/**
 * @fileoverview Tests that various formats of date are understood by dygraphs.
 *
 * @author dan@dygraphs.com (Dan Vanderkam)
 */

import * as utils from '../../src/dygraph-utils';

describe("date-formats", function() {

it('testISO8601', function() {
  // Format: YYYY-MM-DDTHH:MM:SS.ddddddZ
  // The "Z" indicates UTC, so this test should pass regardless of the time
  // zone of the machine on which it is run.

  // Firefox <4 does not support this format:
  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse
  if (navigator.userAgent.indexOf("Firefox/3.5") == -1) {
    assert.equal(946816496789, utils.dateParser("2000-01-02T12:34:56.789012Z"));
  }
});

it('testHyphenatedDate', function() {
  // Format: YYYY-MM-DD HH:MM

  // Midnight February 2, 2000, UTC
  var d = new Date(Date.UTC(2000, 1, 2));

  // Convert to a string in the local time zone: YYYY-DD-MM HH:MM
  var zp = function(x) { return x < 10 ? '0' + x : x; };
  var str = d.getFullYear() + '-' +
            zp(1 + d.getMonth()) + '-' +
            zp(d.getDate()) + ' ' +
            zp(d.getHours()) + ':' +
            zp(d.getMinutes());
  assert.equal(Date.UTC(2000, 1, 2), utils.dateParser(str));
});

it('testMillisecondsDate', function() {
  // Format: YYYY-MM-DD HH:MM:SS.MS

  // Midnight February 2, 2000 14:25:42.123 UTC
  var ts = Date.UTC(2000, 1, 2, 14, 25, 42, 123);
  assert.equal("2000/02/02 14:25:42.123", utils.dateString_(ts, true));
});

});
