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Diffstat (limited to 'js/src/tests/test262/language/expressions/arrow-function/dstr/dflt-ary-init-iter-no-close.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/arrow-function/dstr/dflt-ary-init-iter-no-close.js | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/arrow-function/dstr/dflt-ary-init-iter-no-close.js b/js/src/tests/test262/language/expressions/arrow-function/dstr/dflt-ary-init-iter-no-close.js new file mode 100644 index 0000000000..b3dd22db95 --- /dev/null +++ b/js/src/tests/test262/language/expressions/arrow-function/dstr/dflt-ary-init-iter-no-close.js @@ -0,0 +1,73 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-init-iter-no-close.case +// - src/dstr-binding/default/arrow-function-dflt.template +/*--- +description: Iterator is not closed when exhausted by pattern evaluation (arrow function expression (default parameter)) +esid: sec-arrow-function-definitions-runtime-semantics-evaluation +features: [Symbol.iterator, destructuring-binding, default-parameters] +flags: [generated] +info: | + ArrowFunction : ArrowParameters => ConciseBody + + [...] + 4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict). + [...] + + 9.2.1 [[Call]] ( thisArgument, argumentsList) + + [...] + 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). + [...] + + 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) + + 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). + [...] + + 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) + + [...] + 23. Let iteratorRecord be Record {[[iterator]]: + CreateListIterator(argumentsList), [[done]]: false}. + 24. If hasDuplicates is true, then + [...] + 25. Else, + b. Let formalStatus be IteratorBindingInitialization for formals with + iteratorRecord and env as arguments. + [...] + + 13.3.3.5 Runtime Semantics: BindingInitialization + + BindingPattern : ArrayBindingPattern + + [...] + 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator, + result). + [...] + +---*/ +var doneCallCount = 0; +var iter = {}; +iter[Symbol.iterator] = function() { + return { + next: function() { + return { value: null, done: true }; + }, + return: function() { + doneCallCount += 1; + return {}; + } + }; +}; + +var callCount = 0; +var f; +f = ([x] = iter) => { + assert.sameValue(doneCallCount, 0); + callCount = callCount + 1; +}; + +f(); +assert.sameValue(callCount, 1, 'arrow function invoked exactly once'); + +reportCompare(0, 0); |