#NEWLINE# def test_empty_sequence_merge( self ) : #NEWLINE# #INDENT# '\n        Ensure that an empty sequence merge is an identity operation\n        ' #NEWLINE# s1 = self . make_sequence ( ) #NEWLINE# from sebastian.core import OSequence #NEWLINE# s2 = OSequence ( [ ] ) #NEWLINE# merged = ( s1 // s1 ) #NEWLINE# from sebastian.core import OFFSET_64 , DURATION_64 , MIDI_PITCH #NEWLINE# self . assertEqual ( merged . _elements , [ { #NEWLINE# #INDENT# MIDI_PITCH : 50 , #NEWLINE# OFFSET_64 : 16 , #NEWLINE# DURATION_64 : 17 , #NEWLINE# #UNINDENT# } , { #NEWLINE# #INDENT# MIDI_PITCH : 53 , #NEWLINE# OFFSET_64 : 19 , #NEWLINE# DURATION_64 : 20 , #NEWLINE# #UNINDENT# } ] )