from abjad import *


def test_glissando_spanner_01( ):
   t = Staff([Note(n, (1, 8)) for n in range(8)])
   gliss = Glissando(t.leaves[ : 4])
   assert isinstance(gliss, Glissando)
   assert t.format =="\\new Staff {\n\tc'8 \\glissando\n\tcs'8 \\glissando\n\td'8 \\glissando\n\tef'8\n\te'8\n\tf'8\n\tfs'8\n\tg'8\n}"
   '''
   \new Staff {
           c'8 \glissando
           cs'8 \glissando
           d'8 \glissando
           ef'8
           e'8
           f'8
           fs'8
           g'8
   }
   '''

