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#!/usr/bin/perl -w
use strict;
use Test::More (tests => 6);
BEGIN {use Chart::Gnuplot;}
# Test plotting from Perl arrays of x coordinates and y coordinates
{
my @x = (-10 .. 10);
my @y = (0 .. 20);
my $d = Chart::Gnuplot::DataSet->new(
xdata => \@x,
ydata => \@y,
);
$d->_thaw();
ok(&diff($d->{_data}, "dataSrc_1.dat") == 0);
}
# Test plotting from Perl array of x-y pairs
{
my @xy = (
[1, 2],
[3, 1],
[5, 0],
[6, 1],
[7, 2],
[9, 3],
);
my $d = Chart::Gnuplot::DataSet->new(
points => \@xy,
);
$d->_thaw();
ok(&diff($d->{_data}, "dataSrc_2.dat") == 0);
}
# Test plotting from data file
{
my $infile = "dataSrc_3.dat";
$infile = "t/".$infile if (!-e $infile);
my $d = Chart::Gnuplot::DataSet->new(
datafile => $infile,
);
my $string = $d->_thaw();
ok($string eq "'$infile' title \"\"");
}
# Test plotting from mathematical expression
{
my $d = Chart::Gnuplot::DataSet->new(
func => "sin(x)",
);
my $string = $d->_thaw();
ok($string eq 'sin(x) title ""');
}
# Test plotting 2D parametric function
{
my $c = Chart::Gnuplot->new(
output => "temp.ps",
);
my $d = Chart::Gnuplot::DataSet->new(
func => {
x => 'sin(t)',
y => 'cos(t)',
},
);
$c->_setChart([$d]);
my $s = $d->_thaw();
ok($s eq 'sin(t),cos(t) title ""' && defined $c->{parametric});
}
# Test plotting 3D parametric function
{
my $c = Chart::Gnuplot->new(
output => "temp.ps",
);
# A torus
my $d = Chart::Gnuplot::DataSet->new(
func => {
x => 'cos(u)*(4+cos(v))',
y => 'sin(u)*(4+cos(v))',
z => 'sin(v)',
},
);
$c->_setChart([$d]);
my $s = $d->_thaw();
ok($s eq 'cos(u)*(4+cos(v)),sin(u)*(4+cos(v)),sin(v) title ""' &&
defined $c->{parametric});
}
###################################################################
# Compare two files
# - return 0 if two files are the same, except the ordering of the lines
# - return 1 otherwise
sub diff
{
my ($f1, $f2) = @_;
$f2 = "t/".$f2 if (!-e $f2);
open(F1, $f1) || return(1);
open(F2, $f2) || return(1);
my @c1 = <F1>;
my @c2 = <F2>;
close(F1);
close(F2);
return(0) if (join("", sort @c1) eq join("", sort @c2));
return(1);
}
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