src/libsystemd/sd-journal/test-compress.c - systemd - Git at Google

 /* SPDX-License-Identifier: LGPL-2.1-or-later */

 #include <sys/stat.h>

 #if HAVE_LZ4
 #include <lz4.h>
 #endif

 #include "alloc-util.h"
 #include "compress.h"
 #include "fd-util.h"
 #include "fs-util.h"
 #include "macro.h"
 #include "memory-util.h"
 #include "path-util.h"
 #include "random-util.h"
 #include "tests.h"
 #include "tmpfile-util.h"

 #if HAVE_XZ
 # define XZ_OK 0
 #else
 # define XZ_OK -EPROTONOSUPPORT
 #endif

 #if HAVE_LZ4
 # define LZ4_OK 0
 #else
 # define LZ4_OK -EPROTONOSUPPORT
 #endif

 #define HUGE_SIZE (4096*1024)

 typedef int (compress_blob_t)(const void *src, uint64_t src_size,
                               void *dst, size_t dst_alloc_size, size_t *dst_size);
 typedef int (decompress_blob_t)(const void *src, uint64_t src_size,
                                 void **dst,
                                 size_t* dst_size, size_t dst_max);
 typedef int (decompress_sw_t)(const void *src, uint64_t src_size,
                               void **buffer,
                               const void *prefix, size_t prefix_len,
                               uint8_t extra);

 typedef int (compress_stream_t)(int fdf, int fdt, uint64_t max_bytes, uint64_t *uncompressed_size);
 typedef int (decompress_stream_t)(int fdf, int fdt, uint64_t max_size);

 #if HAVE_COMPRESSION
 _unused_ static void test_compress_decompress(
                 const char *compression,
                 compress_blob_t compress,
                 decompress_blob_t decompress,
                 const char *data,
                 size_t data_len,
                 bool may_fail) {

         char compressed[512];
         size_t csize;
         _cleanup_free_ char *decompressed = NULL;
         int r;

         log_info("/* testing %s %s blob compression/decompression */",
                  compression, data);

         r = compress(data, data_len, compressed, sizeof(compressed), &csize);
         if (r == -ENOBUFS) {
                 log_info_errno(r, "compression failed: %m");
                 assert_se(may_fail);
         } else {
                 assert_se(r == 0);
                 r = decompress(compressed, csize,
                                (void **) &decompressed, &csize, 0);
                 assert_se(r == 0);
                 assert_se(decompressed);
                 assert_se(memcmp(decompressed, data, data_len) == 0);
         }

         r = decompress("garbage", 7,
                        (void **) &decompressed, &csize, 0);
         assert_se(r < 0);

         /* make sure to have the minimal lz4 compressed size */
         r = decompress("00000000\1g", 9,
                        (void **) &decompressed, &csize, 0);
         assert_se(r < 0);

         r = decompress("\100000000g", 9,
                        (void **) &decompressed, &csize, 0);
         assert_se(r < 0);

         explicit_bzero_safe(decompressed, MALLOC_SIZEOF_SAFE(decompressed));
 }

 _unused_ static void test_decompress_startswith(const char *compression,
                                                 compress_blob_t compress,
                                                 decompress_sw_t decompress_sw,
                                                 const char *data,
                                                 size_t data_len,
                                                 bool may_fail) {

         char *compressed;
         _cleanup_free_ char *compressed1 = NULL, *compressed2 = NULL, *decompressed = NULL;
         size_t csize, len;
         int r;

         log_info("/* testing decompress_startswith with %s on %.20s text */",
                  compression, data);

