Ta-Shun Su
84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
import unittest
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from typing import List, Optional
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from random import randint
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REC_CHANNEL_COUNT = 16
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def to_channel_table(*channel: int) -> List[bool]:
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return [i in channel for i in range(REC_CHANNEL_COUNT)]
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def rearrange_channel_mux_table(channel_table: List[bool]) -> Optional[List[int]]:
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enable_channel_number = 0
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last_enable_channel = 0
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for i in range(REC_CHANNEL_COUNT):
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if channel_table[i]:
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last_enable_channel = i
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enable_channel_number += 1
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if enable_channel_number == 0:
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return None
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channel_mux = [0 for _ in range(REC_CHANNEL_COUNT)]
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if enable_channel_number == 1:
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channel_mux[0] = last_enable_channel
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return channel_mux
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next_enable_channel = last_enable_channel
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channel_mux_index = last_enable_channel
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channel_mux[channel_mux_index] = last_enable_channel
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channel_mux_index -= 1
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while channel_mux_index >= 0:
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i = next_enable_channel - 1
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while i >= 0:
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if channel_table[i]:
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next_enable_channel = i
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break
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i -= 1
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if i < 0:
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break
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else:
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channel_mux[channel_mux_index] = next_enable_channel
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channel_mux_index -= 1
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offset = last_enable_channel - channel_mux_index
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while channel_mux_index >= 0:
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channel_mux[channel_mux_index] = channel_mux[channel_mux_index + offset]
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channel_mux_index -= 1
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return channel_mux
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class UniRearrangeMuxChannelTest(unittest.TestCase):
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def test_empty_channel(self):
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self.assertIsNone(rearrange_channel_mux_table(to_channel_table()))
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def test_single_channel(self):
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for _ in range(3):
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c = randint(0, REC_CHANNEL_COUNT - 1)
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expect = [c if i == 0 else 0 for i in range(REC_CHANNEL_COUNT)]
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print(expect)
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self.assertEqual(expect, rearrange_channel_mux_table(to_channel_table(c)))
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def test_two_channel(self):
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self.assertEqual([2, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
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rearrange_channel_mux_table(to_channel_table(1, 2)))
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self.assertEqual([2, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
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rearrange_channel_mux_table(to_channel_table(2, 1)))
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if __name__ == '__main__':
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unittest.main()
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