// |reftest| async // This file was procedurally generated from the following sources: // - src/async-generators/yield-star-async-throw.case // - src/async-generators/default/async-class-decl-method.template /*--- description: execution order for yield* with async iterator and throw() (Async Generator method as a ClassDeclaration element) esid: prod-AsyncGeneratorMethod features: [async-iteration, Symbol.asyncIterator] flags: [generated, async] info: | ClassElement : MethodDefinition MethodDefinition : AsyncGeneratorMethod Async Generator Function Definitions AsyncGeneratorMethod : async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } YieldExpression: yield * AssignmentExpression ... 6. Repeat ... b. Else if received.[[Type]] is throw, then i. Let throw be ? GetMethod(iterator, "throw"). ii. If throw is not undefined, then 1. Let innerResult be ? Call(throw, iterator, « received.[[Value]] »). 2. If generatorKind is async, then set innerResult to ? Await(innerResult). ... 5. Let done be ? IteratorComplete(innerResult). 6. If done is true, then a. Let resultValue be Return ? IteratorValue(innerResult). b. If generatorKind is async, then set resultValue to ? Await(resultValue). c. Return resultValue. 7. If generatorKind is async, then let received be AsyncGeneratorYield(? IteratorValue(innerResult)). ... AsyncGeneratorYield ( value ) ... 8. Return ! AsyncGeneratorResolve(generator, value, false). ... ---*/ var log = []; var obj = { [Symbol.asyncIterator]() { var throwCount = 0; return { name: "asyncIterator", get next() { log.push({ name: "get next" }); return function() { return { value: "next-value-1", done: false }; }; }, get throw() { log.push({ name: "get throw", thisValue: this }); return function() { log.push({ name: "call throw", thisValue: this, args: [...arguments] }); throwCount++; if (throwCount == 1) { return { name: "throw-promise-1", get then() { log.push({ name: "get throw then (1)", thisValue: this }); return function(resolve) { log.push({ name: "call throw then (1)", thisValue: this, args: [...arguments] }); resolve({ name: "throw-result-1", get value() { log.push({ name: "get throw value (1)", thisValue: this }); return "throw-value-1"; }, get done() { log.push({ name: "get throw done (1)", thisValue: this }); return false; } }); }; } }; } return { name: "throw-promise-2", get then() { log.push({ name: "get throw then (2)", thisValue: this }); return function(resolve) { log.push({ name: "call throw then (2)", thisValue: this, args: [...arguments] }); resolve({ name: "throw-result-2", get value() { log.push({ name: "get throw value (2)", thisValue: this }); return "throw-value-2"; }, get done() { log.push({ name: "get throw done (2)", thisValue: this }); return true; } }); }; } }; }; } }; } }; var callCount = 0; class C { async *gen() { callCount += 1; log.push({ name: "before yield*" }); var v = yield* obj; log.push({ name: "after yield*", value: v }); return "return-value"; }} var gen = C.prototype.gen; var iter = gen(); assert.sameValue(log.length, 0, "log.length"); iter.next().then(v => { assert.sameValue(log[0].name, "before yield*"); assert.sameValue(log[1].name, "get next"); assert.sameValue(v.value, "next-value-1"); assert.sameValue(v.done, false); assert.sameValue(log.length, 2, "log.length"); iter.throw("throw-arg-1").then(v => { assert.sameValue(log[2].name, "get throw"); assert.sameValue(log[2].thisValue.name, "asyncIterator", "get throw thisValue"); assert.sameValue(log[3].name, "call throw"); assert.sameValue(log[3].thisValue.name, "asyncIterator", "throw thisValue"); assert.sameValue(log[3].args.length, 1, "throw args.length"); assert.sameValue(log[3].args[0], "throw-arg-1", "throw args[0]"); assert.sameValue(log[4].name, "get throw then (1)"); assert.sameValue(log[4].thisValue.name, "throw-promise-1", "get throw thisValue"); assert.sameValue(log[5].name, "call throw then (1)"); assert.sameValue(log[5].thisValue.name, "throw-promise-1", "throw thisValue"); assert.sameValue(log[5].args.length, 2, "throw then args.length"); assert.sameValue(typeof log[5].args[0], "function", "throw then args[0]"); assert.sameValue(typeof log[5].args[1], "function", "throw then args[1]"); assert.sameValue(log[6].name, "get throw done (1)"); assert.sameValue(log[6].thisValue.name, "throw-result-1", "get throw done thisValue"); assert.sameValue(log[7].name, "get throw value (1)"); assert.sameValue(log[7].thisValue.name, "throw-result-1", "get throw value thisValue"); assert.sameValue(v.value, "throw-value-1"); assert.sameValue(v.done, false); assert.sameValue(log.length, 8, "log.length"); iter.throw("throw-arg-2").then(v => { assert.sameValue(log[8].name, "get throw"); assert.sameValue(log[8].thisValue.name, "asyncIterator", "get throw thisValue"); assert.sameValue(log[9].name, "call throw"); assert.sameValue(log[9].thisValue.name, "asyncIterator", "throw thisValue"); assert.sameValue(log[9].args.length, 1, "throw args.length"); assert.sameValue(log[9].args[0], "throw-arg-2", "throw args[0]"); assert.sameValue(log[10].name, "get throw then (2)"); assert.sameValue(log[10].thisValue.name, "throw-promise-2", "get throw thisValue"); assert.sameValue(log[11].name, "call throw then (2)"); assert.sameValue(log[11].thisValue.name, "throw-promise-2", "throw thisValue"); assert.sameValue(log[11].args.length, 2, "throw then args.length"); assert.sameValue(typeof log[11].args[0], "function", "throw then args[0]"); assert.sameValue(typeof log[11].args[1], "function", "throw then args[1]"); assert.sameValue(log[12].name, "get throw done (2)"); assert.sameValue(log[12].thisValue.name, "throw-result-2", "get throw done thisValue"); assert.sameValue(log[13].name, "get throw value (2)"); assert.sameValue(log[13].thisValue.name, "throw-result-2", "get throw value thisValue"); assert.sameValue(log[14].name, "after yield*"); assert.sameValue(log[14].value, "throw-value-2"); assert.sameValue(v.value, "return-value"); assert.sameValue(v.done, true); assert.sameValue(log.length, 15, "log.length"); }).then($DONE, $DONE); }).catch($DONE); }).catch($DONE); assert.sameValue(callCount, 1);