// This file was procedurally generated from the following sources:
// - src/async-generators/yield-star-getiter-sync-returns-null-throw.case
// - src/async-generators/default/async-class-decl-method.template
/*---
description: Non object returned by [Symbol.iterator]() - null (Async Generator method as a ClassDeclaration element)
esid: prod-AsyncGeneratorMethod
features: [Symbol.iterator, async-iteration]
flags: [generated, async]
info: |
ClassElement :
MethodDefinition
MethodDefinition :
AsyncGeneratorMethod
Async Generator Function Definitions
AsyncGeneratorMethod :
async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
YieldExpression: yield * AssignmentExpression
1. Let exprRef be the result of evaluating AssignmentExpression.
2. Let value be ? GetValue(exprRef).
3. Let generatorKind be ! GetGeneratorKind().
4. Let iterator be ? GetIterator(value, generatorKind).
...
GetIterator ( obj [ , hint ] )
...
3. If hint is async,
a. Set method to ? GetMethod(obj, @@asyncIterator).
i. Let syncMethod be ? GetMethod(obj, @@iterator).
ii. Let syncIterator be ? Call(syncMethod, obj).
iii. Return ? CreateAsyncFromSyncIterator(syncIterator).
...
CreateAsyncFromSyncIterator(syncIterator)
1. If Type(syncIterator) is not Object, throw a TypeError exception.
...
---*/
var obj = {
[Symbol.iterator]() {
return null;
}
};
var callCount = 0;
class C { async *gen() {
callCount += 1;
yield* obj;
throw new Test262Error('abrupt completion closes iter');
}}
var gen = C.prototype.gen;
var iter = gen();
iter.next().then(() => {
throw new Test262Error('Promise incorrectly fulfilled.');
}, v => {
assert.sameValue(v.constructor, TypeError, "TypeError");
iter.next().then(({ done, value }) => {
assert.sameValue(done, true, 'the iterator is completed');
assert.sameValue(value, undefined, 'value is undefined');
}).then($DONE, $DONE);
}).catch($DONE);
assert.sameValue(callCount, 1);