--- /dev/null
+#!/usr/bin/perl -w
+
+#!perl -w
+
+BEGIN {
+ if( $ENV{PERL_CORE} ) {
+ chdir 't';
+ @INC = ('../lib', 'lib');
+ }
+ else {
+ unshift @INC, 't/lib';
+ }
+}
+
+use Test::More tests => 8;
+use Test::Builder;
+
+my $more_tb = Test::More->builder;
+isa_ok $more_tb, 'Test::Builder';
+
+is $more_tb, Test::More->builder, 'create does not interfere with ->builder';
+is $more_tb, Test::Builder->new, ' does not interfere with ->new';
+
+{
+ my $new_tb = Test::Builder->create;
+
+ isa_ok $new_tb, 'Test::Builder';
+ isnt $more_tb, $new_tb, 'Test::Builder->create makes a new object';
+
+ $new_tb->output("some_file");
+ END { 1 while unlink "some_file" }
+
+ $new_tb->plan(tests => 1);
+ $new_tb->ok(1);
+}
+
+pass("Changing output() of new TB doesn't interfere with singleton");
+
+ok open FILE, "some_file";
+is join("", <FILE>), <<OUT;
+1..1
+ok 1
+OUT
+
+close FILE;