ary-ptrn-rest-ary-rest.js (1510B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/ary-ptrn-rest-ary-rest.case 4 // - src/dstr-binding/default/async-gen-func-decl.template 5 /*--- 6 description: Rest element containing a rest element (async generator function declaration) 7 esid: sec-asyncgenerator-definitions-instantiatefunctionobject 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier 12 ( FormalParameters ) { AsyncGeneratorBody } 13 14 [...] 15 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, 16 scope, strict). 17 [...] 18 19 20 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 21 22 BindingRestElement : ... BindingPattern 23 24 1. Let A be ArrayCreate(0). 25 [...] 26 3. Repeat 27 [...] 28 b. If iteratorRecord.[[done]] is true, then 29 i. Return the result of performing BindingInitialization of 30 BindingPattern with A and environment as the arguments. 31 [...] 32 ---*/ 33 var values = [1, 2, 3]; 34 35 36 var callCount = 0; 37 async function* f([...[...x]]) { 38 assert(Array.isArray(x)); 39 assert.sameValue(x.length, 3); 40 assert.sameValue(x[0], 1); 41 assert.sameValue(x[1], 2); 42 assert.sameValue(x[2], 3); 43 assert.notSameValue(x, values); 44 45 callCount = callCount + 1; 46 }; 47 f(values).next().then(() => { 48 assert.sameValue(callCount, 1, 'invoked exactly once'); 49 }).then($DONE, $DONE);