shithub: mc

ref: 19e038b0670828810453c284589469c6520aa7d9
dir: /lib/date/test/fmt.myr/

use std
use date

const main = {
	var buf : byte[1024]
	var d

	/* epoch */
	d = date.mkinstant(0, "")
	eq("1970-1-01 00:00:00 +0000", std.bfmt(buf[:], "{D}", d))

	/* epoch + 12 hours */
	d = date.mkinstant(12*3600*1_000_000, "")
	eq("1970-1-01 12:00:00 +0000", std.bfmt(buf[:], "{D}", d))

	/* epoch - 6 hours */
	d = date.mkinstant(-6*3600*1_000_000, "")
	eq("1969-12-31 18:00:00 +0000", std.bfmt(buf[:], "{D}", d))

	/* epoch - 12 hours */
	d = date.mkinstant(-12*3600*1_000_000, "")
	eq("1969-12-31 12:00:00 +0000", std.bfmt(buf[:], "{D}", d))

	/* more or less random: Fri 29 Aug 2014 07:47:43 PM UTC*/
	d = date.mkinstant(1_409_341_663*1_000_000, "")
	eq("2014-8-29 19:47:43 +0000", std.bfmt(buf[:], "{D}", d))

	/* large negative time stamp */
	d = date.mkinstant(-50000000000*1_000_000, "")
	eq("385-7-25 07:06:40 +0000", std.bfmt(buf[:], "{D}", d))

	/* date in the bc */
	d = date.mkinstant(-70000000000*1_000_000, "")
	eq("-249-11-19 19:33:20 +0000", std.bfmt(buf[:], "{D}", d))
}

const eq = {expected, actual
	if !std.sleq(expected, actual)
		std.fatal("expected date {}, got {}\n", expected, actual)
	;;
}