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test-compress: add test for short decompress_startswith calls

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I thought this might fail with lz4 < 1.8.3, but it seems that because of
greedy_realloc, we always use a buffer that is large enough, and it always
passes.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-10-29 22:21:28 +01:00
parent e0a1d4b049
commit ba17efce44
1 changed files with 32 additions and 0 deletions
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32
src/journal/test-compress.c
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@ -132,6 +132,32 @@ static void test_decompress_startswith(int compression,
assert_se(r > 0);
}
static void test_decompress_startswith_short(int compression,
compress_blob_t compress,
decompress_sw_t decompress_sw) {
#define TEXT "HUGE=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
char buf[1024];
size_t i, csize;
int r;
log_info("/* %s with %s */", __func__, object_compressed_to_string(compression));
r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
assert_se(r == 0);
for (i = 1; i < strlen(TEXT); i++) {
size_t alloc_size = i;
_cleanup_free_ void *buf2 = NULL;
assert_se(buf2 = malloc(i));
assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, TEXT[i]) == 1);
assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, 'y') == 0);
}
}
static void test_compress_stream(int compression,
const char* cat,
compress_stream_t compress,
@ -272,6 +298,9 @@ int main(int argc, char *argv[]) {
test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
compress_stream_xz, decompress_stream_xz, srcfile);
test_decompress_startswith_short(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_startswith_xz);
#else
log_info("/* XZ test skipped */");
#endif
@ -296,6 +325,9 @@ int main(int argc, char *argv[]) {
compress_stream_lz4, decompress_stream_lz4, srcfile);
test_lz4_decompress_partial();
test_decompress_startswith_short(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_startswith_lz4);
#else
log_info("/* LZ4 test skipped */");
#endif