def test_get_tree_info(self):
    'get_tree_info returns the Nexus file section that describes the tree'
    result = get_tree_info(Nexus_tree)
    self.assertEqual(len(result), 33)
    self.assertEqual(result[0], 'Begin trees;  [Treefile saved Wednesday, May 5, 2004  5:02 PM]')
    self.assertEqual(result[31], 'tree PAUP_1 = [&R] (1,(2,(((3,4),(5,(((((6,10),9),(11,18)),((((7,15),19),17),(8,(12,(14,16))))),13))),20)),21);')
get_tree_info returns the Nexus file section that describes the tree
def test_get_tree_info(self):
    
    result = get_tree_info(Nexus_tree)
    self.assertEqual(len(result), 33)
    self.assertEqual(result[0], 'Begin trees;  [Treefile saved Wednesday, May 5, 2004  5:02 PM]')
    self.assertEqual(result[31], 'tree PAUP_1 = [&R] (1,(2,(((3,4),(5,(((((6,10),9),(11,18)),((((7,15),19),17),(8,(12,(14,16))))),13))),20)),21);')