public function testDefaultAutoloadingActsAsExpected()
 {
     $extension = new Extension($bag = m::mock('Cartalyst\\Extensions\\ExtensionBag'), 'foo/bar', 'path/to/extension');
     $extension->ensureNamespace();
     $loader = $extension->registerDefaultAutoloading();
     $expected = array('Foo\\Bar' => array('path/to/extension/src'));
     $this->assertEquals($expected, $loader->getPrefixes());
 }