DateDiffGreaterThanAssert is throwing violations when it shouldn't

[rplopes]

Example where we assert that a date 13 years and 2 days ago is older than 13 years ago:

is.dateDiffGreaterThan(13, { unit: 'years' }).check(moment().subtract(13, 'years').subtract(2, 'days').toDate())

Expected result:

true

Actual result:

// Violation (DateDiffGreaterThan)

This seems to be because this diff is being calculated at the unit's granularity (years, in this example), so 13 years and 2 days ago is rounded to 13 years ago, which is equal, not greater than the assert date.

[pedrobranco]

Don't know if this assert (and other date asserts) supposedly should be able to compare two dates.

Testing if 2015-12-31 if is greater than or equal to date 2016-01-01:

is.dateDiffGreaterThanOrEqualTo(0, { fromDate: new Date('2016-01-01') }).check(new Date('2015-12-31'))

Expected result:

// Violation (DateDiffGreaterThanOrEqualTo)

Actual result:

true