Adding failing test for the asymmetric unicode bug

t/rt_25371_asymmetric_unicode.t

@@ -0,0 +1,27 @@
+#!/usr/bin/perl
+
+use strict;
+BEGIN {
+	$|  = 1;
+	$^W = 1;
+}
+
+use t::lib::Test;
+use Test::More tests => 15;
+use Test::NoWarnings;
+
+my $dbh = connect_ok();
+$dbh->{unicode} = 1;
+
+ok( $dbh->do(<<'END_SQL'), 'CREATE TABLE' );
+CREATE TABLE foo (
+    bar varchar(255)
+)
+END_SQL
+
+foreach ( "\0", "A", "\xe9", "\x{20ac}" ) {
+    ok( $dbh->do("INSERT INTO foo VALUES ( ? )", {}, $_), 'INSERT' );
+    my $foo = $dbh->selectall_arrayref("SELECT bar FROM foo");
+    is_deeply( $foo, [ [ $_ ] ], 'Value round-tripped ok' );
+    ok( $dbh->do("DELETE FROM foo"), 'DELETE ok' );
+}