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Tests: Improve invalid unpadded size check in test_lzma_index_append(). 

This check was extended to test the code added to fix a failing assert
in 68bda971bb.
This commit is contained in:
Jia Tan 2023-08-28 23:14:45 +08:00
parent 4a4180ce74
commit cf8ba7c3a8
1 changed files with 23 additions and 3 deletions
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26
tests/test_index.c
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@ -134,15 +134,35 @@ test_lzma_index_append(void)
lzma_index_end(idx, NULL);
// Test uncompressed .xz file size growing too large.
// Test compressed .xz file size growing too large. This also tests
// a failing assert fixed in 68bda971bb8b666a009331455fcedb4e18d837a4.
// Should result in LZMA_DATA_ERROR.
idx = lzma_index_init(NULL);
assert_lzma_ret(lzma_index_append(idx, NULL, UNPADDED_SIZE_MAX,
1), LZMA_DATA_ERROR);
// The calculation for maximum unpadded size is to make room for the
// second stream when lzma_index_cat() is called. The
// 4 * LZMA_STREAM_HEADER_SIZE is for the header and footer of
// both streams. The extra 24 bytes are for the size of the indexes
// for both streams. This allows us to maximize the unpadded sum
// during the lzma_index_append() call after the indexes have been
// concatenated.
assert_lzma_ret(lzma_index_append(idx, NULL, UNPADDED_SIZE_MAX
- ((4 * LZMA_STREAM_HEADER_SIZE) + 24), 1), LZMA_OK);
lzma_index *second = lzma_index_init(NULL);
assert_true(second != NULL);
assert_lzma_ret(lzma_index_cat(second, idx, NULL), LZMA_OK);
assert_lzma_ret(lzma_index_append(second, NULL, UNPADDED_SIZE_MAX, 1),
LZMA_DATA_ERROR);
lzma_index_end(second, NULL);
// Test uncompressed size growing too large.
// Should result in LZMA_DATA_ERROR.
idx = lzma_index_init(NULL);
assert_lzma_ret(lzma_index_append(idx, NULL,
UNPADDED_SIZE_MIN, LZMA_VLI_MAX), LZMA_OK);
assert_lzma_ret(lzma_index_append(idx, NULL,