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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
package TestParser {
use base qw( Parser::MGC );
our $Nonempty;
sub parse
{
my $self = shift;
[ ( $Nonempty ? $self->nonempty_substring_before( "!" ) : $self->substring_before( "!" ) ),
$self->expect( "!" ) ];
}
}
my $parser = TestParser->new;
{
is( $parser->from_string( "Hello, world!" ),
[ "Hello, world", "!" ],
'"Hello, world!"' );
is( $parser->from_string( "!" ),
[ "", "!" ],
'"!"' );
}
{
local $TestParser::Nonempty = 1;
is( dies { $parser->from_string( "!" ) },
qq[Expected to find a non-empty substring before \(\?^u:\\!\) on line 1 at:\n] .
qq[!\n] .
qq[^\n],
'Exception from ->nonempty_substring_before failure' );
}
done_testing;
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