JSTests/test262/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-unresolvable.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding-for-await/obj-ptrn-prop-id-init-unresolvable.case
// - src/dstr-binding-for-await/error/for-await-of-async-gen-let.template
/*---
description: Destructuring initializer is an unresolvable reference (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [destructuring-binding, async-iteration]
flags: [generated, async]
info: |
    IterationStatement :
        for await ( var ForBinding of AssignmentExpression ) Statement

    [...]
    2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
        varBinding, labelSet, async).

    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation

    [...]
    4. Let destructuring be IsDestructuring of lhs.
    [...]
    6. Repeat
       [...]
       j. If destructuring is false, then
          [...]
       k. Else
          i. If lhsKind is assignment, then
             [...]
          ii. Else if lhsKind is varBinding, then
              [...]
          iii. Else,
               1. Assert: lhsKind is lexicalBinding.
               2. Assert: lhs is a ForDeclaration.
               3. Let status be the result of performing BindingInitialization
                  for lhs passing nextValue and iterationEnv as arguments.
          [...]

    13.3.3.7 Runtime Semantics: KeyedBindingInitialization

    BindingElement : BindingPattern Initializer_opt

    [...]
    4. If Initializer is present and v is undefined, then
       a. Let defaultValue be the result of evaluating Initializer.
       b. Set v to ? GetValue(defaultValue).

    6.2.4.1 GetValue ( V )

    1. ReturnIfAbrupt(V).
    2. If Type(V) is not Reference, return V.
    3. Let base be GetBase(V).
    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
---*/

async function * gen() {
  for await (let { x: y = unresolvableReference } of [{}]) {
    return;
  }
}

gen().next()
  .then(_ => {
    throw new Test262Error("Expected async function to reject, but resolved.");
  }, ({ constructor }) => {
    assert.sameValue(constructor, ReferenceError);
    
  })
  .then($DONE, $DONE);