 #define BUFSIZE_1 512
 #define BUFSIZE_2 20000

         compressed = compressed1 = malloc(BUFSIZE_1);
         assert_se(compressed1);
         r = compress(data, data_len, compressed, BUFSIZE_1, &csize);
         if (r == -ENOBUFS) {
                 log_info_errno(r, "compression failed: %m");
                 assert_se(may_fail);

                 compressed = compressed2 = malloc(BUFSIZE_2);
                 assert_se(compressed2);
                 r = compress(data, data_len, compressed, BUFSIZE_2, &csize);
                 assert(r == 0);
         }
         assert_se(r == 0);

         len = strlen(data);

         r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, '\0');
         assert_se(r > 0);
         r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, 'w');
         assert_se(r == 0);
         r = decompress_sw(compressed, csize, (void **) &decompressed, "barbarbar", 9, ' ');
         assert_se(r == 0);
         r = decompress_sw(compressed, csize, (void **) &decompressed, data, len - 1, data[len-1]);
         assert_se(r > 0);
         r = decompress_sw(compressed, csize, (void **) &decompressed, data, len - 1, 'w');
         assert_se(r == 0);
         r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, '\0');
         assert_se(r > 0);
 }

 _unused_ static void test_decompress_startswith_short(const char *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__, compression);

         r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
         assert_se(r == 0);

         for (i = 1; i < strlen(TEXT); i++) {
                 _cleanup_free_ void *buf2 = NULL;

                 assert_se(buf2 = malloc(i));

                 assert_se(decompress_sw(buf, csize, &buf2, TEXT, i, TEXT[i]) == 1);
                 assert_se(decompress_sw(buf, csize, &buf2, TEXT, i, 'y') == 0);
         }
 }

 _unused_ static void test_compress_stream(const char *compression,
                                           const char *cat,
                                           compress_stream_t compress,
                                           decompress_stream_t decompress,
                                           const char *srcfile) {

         _cleanup_close_ int src = -1, dst = -1, dst2 = -1;
         _cleanup_(unlink_tempfilep) char
                 pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
                 pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
         int r;
         _cleanup_free_ char *cmd = NULL, *cmd2 = NULL;
         struct stat st = {};
         uint64_t uncompressed_size;

         r = find_executable(cat, NULL);
         if (r < 0) {
                 log_error_errno(r, "Skipping %s, could not find %s binary: %m", __func__, cat);
                 return;
         }

         log_debug("/* testing %s compression */", compression);

         log_debug("/* create source from %s */", srcfile);

         assert_se((src = open(srcfile, O_RDONLY|O_CLOEXEC)) >= 0);

         log_debug("/* test compression */");

         assert_se((dst = mkostemp_safe(pattern)) >= 0);

         assert_se(compress(src, dst, -1, &uncompressed_size) == 0);

         if (cat) {
                 assert_se(asprintf(&cmd, "%s %s | diff %s -", cat, pattern, srcfile) > 0);
                 assert_se(system(cmd) == 0);
         }

         log_debug("/* test decompression */");

         assert_se((dst2 = mkostemp_safe(pattern2)) >= 0);

         assert_se(stat(srcfile, &st) == 0);
         assert_se((uint64_t)st.st_size == uncompressed_size);

         assert_se(lseek(dst, 0, SEEK_SET) == 0);
         r = decompress(dst, dst2, st.st_size);
         assert_se(r == 0);

         assert_se(asprintf(&cmd2, "diff %s %s", srcfile, pattern2) > 0);
         assert_se(system(cmd2) == 0);

         log_debug("/* test faulty decompression */");

         assert_se(lseek(dst, 1, SEEK_SET) == 1);
         r = decompress(dst, dst2, st.st_size);
         assert_se(IN_SET(r, 0, -EBADMSG));

         assert_se(lseek(dst, 0, SEEK_SET) == 0);
         assert_se(lseek(dst2, 0, SEEK_SET) == 0);
         r = decompress(dst, dst2, st.st_size - 1);
         assert_se(r == -EFBIG);
 }
 #endif

 #if HAVE_LZ4
 static void test_lz4_decompress_partial(void) {
         char buf[20000], buf2[100];
         size_t buf_size = sizeof(buf), compressed;
         int r;
         _cleanup_free_ char *huge = NULL;

         log_debug("/* %s */", __func__);

         assert_se(huge = malloc(HUGE_SIZE));
         memcpy(huge, "HUGE=", STRLEN("HUGE="));
         memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
         huge[HUGE_SIZE - 1] = '\0';

         r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
         assert_se(r >= 0);
         compressed = r;
         log_info("Compressed %i → %zu", HUGE_SIZE, compressed);

         r = LZ4_decompress_safe(buf, huge, r, HUGE_SIZE);
         assert_se(r >= 0);
         log_info("Decompressed → %i", r);

