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|
#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
use String::Tagged;
my $str = String::Tagged->new( "Tag [] here" );
$str->apply_tag( 5, 0, zero => "length" );
is( [ $str->tagnames ], [qw( zero )], '->tagnames sees zero-length tag' );
# ->iter_tags sees the zero-width tag
{
my $found;
$str->iter_tags( sub {
my ( $s, $l, $n, $v ) = @_;
is( $s, 5, 'tag begins at 5' );
is( $l, 0, 'tag length is 0' );
is( $n, "zero", 'tag name is zero' );
is( $v, "length", 'tag value is length' );
$found++;
} );
ok( $found, '->iter_tags sees zero-length tag' );
}
# ->iter_substr_nooverlap sees the zero-width tag
{
my $found;
$str->iter_substr_nooverlap( sub {
my ( $sub, %tags ) = @_;
return unless $tags{zero};
is( $sub, "", 'substr for zerolength tag is empty' );
is( $tags{zero}, "length", 'tag name/value' );
$found++;
} );
ok( $found, '->iter_substr_nooverlap sees zero-length tag' );
}
# zero-length tags copied by append
{
my $new = String::Tagged->new( "" );
$new .= $str;
is( [ $str->tagnames ], [qw( zero )], '->tagnames of copy contains zero-length tag' );
}
# ->debug_sprintf
{
my $out = $str->debug_sprintf;
is( $out, <<'EOF', '->debug_sprintf sees zero-length tag' );
Tag [] here
>< zero => length
EOF
}
# zero-length string can have tags
{
my $zero = String::Tagged->new_tagged(
"", zero => "here"
);
is( [ $zero->tagnames ], [qw( zero )], '->tagnames on zerolength' );
{
my $found;
$zero->iter_tags( sub {
my ( $s, $l, $n, $v ) = @_;
is( $s, 0, 'tag begins at 0' );
is( $l, 0, 'tag length is 0' );
is( $n, "zero", 'tag name is zero' );
is( $v, "here", 'tag value is here' );
$found++;
} );
ok( $found, '->iter_tags on zerolength' );
}
{
my $found;
$zero->iter_substr_nooverlap( sub {
my ( $sub, %tags ) = @_;
return unless $tags{zero};
is( $sub, "", 'substr for zerolength tag is empty' );
is( $tags{zero}, "here", 'tag name/value' );
$found++;
} );
ok( $found, '->iter_substr_nooverlap on zerolength' );
}
{
my $str = String::Tagged->new( "more" );
$str .= $zero;
is( [ $str->tagnames ], [qw( zero )], '->tagnames string appended with zerolength' );
}
}
done_testing;
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