ヤミRoot VoidGate

Viewing: pp-15jd.t

BEGIN {
    $ENV{PERL_DATETIME_PP} = 1;
}

use strict;
use warnings;

use Test::More;

use DateTime;

# Borrowed from Matt Sergeant's Time::Piece

# A table of MJD and components
my @mjd = (
    '51603.524' => {
        year   => 2000,
        month  => 2,
        day    => 29,
        hour   => 12,
        minute => 34,
        second => 56,
    },

    '40598.574' => {
        year   => 1970,
        month  => 1,
        day    => 12,
        hour   => 13,
        minute => 46,
        second => 51,
    },

    '52411.140' => {
        year   => 2002,
        month  => 5,
        day    => 17,
        hour   => 3,
        minute => 21,
        second => 43,
    },

    '53568.547' => {
        year   => 2005,
        month  => 7,
        day    => 17,
        hour   => 13,
        minute => 8,
        second => 23,
    },

    '52295.218' => {
        year   => 2002,
        month  => 1,
        day    => 21,
        hour   => 5,
        minute => 13,
        second => 20,
    },

    '52295.399' => {
        year   => 2002,
        month  => 1,
        day    => 21,
        hour   => 9,
        minute => 35,
        second => 3,
    },

    # beginning of MJD
    '0.000' => {
        year   => 1858,
        month  => 11,
        day    => 17,
        hour   => 0,
        minute => 0,
        second => 0,
    },

    # beginning of JD
    '-2400000.500' => {
        year   => -4713,
        month  => 11,
        day    => 24,
        hour   => 12,
        minute => 0,
        second => 0,
    },
);

while ( my ( $mjd, $comps ) = splice @mjd, 0, 2 ) {
    my $dt = DateTime->new(
        %$comps,
        time_zone => 'UTC',
    );

    is( sprintf( '%.3f', $dt->mjd ), $mjd, "MJD should be $mjd" );

    my $jd = sprintf( '%.3f', $mjd + 2_400_000.5 );
    is( sprintf( '%.3f', $dt->jd ), $jd, "JD should be $jd" );
}

done_testing();

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