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Issue #390 #400

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Issue #390 #400

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79af971
Issue390: Re-worked nbt file, added negative time format and tests
DamienBradleyDSP Mar 15, 2024
4ecec67
Issue390: Added new unit tests
DamienBradleyDSP Mar 18, 2024
581fae1
Issue390: Removed redundant negative time tests
DamienBradleyDSP Apr 5, 2024
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58 changes: 58 additions & 0 deletions examples/datetime_human_tests.nbt
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Original file line number Diff line number Diff line change
@@ -1,7 +1,13 @@
assert((0 second -> human) == "0 seconds")
assert((0.1 second -> human) == "0.100 seconds")
assert((0.01 second -> human) == "0.010 seconds")
assert((0.001 second -> human) == "0.001 seconds")

assert((1 second -> human) == "1 second")
assert((5 second -> human) == "5 seconds")
assert((1.5 second -> human) == "1.500 seconds")
assert((2.55 second -> human) == "2.550 seconds")
assert((5.99999 second -> human) == "5.999990 seconds")

assert((60 seconds -> human) == "1 minute")
assert((73 seconds -> human) == "1 minute + 13 seconds")
Expand All @@ -22,7 +28,20 @@ assert((1.37 day -> human) == "1 day + 8 hours + 52 minutes + 48 seconds
assert((1 week -> human) == "7 days")
assert((1.5 weeks -> human) == "10 days + 12 hours")
assert((2 weeks -> human) == "14 days")
assert((4.566 weeks -> human) == "31 days + 23 hours + 5 minutes + 16.800 seconds")

assert((1 year -> human) == "365 days + 5 hours + 48 minutes + 45.051840004 seconds")
assert((3.45 years -> human) == "1260 days")

assert((1 month -> human) == "30 days + 10 hours + 29 minutes + 3.754320 seconds")
assert((3.78 months -> human) == "115 days + 1 hour + 13 minutes + 51.391329601 seconds")
assert((1 gregorian_year -> human) == "365 days + 5 hours + 49 minutes + 12 seconds")
assert((2.34 gregorian_year -> human) == "854 days + 16 hours + 1 minute + 7.679999992 seconds")
assert((1 julian_year -> human) == "365 days + 6 hours")
assert((1.06 julian_year -> human) == "387 days + 3 hours + 57 minutes + 36 seconds")
assert((1 decade -> human) == "3652 days")
assert((1 century -> human) == "36524 days")
assert((1 millennium -> human) == "365_242 days")
assert((1 sidereal_day -> human) == "23 hours + 56 minutes + 4.090500 seconds")

assert((10000 days -> human) == "10000 days")
Expand All @@ -32,7 +51,46 @@ assert((1e12 days -> human) == "1_000_000_000_000 days")
assert((1e15 days -> human) == "1.0e+15 days")

assert((1 ms -> human) == "0.001 seconds")
assert((12 ms -> human) == "0.012 seconds")
assert((342 ms -> human) == "0.342 seconds")

assert((1 µs -> human) == "0.000001 seconds")
assert((1245 µs -> human) == "0.001245 seconds")
assert((1236876 µs -> human) == "1.236876 seconds")

assert((1 ns -> human) == "0.000000001 seconds")
assert((1234 ns -> human) == "0.000001234 seconds")
assert((1s + 1234 ns -> human) == "1.000001234 seconds")

assert((-1 second -> human) == "1 second ago")
assert((-25 seconds -> human) == "25 seconds ago")
assert((-49.010 seconds -> human) == "49.010 seconds ago")

assert((-2.5 minute -> human) == "2 minutes + 30 seconds ago")
assert((-1 hour -> human) == "1 hour ago")
assert((-3 hour -> human) == "3 hours ago")
assert((-5.34 hour -> human) == "5 hours + 20 minutes + 24 seconds ago")
assert((-7.89 hour -> human) == "7 hours + 53 minutes + 24 seconds ago")
assert((-7.89 hour - 4 minutes -> human) == "7 hours + 57 minutes + 24 seconds ago")

assert((-1 day -> human) == "1 day ago")
assert((-4.6 days -> human) == "4 days + 14 hours + 23 minutes ago")
assert((-9.2345 days -> human) == "9 days + 5 hours + 37 minutes + 40.800 seconds ago")
assert((-9.2345 days + 52 hours -> human) == "7 days + 1 hour + 37 minutes + 40.800 seconds ago")

assert((-2 weeks -> human) == "14 days ago")
assert((-4.5 weeks -> human) == "31 days + 12 hours ago")
assert((-20.5 weeks -> human) == "143 days + 12 hours ago")

assert((-2.5 months -> human) == "76 days + 2 hours + 12 minutes + 39.385800 seconds ago")
assert((-2.5 years -> human) == "913 days + 2 hours + 31 minutes + 52.629600003 seconds ago")
assert((-10.5 decades -> human) == "38350 days ago")

assert((-25 ms -> human) == "0.025 seconds ago")
assert((-6400 ms -> human) == "6.400 seconds ago")

assert((-2500 µs -> human) == "0.002500 seconds ago")
assert((-40525 µs -> human) == "0.040525 seconds ago")

assert((-5147 ns -> human) == "0.000005147 seconds ago")
assert((-23s + 1234 ns -> human) == "22.999998766 seconds ago")
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The logic for "… ago" is relatively simple, right? In that case, we don't need to repeat all these tests here.