         r = LZ4_decompress_safe_partial(buf, huge,
                                         compressed,
                                         12, HUGE_SIZE);
         assert_se(r >= 0);
         log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE, r);

         for (size_t size = 1; size < sizeof(buf2); size++) {
                 /* This failed in older lz4s but works in newer ones. */
                 r = LZ4_decompress_safe_partial(buf, buf2, compressed, size, size);
                 log_info("Decompressed partial %zu/%zu → %i (%s)", size, size, r,
                                                                    r < 0 ? "bad" : "good");
                 if (r >= 0 && LZ4_versionNumber() >= 10803)
                         /* lz4 <= 1.8.2 should fail that test, let's only check for newer ones */
                         assert_se(memcmp(buf2, huge, r) == 0);
         }
 }
 #endif

 int main(int argc, char *argv[]) {
 #if HAVE_COMPRESSION
         _unused_ const char text[] =
                 "text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
                 "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";

         /* The file to test compression on can be specified as the first argument */
         const char *srcfile = argc > 1 ? argv[1] : argv[0];

         char data[512] = "random\0";

         _cleanup_free_ char *huge = NULL;

         assert_se(huge = malloc(HUGE_SIZE));
         memcpy(huge, "HUGE=", STRLEN("HUGE="));
         memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
         huge[HUGE_SIZE - 1] = '\0';

         test_setup_logging(LOG_DEBUG);

         random_bytes(data + 7, sizeof(data) - 7);

 #if HAVE_XZ
         test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
                                  text, sizeof(text), false);
         test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
                                  data, sizeof(data), true);

         test_decompress_startswith("XZ",
                                    compress_blob_xz, decompress_startswith_xz,
                                    text, sizeof(text), false);
         test_decompress_startswith("XZ",
                                    compress_blob_xz, decompress_startswith_xz,
                                    data, sizeof(data), true);
         test_decompress_startswith("XZ",
                                    compress_blob_xz, decompress_startswith_xz,
                                    huge, HUGE_SIZE, true);

         test_compress_stream("XZ", "xzcat",
                              compress_stream_xz, decompress_stream_xz, srcfile);

         test_decompress_startswith_short("XZ", compress_blob_xz, decompress_startswith_xz);

 #else
         log_info("/* XZ test skipped */");
 #endif

 #if HAVE_LZ4
         test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
                                  text, sizeof(text), false);
         test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
                                  data, sizeof(data), true);

         test_decompress_startswith("LZ4",
                                    compress_blob_lz4, decompress_startswith_lz4,
                                    text, sizeof(text), false);
         test_decompress_startswith("LZ4",
                                    compress_blob_lz4, decompress_startswith_lz4,
                                    data, sizeof(data), true);
         test_decompress_startswith("LZ4",
                                    compress_blob_lz4, decompress_startswith_lz4,
                                    huge, HUGE_SIZE, true);

         test_compress_stream("LZ4", "lz4cat",
                              compress_stream_lz4, decompress_stream_lz4, srcfile);

         test_lz4_decompress_partial();

         test_decompress_startswith_short("LZ4", compress_blob_lz4, decompress_startswith_lz4);

 #else
         log_info("/* LZ4 test skipped */");
 #endif

 #if HAVE_ZSTD
         test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
                                  text, sizeof(text), false);
         test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
                                  data, sizeof(data), true);

         test_decompress_startswith("ZSTD",
                                    compress_blob_zstd, decompress_startswith_zstd,
                                    text, sizeof(text), false);
         test_decompress_startswith("ZSTD",
                                    compress_blob_zstd, decompress_startswith_zstd,
                                    data, sizeof(data), true);
         test_decompress_startswith("ZSTD",
                                    compress_blob_zstd, decompress_startswith_zstd,
                                    huge, HUGE_SIZE, true);

         test_compress_stream("ZSTD", "zstdcat",
                              compress_stream_zstd, decompress_stream_zstd, srcfile);

         test_decompress_startswith_short("ZSTD", compress_blob_zstd, decompress_startswith_zstd);
 #else
         log_info("/* ZSTD test skipped */");
 #endif

         return 0;
 #else
         log_info("/* XZ, LZ4 and ZSTD tests skipped */");
         return EXIT_TEST_SKIP;
 #endif
 }
	/* SPDX-License-Identifier: LGPL-2.1-or-later */

