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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
package STSubclass;
use base qw( String::Tagged );
package main;
my $foo = STSubclass->new( "foo" );
isa_ok( $foo, [ "STSubclass" ], '$foo' );
isa_ok( $foo, [ "String::Tagged" ], '$foo' );
isa_ok( $foo . "bar", [ "STSubclass" ], 'concat plain after' );
isa_ok( "bar" . $foo, [ "STSubclass" ], 'concat plain before' );
my $bar = String::Tagged->new( "bar" );
isa_ok( $foo . $bar, [ "STSubclass" ], 'concat plain after' );
isa_ok( $bar . $foo, [ "STSubclass" ], 'concat plain before' );
done_testing;
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