yield-spread-arr-single.js (1426B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-spread-arr-single.case 4 // - src/async-generators/default/async-class-expr-static-method.template 5 /*--- 6 description: Use yield value in a array spread position (Static async generator method as a ClassExpression element) 7 esid: prod-AsyncGeneratorMethod 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 ClassElement : 12 static MethodDefinition 13 14 MethodDefinition : 15 AsyncGeneratorMethod 16 17 Async Generator Function Definitions 18 19 AsyncGeneratorMethod : 20 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } 21 22 23 Array Initializer 24 25 SpreadElement[Yield, Await]: 26 ...AssignmentExpression[+In, ?Yield, ?Await] 27 28 ---*/ 29 var arr = ['a', 'b', 'c']; 30 31 32 var callCount = 0; 33 34 var C = class { static async *gen() { 35 callCount += 1; 36 yield [...yield]; 37 }} 38 39 var gen = C.gen; 40 41 var iter = gen(); 42 43 iter.next(false); 44 var item = iter.next(arr); 45 46 item.then(({ done, value }) => { 47 assert.notSameValue(value, arr, 'value is a new array'); 48 assert(Array.isArray(value), 'value is an Array exotic object'); 49 assert.sameValue(value.length, 3) 50 assert.sameValue(value[0], 'a'); 51 assert.sameValue(value[1], 'b'); 52 assert.sameValue(value[2], 'c'); 53 assert.sameValue(done, false); 54 }).then($DONE, $DONE); 55 56 assert.sameValue(callCount, 1);