	#include <sys/stat.h>

	#if HAVE_LZ4
	#include <lz4.h>
	#endif

	#include "alloc-util.h"
	#include "compress.h"
	#include "fd-util.h"
	#include "fs-util.h"
	#include "macro.h"
	#include "memory-util.h"
	#include "path-util.h"
	#include "random-util.h"
	#include "tests.h"
	#include "tmpfile-util.h"

	#if HAVE_XZ
	# define XZ_OK 0
	#else
	# define XZ_OK -EPROTONOSUPPORT
	#endif

	#if HAVE_LZ4
	# define LZ4_OK 0
	#else
	# define LZ4_OK -EPROTONOSUPPORT
	#endif

	#define HUGE_SIZE (4096*1024)

	typedef int (compress_blob_t)(const void *src, uint64_t src_size,
	void dst, size_t dst_alloc_size, size_t dst_size);
	typedef int (decompress_blob_t)(const void *src, uint64_t src_size,
	void **dst,
	size_t* dst_size, size_t dst_max);
	typedef int (decompress_sw_t)(const void *src, uint64_t src_size,
	void **buffer,
	const void *prefix, size_t prefix_len,
	uint8_t extra);

	typedef int (compress_stream_t)(int fdf, int fdt, uint64_t max_bytes, uint64_t *uncompressed_size);
	typedef int (decompress_stream_t)(int fdf, int fdt, uint64_t max_size);

	#if HAVE_COMPRESSION
	_unused_ static void test_compress_decompress(
	const char *compression,
	compress_blob_t compress,
	decompress_blob_t decompress,
	const char *data,
	size_t data_len,
	bool may_fail) {

	char compressed[512];
	size_t csize;
	_cleanup_free_ char *decompressed = NULL;
	int r;

	log_info("/* testing %s %s blob compression/decompression */",
	compression, data);

	r = compress(data, data_len, compressed, sizeof(compressed), &csize);
	if (r == -ENOBUFS) {
	log_info_errno(r, "compression failed: %m");
	assert_se(may_fail);
	} else {
	assert_se(r == 0);
	r = decompress(compressed, csize,
	(void **) &decompressed, &csize, 0);
	assert_se(r == 0);
	assert_se(decompressed);
	assert_se(memcmp(decompressed, data, data_len) == 0);
	}

	r = decompress("garbage", 7,
	(void **) &decompressed, &csize, 0);
	assert_se(r < 0);

	/* make sure to have the minimal lz4 compressed size */
	r = decompress("00000000\1g", 9,
	(void **) &decompressed, &csize, 0);
	assert_se(r < 0);

	r = decompress("\100000000g", 9,
	(void **) &decompressed, &csize, 0);
	assert_se(r < 0);

	explicit_bzero_safe(decompressed, MALLOC_SIZEOF_SAFE(decompressed));
	}

	_unused_ static void test_decompress_startswith(const char *compression,
	compress_blob_t compress,
	decompress_sw_t decompress_sw,
	const char *data,
	size_t data_len,
	bool may_fail) {

	char *compressed;
	_cleanup_free_ char compressed1 = NULL, compressed2 = NULL, *decompressed = NULL;
	size_t csize, len;
	int r;

	log_info("/* testing decompress_startswith with %s on %.20s text */",
	compression, data);

	#define BUFSIZE_1 512
	#define BUFSIZE_2 20000

	compressed = compressed1 = malloc(BUFSIZE_1);
	assert_se(compressed1);
	r = compress(data, data_len, compressed, BUFSIZE_1, &csize);
	if (r == -ENOBUFS) {
	log_info_errno(r, "compression failed: %m");
	assert_se(may_fail);

	compressed = compressed2 = malloc(BUFSIZE_2);
	assert_se(compressed2);
	r = compress(data, data_len, compressed, BUFSIZE_2, &csize);
	assert(r == 0);
	}
	assert_se(r == 0);

	len = strlen(data);

