use Test::More;
use PDL;

BEGIN {
   eval "use PDL::Slatec;";
   if ( !$@ ) {
      eval "use PDL::Graphics::Limits;";
      plan tests => 3;
   } else {
      plan skip_all => 'PDL::Slatec not available';
   }
};

TODO: {

   local $TODO = 'Needs to use approx() for float tests';

   $x1 = pdl( 1, 2, 3 );
   $x2 = pdl( 2, 3, 4 );

   $xn = pdl( 0.5, 0.5, 0.5 );
   $xp = $xn / 2;

   $y1 = pdl( 10, 3, 4 );
   $y2 = pdl( -1, 2, 4 );

   @udsets = ( [ [ $x1, $xn ], $y1], [ $x2, $y2 ] );
   @range = limits( @udsets, { Bounds => 'MinMax', Clean => 'None', Trans => [ \&log10 ], } );

   is_deeply( \@range, [ log10(1-0.5), log10(4), -1, 10 ], 'x symmetric trans' );

   @udsets = ( [ [ $x1, $xn ], $y1], [ [ $x2, undef, $xp ], $y2 ] );
   @range = limits( @udsets, { Bounds => 'MinMax', Clean => 'None', Trans => [ \&log10 ], } );

   is_deeply( \@range, [ log10(1-0.5), log10(4+0.25), -1, 10 ], 'x asymmetric trans' );

   $y1 = pdl( 0.5, 1, 5 );
   $ys = pdl( 0.5, 0.5, 0.5 );
   @udsets = ( [ [ $y1, $ys ] ] );
   @range = limits( @udsets, { Bounds => 'MinMax', Clean => 'None', Trans => [ \&log10 ], } );

   is_deeply( \@range, [ log10(0.5), log10(5+0.5) ], 'illegal errbar lower bounds' );

}