def test_pad(self):
strings = [
'1', '12', '123', '1234', '12345', '123456', '1234567', '12345678',
'123456789', '1234567890', '12345678901', '123456789012'
]
desired_lengths = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
results = [
['1'],
['01', '12'],
['001', '012', '123'],
['0001', '0012', '0123', '1234'],
[ # 5
'00001', '00012', '00123', '01234', '12345'
],
[ # 6
'000001', '000012', '000123', '001234', '012345', '123456'
],
[ # 7
'0000001', '0000012', '0000123', '0001234', '0012345',
'0123456', '1234567'
],
[ # 8
'00000001', '00000012', '00000123', '00001234', '00012345',
'00123456', '01234567', '12345678'
],
[ # 9
'000000001', '000000012', '000000123', '000001234',
'000012345', '000123456', '001234567', '012345678', '123456789'
],
[ # 10
'0000000001', '0000000012', '0000000123', '0000001234',
'0000012345', '0000123456', '0001234567', '0012345678',
'0123456789', '1234567890'
],
[ # 11
'00000000001', '00000000012', '00000000123', '00000001234',
'00000012345', '00000123456', '00001234567', '00012345678',
'00123456789', '01234567890', '12345678901'
],
[ # 12
'000000000001', '000000000012', '000000000123', '000000001234',
'000000012345', '000000123456', '000001234567', '000012345678',
'000123456789', '001234567890', '012345678901', '123456789012'
],
]
for i, length in enumerate(desired_lengths):
for j in range(length):
string = strings[j]
result = Transaction.pad(string, length)
self.assertEqual(result, results[i][j])
