JSTests/test262/test/language/statements/for-of/dstr/obj-prop-elem-init-fn-name-arrow.js

// This file was procedurally generated from the following sources:
// - src/dstr-assignment/obj-prop-elem-init-fn-name-arrow.case
// - src/dstr-assignment/default/for-of.template
/*---
description: Assignment of function `name` attribute (ArrowFunction) (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [destructuring-binding]
flags: [generated]
includes: [propertyHelper.js]
info: |
    IterationStatement :
      for ( LeftHandSideExpression of AssignmentExpression ) Statement

    1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« »,
       AssignmentExpression, iterate).
    2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
       keyResult, assignment, labelSet).

    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation

    [...]
    4. If destructuring is true and if lhsKind is assignment, then
       a. Assert: lhs is a LeftHandSideExpression.
       b. Let assignmentPattern be the parse of the source text corresponding to
          lhs using AssignmentPattern as the goal symbol.
    [...]

    AssignmentElement[Yield] : DestructuringAssignmentTarget Initializeropt
    [...] 7. If Initializer is present and v is undefined and
       IsAnonymousFunctionDefinition(Initializer) and IsIdentifierRef of
       DestructuringAssignmentTarget are both true, then
       a. Let hasNameProperty be HasOwnProperty(rhsValue, "name").
       b. ReturnIfAbrupt(hasNameProperty).
       c. If hasNameProperty is false, perform SetFunctionName(rhsValue,
          GetReferencedName(lref)).

---*/
var arrow;

var counter = 0;

for ({ x: arrow = () => {} } of [{}]) {
  verifyProperty(arrow, 'name', {
    enumerable: false,
    writable: false,
    configurable: true,
    value: 'arrow'
  });
  counter += 1;
}

assert.sameValue(counter, 1);