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#!/usr/bin/perl
use v5.12;
use warnings;
use Test::More tests => 24;
use Test::Warn;
BEGIN { unshift @INC, 'lib', '../lib'}
my $module = 'Graphics::Toolkit::Color::Space::Util';
eval "use $module";
is( not($@), 1, 'could load the module');
my $round = \&Graphics::Toolkit::Color::Space::Util::round;
is( $round->(0.5), 1, 'round 0.5 upward');
is( $round->(0.500000001), 1, 'everything above 0.5 gets also increased');
is( $round->(0.4999999), 0, 'everything below 0.5 gets smaller');
is( $round->(-0.5), -1, 'round -0.5 downward');
is( $round->(-0.500000001), -1, 'everything beow -0.5 gets also lowered');
is( $round->(-0.4999999), 0, 'everything upward from -0.5 gets increased');
my $rmod = \&Graphics::Toolkit::Color::Space::Util::rmod;
my $close = \&Graphics::Toolkit::Color::Space::Util::close_enough;
is( $rmod->(), 0, 'default to 0 when both values missing');
is( $rmod->(1), 0, 'default to 0 when a value is missing');
is( $rmod->(1,0), 0, 'default to 0 when a divisor is zero');
is( $rmod->(3, 2), 1, 'normal int mod');
is( $close->($rmod->(2.1, 2), 0.1), 1, 'real mod when dividend is geater');
is( $close->($rmod->(.1, 2), 0.1), 1, 'real mod when divisor is geater');
is( $rmod->(-3, 2), -1, 'int mod with negative dividend');
is( $close->($rmod->(-3.1, 2), -1.1),1, 'real mod with negative dividend');
is( $rmod->(3, -2), 1, 'int mod with negative divisor');
is( $close->($rmod->(3.1, -2), 1.1), 1, 'real mod with negative divisor');
is( $rmod->(-3, -2), -1, 'int mod with negative divisor');
is( $close->($rmod->(-3.1, -2),-1.1),1, 'real mod with negative dividend and divisor');
is( $close->($rmod->(15.3, 4), 3.3), 1, 'real mod with different values');
my $min = \&Graphics::Toolkit::Color::Space::Util::min;
my $max = \&Graphics::Toolkit::Color::Space::Util::max;
is( $min->(1,2,3), 1 , 'simple minimum');
is( $min->(-1.1,2,3), -1.1, 'negative minimum');
is( $max->(1,2,3), 3, 'simple maximum');
is( $max->(-1,2,10E3), 10000, 'any syntax maximum');
exit 0;
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