test262/test/language/expressions/class/async-gen-method-yield-spread-arr-single.js

// This file was procedurally generated from the following sources:
// - src/async-generators/yield-spread-arr-single.case
// - src/async-generators/default/async-class-expr-method.template
/*---
description: Use yield value in a array spread position (Async generator method as a ClassExpression element)
esid: prod-AsyncGeneratorMethod
features: [async-iteration]
flags: [generated, async]
info: |
    ClassElement :
      MethodDefinition

    MethodDefinition :
      AsyncGeneratorMethod

    Async Generator Function Definitions

    AsyncGeneratorMethod :
      async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }


    Array Initializer

    SpreadElement[Yield, Await]:
      ...AssignmentExpression[+In, ?Yield, ?Await]

---*/
var arr = ['a', 'b', 'c'];


var callCount = 0;

var C = class { async *gen() {
    callCount += 1;
    yield [...yield];
}}

var gen = C.prototype.gen;

var iter = gen();

iter.next(false);
var item = iter.next(arr);

item.then(({ done, value }) => {
  assert.notSameValue(value, arr, 'value is a new array');
  assert(Array.isArray(value), 'value is an Array exotic object');
  assert.sameValue(value.length, 3)
  assert.sameValue(value[0], 'a');
  assert.sameValue(value[1], 'b');
  assert.sameValue(value[2], 'c');
  assert.sameValue(done, false);
}).then($DONE, $DONE);

assert.sameValue(callCount, 1);