text: // Copyright (C) 2022 Igalia, S.L. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  esid: sec-temporal.calendar.prototype.monthcode
  description: >
    Appropriate error thrown when argument cannot be converted to a valid string
    or property bag for PlainDate
  features: [BigInt, Symbol, Temporal]
  ---*/
  
  const instance = new Temporal.Calendar("iso8601");
  
  const rangeErrorTests = [
    [undefined, "undefined"],
    [null, "null"],
    [true, "boolean"],
    ["", "empty string"],
    [1, "number that doesn't convert to a valid ISO string"],
    [1n, "bigint"],
  ];
  
  for (const [arg, description] of rangeErrorTests) {
    assert.throws(RangeError, () => instance.monthCode(arg), `${description} does not convert to a valid ISO string`);
  }
  
  const typeErrorTests = [
    [Symbol(), "symbol"],
    [{}, "plain object"],
    [Temporal.PlainDate, "Temporal.PlainDate, object"],
    [Temporal.PlainDate.prototype, "Temporal.PlainDate.prototype, object"],
  ];
  
  for (const [arg, description] of typeErrorTests) {
    assert.throws(TypeError, () => instance.monthCode(arg), `${description} is not a valid property bag and does not convert to a string`);
  }
  