	r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, '\0');
	assert_se(r > 0);
	r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, 'w');
	assert_se(r == 0);
	r = decompress_sw(compressed, csize, (void **) &decompressed, "barbarbar", 9, ' ');
	assert_se(r == 0);
	r = decompress_sw(compressed, csize, (void **) &decompressed, data, len - 1, data[len-1]);
	assert_se(r > 0);
	r = decompress_sw(compressed, csize, (void **) &decompressed, data, len - 1, 'w');
	assert_se(r == 0);
	r = decompress_sw(compressed, csize, (void **) &decompressed, data, len, '\0');
	assert_se(r > 0);
	}

	_unused_ static void test_decompress_startswith_short(const char *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__, compression);

	r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
	assert_se(r == 0);

	for (i = 1; i < strlen(TEXT); i++) {
	_cleanup_free_ void *buf2 = NULL;

	assert_se(buf2 = malloc(i));

	assert_se(decompress_sw(buf, csize, &buf2, TEXT, i, TEXT[i]) == 1);
	assert_se(decompress_sw(buf, csize, &buf2, TEXT, i, 'y') == 0);
	}
	}

	_unused_ static void test_compress_stream(const char *compression,
	const char *cat,
	compress_stream_t compress,
	decompress_stream_t decompress,
	const char *srcfile) {

	_cleanup_close_ int src = -1, dst = -1, dst2 = -1;
	_cleanup_(unlink_tempfilep) char
	pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
	pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
	int r;
	_cleanup_free_ char cmd = NULL, cmd2 = NULL;
	struct stat st = {};
	uint64_t uncompressed_size;

	r = find_executable(cat, NULL);
	if (r < 0) {
	log_error_errno(r, "Skipping %s, could not find %s binary: %m", __func__, cat);
	return;
	}

	log_debug("/* testing %s compression */", compression);

	log_debug("/* create source from %s */", srcfile);

	assert_se((src = open(srcfile, O_RDONLY\|O_CLOEXEC)) >= 0);

	log_debug("/* test compression */");

	assert_se((dst = mkostemp_safe(pattern)) >= 0);

	assert_se(compress(src, dst, -1, &uncompressed_size) == 0);

	if (cat) {
	assert_se(asprintf(&cmd, "%s %s \| diff %s -", cat, pattern, srcfile) > 0);
	assert_se(system(cmd) == 0);
	}

	log_debug("/* test decompression */");

	assert_se((dst2 = mkostemp_safe(pattern2)) >= 0);

	assert_se(stat(srcfile, &st) == 0);
	assert_se((uint64_t)st.st_size == uncompressed_size);

	assert_se(lseek(dst, 0, SEEK_SET) == 0);
	r = decompress(dst, dst2, st.st_size);
	assert_se(r == 0);

	assert_se(asprintf(&cmd2, "diff %s %s", srcfile, pattern2) > 0);
	assert_se(system(cmd2) == 0);

	log_debug("/* test faulty decompression */");

	assert_se(lseek(dst, 1, SEEK_SET) == 1);
	r = decompress(dst, dst2, st.st_size);
	assert_se(IN_SET(r, 0, -EBADMSG));

	assert_se(lseek(dst, 0, SEEK_SET) == 0);
	assert_se(lseek(dst2, 0, SEEK_SET) == 0);
	r = decompress(dst, dst2, st.st_size - 1);
	assert_se(r == -EFBIG);
	}
	#endif

	#if HAVE_LZ4
	static void test_lz4_decompress_partial(void) {
	char buf[20000], buf2[100];
	size_t buf_size = sizeof(buf), compressed;
	int r;
	_cleanup_free_ char *huge = NULL;

	log_debug("/* %s */", __func__);

	assert_se(huge = malloc(HUGE_SIZE));
	memcpy(huge, "HUGE=", STRLEN("HUGE="));
	memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
	huge[HUGE_SIZE - 1] = '\0';

	r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
	assert_se(r >= 0);
	compressed = r;
	log_info("Compressed %i → %zu", HUGE_SIZE, compressed);

	r = LZ4_decompress_safe(buf, huge, r, HUGE_SIZE);
	assert_se(r >= 0);
	log_info("Decompressed → %i", r);

