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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/function/dstr/dflt-ary-ptrn-rest-ary-empty.js | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/function/dstr/dflt-ary-ptrn-rest-ary-empty.js b/js/src/tests/test262/language/statements/function/dstr/dflt-ary-ptrn-rest-ary-empty.js new file mode 100644 index 0000000000..439abacd1a --- /dev/null +++ b/js/src/tests/test262/language/statements/function/dstr/dflt-ary-ptrn-rest-ary-empty.js @@ -0,0 +1,74 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-ary-empty.case +// - src/dstr-binding/default/func-decl-dflt.template +/*--- +description: Rest element containing an "empty" array pattern (function declaration (default parameter)) +esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject +features: [generators, destructuring-binding, default-parameters] +flags: [generated] +info: | + FunctionDeclaration : + function BindingIdentifier ( FormalParameters ) { FunctionBody } + + [...] + 3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody, + 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. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + BindingRestElement : ... BindingPattern + + 1. Let A be ArrayCreate(0). + [...] + 3. Repeat + [...] + b. If iteratorRecord.[[done]] is true, then + i. Return the result of performing BindingInitialization of + BindingPattern with A and environment as the arguments. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + ArrayBindingPattern : [ ] + + 1. Return NormalCompletion(empty). + +---*/ +var iterations = 0; +var iter = function*() { + iterations += 1; +}(); + +var callCount = 0; +function f([...[]] = iter) { + assert.sameValue(iterations, 1); + callCount = callCount + 1; +}; +f(); +assert.sameValue(callCount, 1, 'function invoked exactly once'); + +reportCompare(0, 0); |