Equality incorrect for quantity literals

[piotrszul]

Equality for quantity literals produces incorrect results (mostly {} instead for 'true' for equal literals)

(Equality exclusions)

Details

Expected: true but got: null ==> expected: <true> but was: <null>

• 1 year != 1 'a' [null]
• 12 months = 1 year [null]
• 1 year = 1 year [null]
• 1 month != 1 'mo' [null]
• 1 month = 30 days [null]
• 1 day = 24 hours [null]
• 10 'kg.m/s2' = 5 'kg' * 4 'm' / (2 seconds * 1000 'ms') [null]

[johngrimes]

Related to #2168.

[piotrszul]

Currently comparison is only implemented for UCUM unit quantities (which 'year' 'day' etc are not). So it does work for

• 1 'y' = 1 'y' but not for 1 year = 1 year
  Because 1 second is the same as 1 's' is works for both.

The last expression (10 'kg.m/s2' = 5 'kg' * 4 'm' / (2 seconds * 1000 'ms') [null]) is the same as #2168 - unsupported multiplication/division of quantities with non '1' units.