my $foo = Foo->new( { spiro => 'Agnew', london => 'England' } );
isa_ok( $foo, 'Foo' );
is( $foo->spiro,  'Agnew',   "spiro" );
is( $foo->london, 'England', "london" );
ok( $foo->spiro('Not really Agnew'), "set spiro" );
ok( $foo->london('Ontario'),         "set london" );
is( $foo->spiro,  'Not really Agnew', "spiro" );
is( $foo->london, 'Ontario',          "london" );