time-zone-2038-pst.js

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// |reftest| skip-if(!xulRuntime.shell)

assertEq(/^(PST|PDT)$/.test(getTimeZone()), true,

         "The default time zone is set to PST8PDT for all jstests (when run in the shell)");

// U.S. daylight saving rules changed in 2007, excerpt from tzdata's

// northamerica file:

// NAME  FROM  TO    IN   ON       AT    SAVE  LETTER/S

// US    1967  2006  Oct  lastSun  2:00  0     S

// US    1967  1973  Apr  lastSun  2:00  1:00  D

// US    1974  only  Jan  6        2:00  1:00  D

// US    1975  only  Feb  23       2:00  1:00  D

// US    1976  1986  Apr  lastSun  2:00  1:00  D

// US    1987  2006  Apr  Sun>=1   2:00  1:00  D

// US    2007  max   Mar  Sun>=8   2:00  1:00  D

// US    2007  max   Nov  Sun>=1   2:00  0     S

// When 2040 is mapped to 1984, the old U.S. rules are applied, i.e. DST isn't

// yet observed on March 31. If mapped to 2012, the new U.S. rules are applied

// and DST is already observed, which is the expected behaviour.

// A similar effect is visible in November.

// NOTE: This test expects that 2012 and 2040 use the same DST rules. If this

//       ever changes, the test needs to be updated accordingly.

    let dt1 = new Date(2040, Month.March, 31);

    assertDateTime(dt1, "Sat Mar 31 2040 00:00:00 GMT-0700 (PDT)", "Pacific Daylight Time");

    let dt2 = new Date(2040, Month.November, 1);

    assertDateTime(dt2, "Thu Nov 01 2040 00:00:00 GMT-0700 (PDT)", "Pacific Daylight Time");

// 2038 is mapped to 2027 instead of 1971.

    let dt1 = new Date(2038, Month.March, 31);

    assertDateTime(dt1, "Wed Mar 31 2038 00:00:00 GMT-0700 (PDT)", "Pacific Daylight Time");

    let dt2 = new Date(2038, Month.November, 1);

    assertDateTime(dt2, "Mon Nov 01 2038 00:00:00 GMT-0700 (PDT)", "Pacific Daylight Time");

if (typeof reportCompare === "function")

    reportCompare(true, true);