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// |reftest| async
// This file was procedurally generated from the following sources:
// - src/async-generators/yield-star-async-next.case
// - src/async-generators/default/async-declaration.template
/*---
description: Execution order for yield* with async iterator and next() (Async generator Function declaration)
esid: prod-AsyncGeneratorDeclaration
features: [Symbol.iterator, async-iteration, Symbol.asyncIterator]
flags: [generated, async]
info: |
Async Generator Function Definitions
AsyncGeneratorDeclaration:
async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
AsyncGeneratorBody }
---*/
var log = [];
var obj = {
get [Symbol.iterator]() {
log.push({ name: "get [Symbol.iterator]" });
},
get [Symbol.asyncIterator]() {
log.push({
name: "get [Symbol.asyncIterator]",
thisValue: this
});
return function() {
log.push({
name: "call [Symbol.asyncIterator]",
thisValue: this,
args: [...arguments]
});
var nextCount = 0;
return {
name: "asyncIterator",
get next() {
log.push({
name: "get next",
thisValue: this
});
return function() {
log.push({
name: "call next",
thisValue: this,
args: [...arguments]
});
nextCount++;
if (nextCount == 1) {
return {
name: "next-promise-1",
get then() {
log.push({
name: "get next then (1)",
thisValue: this
});
return function(resolve) {
log.push({
name: "call next then (1)",
thisValue: this,
args: [...arguments]
});
resolve({
name: "next-result-1",
get value() {
log.push({
name: "get next value (1)",
thisValue: this
});
return "next-value-1";
},
get done() {
log.push({
name: "get next done (1)",
thisValue: this
});
return false;
}
});
};
}
};
}
return {
name: "next-promise-2",
get then() {
log.push({
name: "get next then (2)",
thisValue: this
});
return function(resolve) {
log.push({
name: "call next then (2)",
thisValue: this,
args: [...arguments]
});
resolve({
name: "next-result-2",
get value() {
log.push({
name: "get next value (2)",
thisValue: this
});
return "next-value-2";
},
get done() {
log.push({
name: "get next done (2)",
thisValue: this
});
return true;
}
});
};
}
};
};
}
};
};
}
};
var callCount = 0;
async function *gen() {
callCount += 1;
log.push({ name: "before yield*" });
var v = yield* obj;
log.push({
name: "after yield*",
value: v
});
return "return-value";
}
var iter = gen();
assert.sameValue(log.length, 0, "log.length");
iter.next("next-arg-1").then(v => {
assert.sameValue(log[0].name, "before yield*");
assert.sameValue(log[1].name, "get [Symbol.asyncIterator]");
assert.sameValue(log[1].thisValue, obj, "get [Symbol.asyncIterator] thisValue");
assert.sameValue(log[2].name, "call [Symbol.asyncIterator]");
assert.sameValue(log[2].thisValue, obj, "[Symbol.asyncIterator] thisValue");
assert.sameValue(log[2].args.length, 0, "[Symbol.asyncIterator] args.length");
assert.sameValue(log[3].name, "get next");
assert.sameValue(log[3].thisValue.name, "asyncIterator", "get next thisValue");
assert.sameValue(log[4].name, "call next");
assert.sameValue(log[4].thisValue.name, "asyncIterator", "next thisValue");
assert.sameValue(log[4].args.length, 1, "next args.length");
assert.sameValue(log[4].args[0], undefined, "next args[0]");
assert.sameValue(log[5].name, "get next then (1)");
assert.sameValue(log[5].thisValue.name, "next-promise-1", "get next then thisValue");
assert.sameValue(log[6].name, "call next then (1)");
assert.sameValue(log[6].thisValue.name, "next-promise-1", "next then thisValue");
assert.sameValue(log[6].args.length, 2, "next then args.length");
assert.sameValue(typeof log[6].args[0], "function", "next then args[0]");
assert.sameValue(typeof log[6].args[1], "function", "next then args[1]");
assert.sameValue(log[7].name, "get next done (1)");
assert.sameValue(log[7].thisValue.name, "next-result-1", "get next done thisValue");
assert.sameValue(log[8].name, "get next value (1)");
assert.sameValue(log[8].thisValue.name, "next-result-1", "get next value thisValue");
assert.sameValue(v.value, "next-value-1");
assert.sameValue(v.done, false);
assert.sameValue(log.length, 9, "log.length");
iter.next("next-arg-2").then(v => {
assert.sameValue(log[9].name, "call next");
assert.sameValue(log[9].thisValue.name, "asyncIterator", "next thisValue");
assert.sameValue(log[9].args.length, 1, "next args.length");
assert.sameValue(log[9].args[0], "next-arg-2", "next args[0]");
assert.sameValue(log[10].name, "get next then (2)");
assert.sameValue(log[10].thisValue.name, "next-promise-2", "get next then thisValue");
assert.sameValue(log[11].name, "call next then (2)");
assert.sameValue(log[11].thisValue.name, "next-promise-2", "next then thisValue");
assert.sameValue(log[11].args.length, 2, "next then args.length");
assert.sameValue(typeof log[11].args[0], "function", "next then args[0]");
assert.sameValue(typeof log[11].args[1], "function", "next then args[1]");
assert.sameValue(log[12].name, "get next done (2)");
assert.sameValue(log[12].thisValue.name, "next-result-2", "get next done thisValue");
assert.sameValue(log[13].name, "get next value (2)");
assert.sameValue(log[13].thisValue.name, "next-result-2", "get next value thisValue");
assert.sameValue(log[14].name, "after yield*");
assert.sameValue(log[14].value, "next-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);
assert.sameValue(callCount, 1);