JSTests/test262/test/language/expressions/function/dstr/obj-ptrn-id-init-throws.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-id-init-throws.case
// - src/dstr-binding/error/func-expr.template
/*---
description: Error thrown when evaluating the initializer (function expression)
esid: sec-function-definitions-runtime-semantics-evaluation
es6id: 14.1.20
features: [destructuring-binding]
flags: [generated]
info: |
    FunctionExpression : function ( FormalParameters ) { FunctionBody }

        [...]
        3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody,
           scope, strict).
        [...]

    9.2.1 [[Call]] ( thisArgument, argumentsList)

    [...]
    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
    [...]

    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )

    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
    [...]

    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)

    [...]
    23. Let iteratorRecord be Record {[[iterator]]:
        CreateListIterator(argumentsList), [[done]]: false}.
    24. If hasDuplicates is true, then
        [...]
    25. Else,
        b. Let formalStatus be IteratorBindingInitialization for formals with
           iteratorRecord and env as arguments.
    [...]

    13.3.3.7 Runtime Semantics: KeyedBindingInitialization

    SingleNameBinding : BindingIdentifier Initializeropt

    [...]
    6. If Initializer is present and v is undefined, then
       a. Let  defaultValue be the result of evaluating Initializer.
       b. Let v be GetValue(defaultValue).
       c. ReturnIfAbrupt(v).
---*/
function thrower() {
  throw new Test262Error();
}

var f = function({ x = thrower() }) {};

assert.throws(Test262Error, function() {
  f({});
});