Add tests for _diff_weights

This commit is contained in:
kris 2019-06-14 00:13:28 +01:00
parent b781bf3a10
commit d5f2482a0a

72
transcoder/video_test.py Normal file
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"""Tests for the video module."""
import unittest
import screen
import video
class TestVideo(unittest.TestCase):
def test_diff_weights(self):
fs = video.FrameSequencer(mode=video.Mode.DHGR)
v = video.Video(fs, mode=video.Mode.DHGR)
frame = screen.MemoryMap(screen_page=1)
frame.page_offset[0, 0] = 0b1111111
frame.page_offset[0, 1] = 0b1010101
target_pixelmap = screen.DHGRBitmap(
main_memory=v.memory_map,
aux_memory=frame
)
self.assertEqual(
0b0000000101010100000001111111,
target_pixelmap.packed[0, 0])
diff = v._diff_weights(v.pixelmap, target_pixelmap, is_aux=True)
# Expect byte 0 to map to 0b00000000 01111111
expect0 = target_pixelmap.edit_distances[0][0b0000000001111111]
# Expect byte 2 to map to 0b000000000000 000101010100
expect2 = target_pixelmap.edit_distances[2][0b000101010100]
self.assertEqual(expect0, diff[0, 0])
self.assertEqual(expect2, diff[0, 1])
# Update aux frame
v.aux_memory_map.page_offset = frame.page_offset
v.pixelmap._pack()
self.assertEqual(
0b0000000101010100000001111111,
v.pixelmap.packed[0, 0]
)
# Encode new aux frame
frame = screen.MemoryMap(screen_page=1)
frame.page_offset[0, 0] = 0b1101101
frame.page_offset[0, 1] = 0b0110110
target_pixelmap = screen.DHGRBitmap(
main_memory=v.memory_map,
aux_memory=frame
)
self.assertEqual(
0b0000000011011000000001101101,
target_pixelmap.packed[0, 0]
)
diff = v._diff_weights(v.pixelmap, target_pixelmap, is_aux=True)
# Expect byte 0 to map to 0b01111111 01101101
expect0 = target_pixelmap.edit_distances[0][0b0111111101101101]
# Expect byte 2 to map to 0b000101010100 000011011000
expect2 = target_pixelmap.edit_distances[2][0b0000101010100000011011000]
self.assertEqual(expect0, diff[0, 0])
self.assertEqual(expect2, diff[0, 1])
if __name__ == '__main__':
unittest.main()