text: // Copyright (C) 2021 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  esid: sec-temporal.calendar.prototype.day
  description: Temporal.Calendar.prototype.day will take ISO8601 string and return
    the value of the day.
  info: |
    4. If Type(temporalDateLike) is not Object or temporalDateLike does not have
      an [[InitializedTemporalDate]] or [[InitializedTemporalYearMonth]] internal
      slot, then
      a. Set temporalDateLike to ? ToTemporalDate(temporalDateLike).
    5. Return ! ISODay(temporalDateLike).
  features: [Temporal]
  ---*/
  let cal = new Temporal.Calendar("iso8601");
  
  assert.sameValue(cal.day("2019-03-15"), 15, 'cal.day("2019-03-15") must return 15');
  