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True but does protect against changes if someone switches the logic in some way in the future, and with the test base's overall speed I'd say it doesn't hurt anyone to keep these in

I can remove some of the more redundant cases though if you'd prefer

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True but does protect against changes if someone switches the logic in some way in the future, and with the test base's overall speed I'd say it doesn't hurt anyone to keep these in

Speed is not the matter, but humans are going to read those tests and wonder what they are for. I would really prefer if we strip down the negative-time-duration tests to one or two.

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Updated as requested

45 changes: 31 additions & 14 deletions numbat/modules/datetime/human.nbt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,34 +3,51 @@ use core::strings
use units::si
use datetime::functions

fn _human_num_days(time: Time) -> Scalar = floor(time / day)
fn _human_num_days(time: Time) -> Time = floor(time / day)*day

fn _human_num_hours(time: Time) -> Time = floor(time / hours)*hour

fn _human_num_minutes(time: Time) -> Time = floor(time / minutes)*minute

fn _human_num_seconds(time: Time) -> Time = (time / seconds)second

fn _seconds_on_stopwatch(time: Time) -> Time = _human_num_seconds(time)-_human_num_seconds(_human_num_minutes(time))

fn _minutes_on_clock(time: Time) -> Time = _human_num_minutes(time)-_human_num_minutes(_human_num_hours(time))

fn _hours_of_a_day(time: Time) -> Time = _human_num_hours(time)-_human_num_hours(_human_num_days(time))

fn _human_join(a: String, b: String) -> String =
if str_slice(a, 0, 2) == "0 " then b else if str_slice(b, 0, 2) == "0 " then a else "{a} + {b}"

fn _remove_plural_suffix(str: String) -> String =
if str_slice(str, 0, 2) == "1 " then str_slice(str, 0, str_length(str) - 1) else str

fn _human_seconds(dt: DateTime) -> String =
_remove_plural_suffix(format_datetime("%-S%.f seconds", dt))
fn _human_formatted_seconds(time: Time) -> String =
_remove_plural_suffix(format_datetime("%-S%.f seconds", datetime("0001-01-01T00:00:00Z") + _seconds_on_stopwatch(time)))

fn _human_minutes(dt: DateTime) -> String =
_remove_plural_suffix(format_datetime("%-M minutes", dt))
fn _human_formatted_minutes(time: Time) -> String =
_remove_plural_suffix("{_minutes_on_clock(time)/minute} minutes")

fn _human_hours(dt: DateTime) -> String =
_remove_plural_suffix(format_datetime("%-H hours", dt))
fn _human_formatted_hours(time: Time) -> String =
_remove_plural_suffix("{_hours_of_a_day(time)/hour} hours")

fn _human_days(num_days: Scalar) -> String =
_remove_plural_suffix("{num_days} days")
fn _human_formatted_days(num_days: Time) -> String =
_remove_plural_suffix("{_human_num_days(num_days)/day} days")

fn _human_readable_duration(time: Time, dt: DateTime, num_days: Scalar) -> String =
_human_join(_human_join(_human_join(_human_days(_human_num_days(time)), _human_hours(dt)), _human_minutes(dt)), _human_seconds(dt))
fn _human_readable_duration(time: Time) -> String =
_human_join(_human_join(_human_join(_human_formatted_days(time), _human_formatted_hours(time)), _human_formatted_minutes(time)), _human_formatted_seconds(time))

# Implementation details:
# we skip hours/minutes/seconds for durations larger than 1000 days because:
# (a) we run into floating point precision problems at the nanosecond level at this point
# (b) for much larger numbers, we can't convert to DateTimes anymore
fn human_time_check_overflow(time: Time) =
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can we please _-prefix this as well?

if _human_num_days(time) > 1000 days
then _human_formatted_days(time)
else _human_readable_duration(time)

fn human(time: Time) =
if _human_num_days(time) > 1000
then "{_human_num_days(time)} days"
else _human_readable_duration(time, datetime("0001-01-01T00:00:00Z") + time, _human_num_days(time))
if _human_num_seconds(time) < 0 seconds
then "{human_time_check_overflow(time*-1)} ago"
else human_time_check_overflow(time)
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