def test_avg_time_between_bills(self):
bills = read_bills()
self.assertEqual(439.0, avg_time_between_bills(bills))
def test_display_bill_count(self):
bills = read_bills()
self.assertEqual(43, display_bill_count(bills))
def test_display_sortedbydate(self):
bills = read_bills()
bills1 = display_sortedbydate(bills)
self.assertEqual('Tesco Mobile', bills1['Company'].values[0])
self.assertEqual('Karen Byrne', bills1['Account Name'].values[10])
def test_display_unique_companies(self):
bills = read_bills()
self.assertEqual(10, display_unique_companies(bills))
def test_read_bills(self):
bills = read_bills()
self.assertEqual(43, len(bills))