--- /dev/null
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More;
+BEGIN {
+ eval "use Test::Output;";
+ plan skip_all => "Test::Output is required for this test" if $@;
+ plan tests => 2;
+}
+
+stderr_like( sub { package main; eval 'use Mouse' },
+ qr/\QMouse does not export its sugar to the 'main' package/,
+ 'Mouse warns when loaded from the main package' );
+
+stderr_like( sub { package main; eval 'use Mouse::Role' },
+ qr/\QMouse::Role does not export its sugar to the 'main' package/,
+ 'Mouse::Role warns when loaded from the main package' );