#NEWLINE# def test_multi_union( self ) : #NEWLINE# #INDENT# s = sets . OrderedSet ( [ 1 , 2 , 3 ] ) #NEWLINE# s2 = sets . OrderedSet ( [ 2 , 3 , 4 ] ) #NEWLINE# s3 = sets . OrderedSet ( [ 4 , 5 , 6 ] ) #NEWLINE# es = set ( s ) #NEWLINE# es2 = set ( s2 ) #NEWLINE# es3 = set ( s3 ) #NEWLINE# self . assertEqual ( es . union ( es2 , es ) , s . union ( s2 , s3 ) )