File: 12token_number.t

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libparser-mgc-perl 0.22-1
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#!/usr/bin/perl

use v5.14;
use warnings;

use Test2::V0;

package TestParser {
   use base qw( Parser::MGC );

   sub parse
   {
      my $self = shift;

      return $self->token_number;
   }
}

my $parser = TestParser->new;

# We're going to be testing floating point values.
sub approx
{
   my ( $got, $exp, $name ) = @_;

   ok( abs( $got - $exp ) < 1E-12, $name ) or
      diag( "Expected approximately $exp, got $got" );
}

is( $parser->from_string( "123" ), 123, 'Decimal integer' );
approx( $parser->from_string( "123.0" ), 123,    'Decimal integer' );
approx( $parser->from_string( "0.0" ),     0,    'Zero' );
approx( $parser->from_string( "12." ),    12,    'Trailing DP' );
approx( $parser->from_string( ".34" ),     0.34, 'Leading DP' );
approx( $parser->from_string( "8.9" ),     8.9,  'Infix DP' );

ok( dies { $parser->from_string( "hello" ) }, '"hello" fails' );

done_testing;