test262/src/class-elements/static-field-anonymous-function-length.case

// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: Anonymous function in field initilizer have length properly set
info: |
  Updated Productions

  ClassElement :
    ...
    static FieldDefinition ;

  FieldDefinition :
    ClassElementName Initializer_opt

  ClassDefinitionEvaluation:
    ...

    27. Let staticFields be a new empty List.
    28. For each ClassElement e in order from elements,
      a. If IsStatic of e is false, then
      ...
      b. Else,
        i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
      c. If field is an abrupt completion, then
        ...
      d. If field is not empty,
        i. If IsStatic of e is false, append field to instanceFields.
        ii. Otherwise, append field to staticFields.

    34. For each item fieldRecord in order from staticFields,
      a. Perform ? DefineField(F, field).
    ...

  DefineField(receiver, fieldRecord)
    1. Assert: Type(receiver) is Object.
    2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
    3. Let name be fieldRecord.[[Name]].
    4. Let initializer be fieldRecord.[[Initializer]].
    5. If initializer is not empty, then
      a. Let initValue be ? Call(initializer, receiver).
    ...
template: default
features: [class-static-fields-private, class-static-fields-public]
---*/

//- elements
static #field = (a, b) => undefined;
static field = function() {};

static accessPrivateField() {
  return this.#field;
}

//- assertions
assert.sameValue(C.accessPrivateField().length, 2);
assert.sameValue(C.field.length, 0);