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#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
use strict;
use warnings;
plan tests => 14;
{
package J;
my $c = 0;
sub reset { $c = 0 }
sub TIESCALAR { bless [] }
sub FETCH { $c++ ? "next" : "first" }
}
# This test makes sure that we can't pull a fast one on study(). If we
# study() a tied variable, perl should know that the studying isn't
# valid on subsequent references, and should account for it.
for my $do_study qw( 0 1 ) {
J::reset();
my $x;
tie $x, "J";
if ($do_study) {
study $x;
pass( "Studying..." );
} else {
my $first_fetch = $x;
pass( "Not studying..." );
}
# When it was studied (or first_fetched), $x was "first", but is now "next", so
# should not match /f/.
ok( $x !~ /f/, qq{"next" doesn't match /f/} );
is( index( $x, 'f' ), -1, qq{"next" doesn't contain "f"} );
# Subsequent references to $x are "next", so should match /n/
ok( $x =~ /n/, qq{"next" matches /n/} );
is( index( $x, 'n' ), 0, qq{"next" contains "n" at pos 0} );
# The letter "t" is in both, but in different positions
ok( $x =~ /t/, qq{"next" matches /t/} );
is( index( $x, 't' ), 3, qq{"next" contains "t" at pos 3} );
}
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