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| author | Damien George <damien@micropython.org> | 2023-11-29 11:43:43 +1100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2023-11-30 12:13:29 +1100 |
| commit | c554df57f618fb8c42fcd120ce227a425e44c4bc (patch) | |
| tree | 1cebf965c1d2a291c11419a8faf9ee5b17e78b81 | |
| parent | 6ba57f760cfcfed64157ef7dd030d76738cb0e24 (diff) | |
tests/extmod/deflate_compress.py: Add a test for optimal compression.
Signed-off-by: Damien George <damien@micropython.org>
| -rw-r--r-- | tests/extmod/deflate_compress.py | 6 | ||||
| -rw-r--r-- | tests/extmod/deflate_compress.py.exp | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/tests/extmod/deflate_compress.py b/tests/extmod/deflate_compress.py index 612af663e..981a986cb 100644 --- a/tests/extmod/deflate_compress.py +++ b/tests/extmod/deflate_compress.py @@ -146,3 +146,9 @@ for wbits in range(5, 10): next_len = len(result) print(next_len < prev_len and decompress(result, deflate.RAW, wbits) == buf) prev_len = next_len + +# Verify that compression is optimal: in the bytes below, the final "123" should be +# compressed by referencing the "123" just before it, and not the one all the way back +# at the start of the bytes. +compressed = compress(b"1234567890abcdefghijklmnopqrstuvwxyz123123", deflate.RAW) +print(len(compressed), compressed) diff --git a/tests/extmod/deflate_compress.py.exp b/tests/extmod/deflate_compress.py.exp index 5da70f491..7b00fa3cb 100644 --- a/tests/extmod/deflate_compress.py.exp +++ b/tests/extmod/deflate_compress.py.exp @@ -39,3 +39,4 @@ True True True True +41 b'3426153\xb7\xb04HLJNIMK\xcf\xc8\xcc\xca\xce\xc9\xcd\xcb/(,*.)-+\xaf\xa8\xac\x02\xaa\x01"\x00' |