async-gen-meth-ary-ptrn-rest-obj-id.js (1648B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/ary-ptrn-rest-obj-id.case 4 // - src/dstr-binding/default/async-gen-meth.template 5 /*--- 6 description: Rest element containing an object binding pattern (async generator method) 7 esid: sec-asyncgenerator-definitions-propertydefinitionevaluation 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorMethod : 12 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) 13 { AsyncGeneratorBody } 14 15 1. Let propKey be the result of evaluating PropertyName. 16 2. ReturnIfAbrupt(propKey). 17 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. 18 Otherwise let strict be false. 19 4. Let scope be the running execution context's LexicalEnvironment. 20 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 21 AsyncGeneratorBody, scope, strict). 22 [...] 23 24 25 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 26 27 BindingRestElement : ... BindingPattern 28 29 1. Let A be ArrayCreate(0). 30 [...] 31 3. Repeat 32 [...] 33 b. If iteratorRecord.[[done]] is true, then 34 i. Return the result of performing BindingInitialization of 35 BindingPattern with A and environment as the arguments. 36 [...] 37 ---*/ 38 39 40 var callCount = 0; 41 var obj = { 42 async *method([...{ length }]) { 43 assert.sameValue(length, 3); 44 callCount = callCount + 1; 45 } 46 }; 47 48 obj.method([1, 2, 3]).next().then(() => { 49 assert.sameValue(callCount, 1, 'invoked exactly once'); 50 }).then($DONE, $DONE);