#NEWLINE# def test_zeros( self ) : #NEWLINE# #INDENT# a = np . array ( [ [ 0 , 3 ] , [ 0 , ( - 1 ) ] ] ) #NEWLINE# b = np . array ( [ [ 0 , ( - 3 ) ] , [ 0 , 1 ] ] ) #NEWLINE# npt . assert_equal ( * _normalize_signs ( a , self ) )