named-dflt-ary-ptrn-elem-ary-elem-iter.js (1540B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/ary-ptrn-elem-ary-elem-iter.case 4 // - src/dstr-binding/default/async-gen-func-named-expr-dflt.template 5 /*--- 6 description: BindingElement with array binding pattern and initializer is not used (async generator named function expression (default parameter)) 7 esid: sec-asyncgenerator-definitions-evaluation 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier 12 ( FormalParameters ) { AsyncGeneratorBody } 13 14 [...] 15 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, 16 AsyncGeneratorBody, funcEnv, strict). 17 [...] 18 19 20 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 21 22 BindingElement : BindingPatternInitializer opt 23 24 1. If iteratorRecord.[[done]] is false, then 25 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 26 [...] 27 e. Else, 28 i. Let v be IteratorValue(next). 29 [...] 30 4. Return the result of performing BindingInitialization of BindingPattern 31 with v and environment as the arguments. 32 ---*/ 33 34 35 var callCount = 0; 36 var f; 37 f = async function* h([[x, y, z] = [4, 5, 6]] = [[7, 8, 9]]) { 38 assert.sameValue(x, 7); 39 assert.sameValue(y, 8); 40 assert.sameValue(z, 9); 41 callCount = callCount + 1; 42 }; 43 44 f().next().then(() => { 45 assert.sameValue(callCount, 1, 'invoked exactly once'); 46 }).then($DONE, $DONE);