[Plugin: wp-unit] Suggestion to remove some warning under WP_debug mode

I am trying wp-unit and noticed that when you turn on WP_DEBUG, which might be useful when you debug your testing plugin, you see few warning messages on wp-unit itself.

arrange_results($failuresKeys,'failed');

caused undefined variable warning so initialize it like,

$faulresKeys = array()
arrange_results($failuresKeys,'failed');

if($_POST['Submit'] =='Run')

caused another warning when method is get so how about this?

if(array_key_exists('Submit', $_POST) &&
			$_POST['Submit'] =='Run')

Thanks

http://wordpress.org/extend/plugins/wp-unit/