#NEWLINE# def testDarkenedRoom( self ) : #NEWLINE# #INDENT# "\n        Test that when a 'dark' LocationLighting proxy is on a location,\n        only darkness can be seen.\n        " #NEWLINE# darkThings = list ( self . observer . findProviders ( iimaginary . IVisible , 1 ) ) #NEWLINE# self . assertDarkRoom ( darkThings [ 0 ] ) #NEWLINE# self . assertEquals ( len ( darkThings ) , 1 )