def test_encode(self):
test_value = "ttttttessst1"
run_length_encoder = RunLengthEncoder()
self.assertRaises(ValueError,
lambda: run_length_encoder.encode()) # assert if method raises error when there is no input
self.assertTrue(run_length_encoder.input is None) # assert if input is none when it's not set
self.assertEqual(0, len(run_length_encoder.memory)) # assert that memory is empty and initialized at start
run_length_encoder.input = test_value
self.assertEqual(run_length_encoder.input, test_value) # assert that input is initialized with proper value
self.assertEqual(run_length_encoder.encode(),
[('t', 6), ('e', 1), ('s', 3), ('t', 1), ('1', 1)]) # assert that result is correct
self.assertEqual(1, len(run_length_encoder.memory)) # assert that result is saved in memory
run_length_encoder.encode()
self.assertEqual(1, len(run_length_encoder.memory)) # assert that result is taken from memory
import sys
from LempelZivWelchEncoder import LempelZivWelchEncoder
from RunLengthEncoder import RunLengthEncoder
lvwExecutor = LempelZivWelchEncoder()
rleExecutor = RunLengthEncoder()
if len(sys.argv) != 3:
raise ValueError("There should be arguments!")
if sys.argv[1] != 'lvw' and sys.argv[1] != 'rle':
raise ValueError("First argument is lvw (Lempel Ziv Welch Algorithm) or rle (Run Length Algorithm)!")
if sys.argv[1] == 'lvw':
lvwExecutor.input = str(sys.argv[2])
print(lvwExecutor.encode())
else:
rleExecutor.input = str(sys.argv[2])
print(rleExecutor.encode())