JSTests/test262/test/language/statements/class/elements/gen-private-method/yield-spread-obj.js

// This file was procedurally generated from the following sources:
// - src/generators/yield-spread-obj.case
// - src/generators/default/class-decl-private-method.template
/*---
description: Use yield value in a object spread position (Generator private method as a ClassDeclaration element)
esid: prod-GeneratorPrivateMethod
features: [object-spread, generators, class-methods-private]
flags: [generated]
info: |
    ClassElement :
      PrivateMethodDefinition

    MethodDefinition :
      GeneratorMethod

    14.4 Generator Function Definitions

    GeneratorMethod :
      * PropertyName ( UniqueFormalParameters ) { GeneratorBody }


    Spread Properties

    PropertyDefinition[Yield]:
      (...)
      ...AssignmentExpression[In, ?Yield]

---*/

var callCount = 0;

class C {
    *#gen() {
        callCount += 1;
        yield {
            ...yield,
            y: 1,
            ...yield yield,
          };
    }
    get gen() { return this.#gen; }
}

const c = new C();

// Test the private fields do not appear as properties before set to value
assert.sameValue(Object.hasOwnProperty.call(C.prototype, "#gen"), false, 'Object.hasOwnProperty.call(C.prototype, "#gen")');
assert.sameValue(Object.hasOwnProperty.call(C, "#gen"), false, 'Object.hasOwnProperty.call(C, "#gen")');
assert.sameValue(Object.hasOwnProperty.call(c, "#gen"), false, 'Object.hasOwnProperty.call(c, "#gen")');

var iter = c.gen();

iter.next();
iter.next({ x: 42 });
iter.next({ x: 'lol' });
var item = iter.next({ y: 39 });

assert.sameValue(item.value.x, 42);
assert.sameValue(item.value.y, 39);
assert.sameValue(Object.keys(item.value).length, 2);
assert.sameValue(item.done, false);

assert.sameValue(callCount, 1);

// Test the private fields do not appear as properties after set to value
assert.sameValue(Object.hasOwnProperty.call(C.prototype, "#gen"), false, 'Object.hasOwnProperty.call(C.prototype, "#gen")');
assert.sameValue(Object.hasOwnProperty.call(C, "#gen"), false, 'Object.hasOwnProperty.call(C, "#gen")');
assert.sameValue(Object.hasOwnProperty.call(c, "#gen"), false, 'Object.hasOwnProperty.call(c, "#gen")');