	r = LZ4_decompress_safe_partial(buf, huge,
	compressed,
	12, HUGE_SIZE);
	assert_se(r >= 0);
	log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE, r);

	for (size_t size = 1; size < sizeof(buf2); size++) {
	/* This failed in older lz4s but works in newer ones. */
	r = LZ4_decompress_safe_partial(buf, buf2, compressed, size, size);
	log_info("Decompressed partial %zu/%zu → %i (%s)", size, size, r,
	r < 0 ? "bad" : "good");
	if (r >= 0 && LZ4_versionNumber() >= 10803)
	/* lz4 <= 1.8.2 should fail that test, let's only check for newer ones */
	assert_se(memcmp(buf2, huge, r) == 0);
	}
	}
	#endif

	int main(int argc, char *argv[]) {
	#if HAVE_COMPRESSION
	_unused_ const char text[] =
	"text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
	"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";

	/* The file to test compression on can be specified as the first argument */
	const char *srcfile = argc > 1 ? argv[1] : argv[0];

	char data[512] = "random\0";

	_cleanup_free_ char *huge = NULL;

	assert_se(huge = malloc(HUGE_SIZE));
	memcpy(huge, "HUGE=", STRLEN("HUGE="));
	memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
	huge[HUGE_SIZE - 1] = '\0';

	test_setup_logging(LOG_DEBUG);

	random_bytes(data + 7, sizeof(data) - 7);

	#if HAVE_XZ
	test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
	text, sizeof(text), false);
	test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
	data, sizeof(data), true);

	test_decompress_startswith("XZ",
	compress_blob_xz, decompress_startswith_xz,
	text, sizeof(text), false);
	test_decompress_startswith("XZ",
	compress_blob_xz, decompress_startswith_xz,
	data, sizeof(data), true);
	test_decompress_startswith("XZ",
	compress_blob_xz, decompress_startswith_xz,
	huge, HUGE_SIZE, true);

	test_compress_stream("XZ", "xzcat",
	compress_stream_xz, decompress_stream_xz, srcfile);

	test_decompress_startswith_short("XZ", compress_blob_xz, decompress_startswith_xz);

	#else
	log_info("/* XZ test skipped */");
	#endif

	#if HAVE_LZ4
	test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
	text, sizeof(text), false);
	test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
	data, sizeof(data), true);

	test_decompress_startswith("LZ4",
	compress_blob_lz4, decompress_startswith_lz4,
	text, sizeof(text), false);
	test_decompress_startswith("LZ4",
	compress_blob_lz4, decompress_startswith_lz4,
	data, sizeof(data), true);
	test_decompress_startswith("LZ4",
	compress_blob_lz4, decompress_startswith_lz4,
	huge, HUGE_SIZE, true);

	test_compress_stream("LZ4", "lz4cat",
	compress_stream_lz4, decompress_stream_lz4, srcfile);

	test_lz4_decompress_partial();

	test_decompress_startswith_short("LZ4", compress_blob_lz4, decompress_startswith_lz4);

	#else
	log_info("/* LZ4 test skipped */");
	#endif

	#if HAVE_ZSTD
	test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
	text, sizeof(text), false);
	test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
	data, sizeof(data), true);

	test_decompress_startswith("ZSTD",
	compress_blob_zstd, decompress_startswith_zstd,
	text, sizeof(text), false);
	test_decompress_startswith("ZSTD",
	compress_blob_zstd, decompress_startswith_zstd,
	data, sizeof(data), true);
	test_decompress_startswith("ZSTD",
	compress_blob_zstd, decompress_startswith_zstd,
	huge, HUGE_SIZE, true);

	test_compress_stream("ZSTD", "zstdcat",
	compress_stream_zstd, decompress_stream_zstd, srcfile);

	test_decompress_startswith_short("ZSTD", compress_blob_zstd, decompress_startswith_zstd);
	#else
	log_info("/* ZSTD test skipped */");
	#endif

	return 0;
	#else
	log_info("/* XZ, LZ4 and ZSTD tests skipped */");
	return EXIT_TEST_SKIP;
	#endif
	}