// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2025 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.plainyearmonth.from
description: Non-positive era years are remapped in gregory calendar
includes: [temporalHelpers.js]
features: [Temporal, Intl.Era-monthcode]
---*/

const calendar = "gregory";
const options = { overflow: "reject" };

const ce0 = Temporal.PlainYearMonth.from({ era: "ce", eraYear: 0, monthCode: "M01", calendar }, options);
TemporalHelpers.assertPlainYearMonth(
  ce0,
  0, 1, "M01", "CE 0 resolves to BCE 1",
  "bce", 1);

const ce1n = Temporal.PlainYearMonth.from({ era: "ce", eraYear: -1, monthCode: "M01", calendar }, options);
TemporalHelpers.assertPlainYearMonth(
  ce1n,
  -1, 1, "M01", "CE -1 resolves to BCE 2",
  "bce", 2);

const bce0 = Temporal.PlainYearMonth.from({ era: "bce", eraYear: 0, monthCode: "M01", calendar }, options);
TemporalHelpers.assertPlainYearMonth(
  bce0,
  1, 1, "M01", "BCE 0 resolves to CE 1",
  "ce", 1);

const bce1n = Temporal.PlainYearMonth.from({ era: "bce", eraYear: -1, monthCode: "M01", calendar }, options);
TemporalHelpers.assertPlainYearMonth(
  bce1n,
  2, 1, "M01", "BCE -1 resolves to CE 2",
  "ce", 2);

reportCompare(0, 0);