrConst BindingList ; + + 1. Let next be the result of evaluating BindingList. + 2. ReturnIfAbrupt(next). + 3. Return NormalCompletion(empty). + + BindingList : BindingList , LexicalBinding + + 1. Let next be the result of evaluating BindingList. + 2. ReturnIfAbrupt(next). + 3. Return the result of evaluating LexicalBinding. + + LexicalBinding : BindingPattern Initializer + + 1. Let rhs be the result of evaluating Initializer. + 2. Let value be GetValue(rhs). + 3. ReturnIfAbrupt(value). + 4. Let env be the running execution context’s LexicalEnvironment. + 5. Return the result of performing BindingInitialization for BindingPattern + using value and env as the arguments. + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + BindingRestElement : ... BindingIdentifier + 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier, + environment). + 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat, + a. If iteratorRecord.[[done]] is false, + i. Let next be IteratorStep(iteratorRecord.[[iterator]]). + ii. If next is an abrupt completion, set iteratorRecord.[[done]] to + true. + iii. ReturnIfAbrupt(next). + +---*/ +var first = 0; +var second = 0; +var iter = function*() { + first += 1; + throw new Test262Error(); + second += 1; +}(); + +assert.throws(Test262Error, function() { + for (const [...x] = iter; ; ) { + return; + } +}); + +iter.next(); +assert.sameValue(first, 1); +assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.'); + +reportCompare(0, 0); |