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test-compress: also test with incompressible inputs

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2014-08-30 14:47:36 -04:00
parent b4232628f3
commit c552d602ae
1 changed files with 64 additions and 25 deletions
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89
src/journal/test-compress.c
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@ -48,25 +48,31 @@ typedef int (decompress_stream_t)(int fdf, int fdt, off_t max_size);
static void test_compress_decompress(int compression,
compress_blob_t compress,
decompress_blob_t decompress) {
char text[] = "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
decompress_blob_t decompress,
const char *data,
size_t data_len,
bool may_fail) {
char compressed[512];
size_t csize = 512;
size_t usize = 0;
_cleanup_free_ char *decompressed = NULL;
int r;
log_info("/* testing %s blob compression/decompression */",
object_compressed_to_string(compression));
log_info("/* testing %s %s blob compression/decompression */",
object_compressed_to_string(compression), data);
r = compress(text, sizeof(text), compressed, &csize);
assert(r == 0);
r = decompress(compressed, csize,
(void **) &decompressed, &usize, &csize, 0);
assert(r == 0);
assert_se(decompressed);
assert_se(streq(decompressed, text));
r = compress(data, data_len, compressed, &csize);
if (r == -ENOBUFS) {
log_info("compression failed: %s", strerror(-r));
assert(may_fail);
} else {
assert(r == 0);
r = decompress(compressed, csize,
(void **) &decompressed, &usize, &csize, 0);
assert(r == 0);
assert_se(decompressed);
assert_se(memcmp(decompressed, data, data_len) == 0);
}
r = decompress("garbage", 7,
(void **) &decompressed, &usize, &csize, 0);
@ -86,29 +92,38 @@ static void test_compress_decompress(int compression,
static void test_decompress_startswith(int compression,
compress_blob_t compress,
decompress_sw_t decompress_sw) {
decompress_sw_t decompress_sw,
const char *data,
size_t data_len,
bool may_fail) {
char text[] = "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
char compressed[512];
size_t csize = 512;
size_t usize = 0;
_cleanup_free_ char *decompressed = NULL;
int r;
log_info("/* testing decompress_startswith with %s */",
object_compressed_to_string(compression));
log_info("/* testing decompress_startswith with %s on %s text*/",
object_compressed_to_string(compression), data);
r = compress(data, data_len, compressed, &csize);
if (r == -ENOBUFS) {
log_info("compression failed: %s", strerror(-r));
assert(may_fail);
return;
}
assert(r == 0);
assert_se(compress(text, sizeof(text), compressed, &csize) == 0);
assert_se(decompress_sw(compressed,
csize,
(void **) &decompressed,
&usize,
"foofoofoofoo", 12, ' ') > 0);
data, strlen(data), '\0') > 0);
assert_se(decompress_sw(compressed,
csize,
(void **) &decompressed,
&usize,
"foofoofoofoo", 12, 'w') == 0);
data, strlen(data), 'w') == 0);
assert_se(decompress_sw(compressed,
csize,
(void **) &decompressed,
@ -118,7 +133,7 @@ static void test_decompress_startswith(int compression,
csize,
(void **) &decompressed,
&usize,
"foofoofoofoo", 12, ' ') > 0);
data, strlen(data), '\0') > 0);
}
static void test_compress_stream(int compression,
@ -181,20 +196,44 @@ static void test_compress_stream(int compression,
}
int main(int argc, char *argv[]) {
const char text[] =
"text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
char data[512] = "random\0";
log_set_max_level(LOG_DEBUG);
random_bytes(data + 7, sizeof(data) - 7);
#ifdef HAVE_XZ
test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz);
test_decompress_startswith(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_startswith_xz);
test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
text, sizeof(text), false);
test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
data, sizeof(data), true);
test_decompress_startswith(OBJECT_COMPRESSED_XZ,
compress_blob_xz, decompress_startswith_xz,
text, sizeof(text), false);
test_decompress_startswith(OBJECT_COMPRESSED_XZ,
compress_blob_xz, decompress_startswith_xz,
data, sizeof(data), true);
test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
compress_stream_xz, decompress_stream_xz, argv[0]);
#else
log_info("/* XZ test skipped */");
#endif
#ifdef HAVE_LZ4
test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4);
test_decompress_startswith(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_startswith_lz4);
test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
text, sizeof(text), false);
test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
data, sizeof(data), true);
test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
compress_blob_lz4, decompress_startswith_lz4,
text, sizeof(text), false);
test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
compress_blob_lz4, decompress_startswith_lz4,
data, sizeof(data), true);
/* Produced stream is not compatible with lz4 binary, skip lz4cat check. */
test_compress_stream(OBJECT_COMPRESSED_LZ4, NULL,