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use 5.010;
use strict;
use warnings;
use Regexp::Grammars;
use Test::More tests => 4;
# The text to match against
my $text = 'a' . (' ' x 5) . 'z';
# This should match without backtracking
my $repop_match = qr/
\A<TOP>\Z
<token: TOP> <[val]> ** <sep>
<token: sep> \s{5}
<token: val> \w+
/x;
# This should NOT match
my $repop_nomatch = qr/
\A<TOP>\Z
<token: TOP> <[val]> ** <sep>
<token: sep> \s{3}
<token: val> \w+
/x;
# This demonstrates the expected behaviour of $repop_match
my $standard_match = qr/
\A<TOP>\Z
<token: TOP> <[val]> (?: <sep> <[val]> )*
<token: sep> \s{5}
<token: val> \w+
/x;
# This demonstrates the expected behaviour of $repop_nomatch
my $standard_nomatch = qr/
\A<TOP>\Z
<token: TOP> <[val]> (?: <sep> <[val]> )*
<token: sep> \s{3}
<token: val> \w+
/x;
ok $text =~ $repop_match => "Repetition operator correctly matches";
ok $text !~ $repop_nomatch => "Repetition operator correctly doesn't match";
ok $text =~ $standard_match => "Simulation correctly matches";
ok $text !~ $standard_nomatch => "Simulation correctly doesn't match";
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