String.prototype.has = function (s) {
  return this.includes(s);
};

function dt(locale) {
  var date = new Date("2008-06-30T13:56:34");
  const dtOptions = {
    year: "numeric",
    month: "long",
    day: "numeric",
    hour: "numeric",
    minute: "numeric",
    second: "numeric",
  };
  return date.toLocaleString(locale, dtOptions);
}

var all_passed = true;
const tests = [
  [dt("en-US").has("June"), "month name in en-US"],
  [dt("en-US").has("2008"), "year in en-US"],
  [dt("da").has("jun"), "month name in da"],
  [dt("da-DK") == dt("da"), "da same as da-DK"],
  [
    dt("en-GB").has("30") &&
      dt("en-GB").has("June") &&
      dt("en-GB").indexOf("30") < dt("en-GB").indexOf("June"),
    "day before month in en-GB",
  ],
  [
    dt("en-US").has("30") &&
      dt("en-US").has("June") &&
      dt("en-US").indexOf("30") > dt("en-US").indexOf("June"),
    "month before day in en-US",
  ],
  [dt("ja-JP").has("\u5E746\u670830\u65E5"), "year month and day in ja-JP"],
  // The Firefox locale code ja-JP-mac will be resolved to a BCP47-compliant
  // tag ja-JP-x-lvariant-mac by uloc_toLanguageTag
  [
    dt("ja-JP") == dt("ja-JP-x-lvariant-mac"),
    "ja-JP-x-lvariant-mac same as ja-JP",
  ],
  [dt("nn-NO").has("juni"), "month name in nn-NO"],
  [dt("nb-NO").has("juni"), "month name in nb-NO"],
  // Bug 1261775 - failures on win10
  //[dt("no-NO").has("30. juni"), "month name in no-NO"],
  [dt("sv-SE").has("30 jun"), "month name in sv-SE"],
  [dt("kok").has("\u091C\u0942\u0928"), "month name in kok"],
  [dt("ta-IN").has("\u0B9C\u0BC2\u0BA9\u0BCD"), "month name in ta-IN"],
  [!!dt("ab-CD").length, "fallback for ab-CD"],
];

function one_test(testcase, msg) {
  if (!testcase) {
    all_passed = false;
    dump("Unexpected date format: " + msg + "\n");
  }
}

function run_test() {
  for (var i = 0; i < tests.length; ++i) {
    one_test(tests[i][0], tests[i][1]);
  }
  Assert.ok(all_passed);
}