def test_list_extender(self):
"""list_adder should add items to list, creating if necessary"""
d = dummy()
list_extender(d, 'x', '345')
self.assertEqual(d.x, ['3','4','5'])
list_extender(d, 'x', 'abc')
self.assertEqual(d.x, ['3','4','5','a','b','c'])
list_extender(d, 'y', [2,3])
self.assertEqual(d.x, ['3','4','5','a','b','c'])
self.assertEqual(d.y, [2,3])
list_extender(d, 'y', None)
self.assertEqual(d.y, [2,3,None])
def _pmid_adder(obj, field, line):
"""Adds pmid to relevant field"""
list_extender(obj, field, _read_pmid(line))
