def test_getFirstItem(self):
firstItem = self.book.objectValues()[0]
adapter = INextPreviousProvider(self.book)
self.assertEqual(
firstItem, adapter.getFirstItem(), 'Incorrect first item')
def test_isFirstItem(self):
firstItem = self.book.objectValues()[0]
adapter = INextPreviousProvider(self.book)
self.assertEqual(
firstItem, adapter.getFirstItem(), 'First item check failed.')