JSTests/test262/test/language/statements/class/elements/static-field-initializer-error.js

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

/*---
description: Class evaluation is incomplete when initializer resutls in an abrupt completition
esid: sec-define-field
info: |
  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).
    6. Else, let initValue be undefined.
    7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
      a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
      b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
    8. If fieldName is a Private Name,
      a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
    9. Else,
      a. Assert: IsPropertyKey(fieldName) is true.
      b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
    10. Return.
features: [class-static-fields-public, class]
---*/

function initThrows() {
  throw new Test262Error();
}

assert.throws(Test262Error, function() {
  class C {
    static f = initThrows();
    static g;
  };

  assert(false, 'this should never execute');
}, 'static field initializer should throw exception');