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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_float;
}
}
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" );
}
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' );
approx( $parser->from_string( "-4.0" ), -4, 'Negative decimal' );
approx( $parser->from_string( "1E0" ), 1, 'Scientific without DP' );
approx( $parser->from_string( "2.0E0" ), 2, 'Scientific with DP' );
approx( $parser->from_string( "3.E0" ), 3, 'Scientific with trailing DP' );
approx( $parser->from_string( ".4E1" ), 4, 'Scientific with leading DP' );
approx( $parser->from_string( "50E-1" ), 5, 'Scientific with negative exponent without DP' );
approx( $parser->from_string( "60.0E-1" ), 6, 'Scientific with DP with negative exponent' );
approx( $parser->from_string( "1e0" ), 1, 'Scientific with lowercase e' );
done_testing;
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