DateTime operators testing error breakdown (CqlDateTimeOperatorsTest)

[bryantaustin13]

CqlDateTimeOperatorsTest fails commentary:

1. "passCount": 274,
   "skipCount": 5,
   "failCount": 38,
   "errorCount": 0

2. Failing tests:
   A.
   DateTimeAddYearInWeeks Engine evaluates DateTime(2018, 5, 23) + 52 weeks to be "@2019-05-23T". It should evaluate to "@2019-05-22T"
   52 weeks = 364 days
   Adding 364 days to 2018-05-23 (2018 is not a leap year) lands one day before the same calendar date the next year
   See DateTime(2018, 5, 23) add/subtract weeks returns the wrong value clinical-reasoning#883 (comment).

   These fail the same way
   DateTimeLeapDayAddYearInWeeks
   DateTimeLeapYearAddYearInWeeks
   DateTimeSubtractYearInWeeks
   DateTimeLeapDaySubtractYearInWeeks
   DateTimeLeapYearSubtractYearInWeeks

B.
(interval differences)
DateTimeDurationBetweenUncertainInterval
DateTimeDurationBetweenUncertainInterval2
DateTimeDurationBetweenUncertainAdd
DateTimeDurationBetweenUncertainSubtract
DateTimeDurationBetweenUncertainMultiply

(Z in actual not in expected)
    DateTimeAdd5HoursWithLeftMinPrecisionSecond     
    DateTimeAdd5Seconds
    DateTimeAddSecondsOverflow
    DateTimeAdd5Milliseconds
    DateTimeAddMillisecondsOverflow
    DateTimeSecond
    DateTimeMillisecond
    DateTime1
    DateTime2
    DateTimeSubtract5Seconds
    DateTimeSubtract15HourPrecisionSecond
    DateTimeSubtractSecondsUnderflow
    DateTimeSubtract5Milliseconds
    DateTimeSubtractMillisecondsUnderflow

(actual === 1 vs 0)
    DurationInDaysA                                 
    DurationInDaysAA

(differing times)
    DateTimeAdd5Hours                   (actual missing 10 in time)
    DateTimeAddHoursOverflow            (actual missing 00 in time)
    DateTimeAdd5Minutes                 (actual missing 05:10 in time)
    DateTimeAddMinutesOverflow          (actual missing 06:00 in time)
    DateTimeHour                        (actual missing 20 in time)
    DateTimeMinute                      (actual missing 20:50 in time)
    DateTimeDurationBetweenYear         (actual is 5 and expected is an interval)
    DateTimeSubtract5Hours              (actual missing 05 in time)
    DateTimeSubtractHoursUnderflow      (actual missing 23 in time)
    DateTimeSubtract5Minutes            (actual missing 05:05 in time)
    DateTimeSubtractMinutesUnderflow    (actual missing 04:59 in time)