"use strict";

var { ObjectUtils } = ChromeUtils.import(
  "resource://gre/modules/ObjectUtils.jsm"
);
var { PromiseTestUtils } = ChromeUtils.importESModule(
  "resource://testing-common/PromiseTestUtils.sys.mjs"
);

add_task(async function test_strict() {
  let loose = { a: 1 };
  let strict = ObjectUtils.strict(loose);

  loose.a; // Should not throw.
  loose.b || undefined; // Should not throw.

  strict.a; // Should not throw.
  PromiseTestUtils.expectUncaughtRejection(/No such property: "b"/);
  Assert.throws(() => strict.b, /No such property: "b"/);
  "b" in strict; // Should not throw.
  strict.b = 2;
  strict.b; // Should not throw.

  PromiseTestUtils.expectUncaughtRejection(/No such property: "c"/);
  Assert.throws(() => strict.c, /No such property: "c"/);
  "c" in strict; // Should not throw.
  loose.c = 3;
  strict.c; // Should not throw.
});