libarchive/test/test_write_filter_lz4.c - third_party/libarchive - Git at Google

 /*-
  * Copyright (c) 2014 Michihiro NAKAJIMA
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer
  *    in this position and unchanged.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "test.h"
 __FBSDID("$FreeBSD$");

 /*
  * A basic exercise of lz4 reading and writing.
  */

 DEFINE_TEST(test_write_filter_lz4)
 {
 	struct archive_entry *ae;
 	struct archive* a;
 	char *buff, *data;
 	size_t buffsize, datasize;
 	char path[16];
 	size_t used1, used2;
 	int i, r, use_prog = 0, filecount;

 	assert((a = archive_write_new()) != NULL);
 	r = archive_write_add_filter_lz4(a);
 	if (archive_liblz4_version() == NULL) {
 		if (!canLz4()) {
 			skipping("lz4 writing not supported on this platform");
 			assertEqualInt(ARCHIVE_WARN, r);
 			assertEqualInt(ARCHIVE_OK, archive_write_free(a));
 			return;
 		} else {
 			assertEqualInt(ARCHIVE_WARN, r);
 			use_prog = 1;
 		}
 	} else {
 		assertEqualInt(ARCHIVE_OK, r);
 	}
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	buffsize = 2000000;
 	assert(NULL != (buff = (char *)malloc(buffsize)));

 	datasize = 10000;
 	assert(NULL != (data = (char *)calloc(1, datasize)));
 	filecount = 10;

 	/*
 	 * Write a filecount files and read them all back.
 	 */
 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_per_block(a, 1024));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_in_last_block(a, 1024));
 	assertEqualInt(ARCHIVE_FILTER_LZ4, archive_filter_code(a, 0));
 	assertEqualString("lz4", archive_filter_name(a, 0));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_open_memory(a, buff, buffsize, &used1));
 	assert((ae = archive_entry_new()) != NULL);
 	archive_entry_set_filetype(ae, AE_IFREG);
 	archive_entry_set_size(ae, datasize);
 	for (i = 0; i < filecount; i++) {
 		sprintf(path, "file%03d", i);
 		archive_entry_copy_pathname(ae, path);
 		assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
 		assertA(datasize
 		    == (size_t)archive_write_data(a, data, datasize));
 	}
 	archive_entry_free(ae);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	assert((a = archive_read_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
 	r = archive_read_support_filter_lz4(a);
 	if (r == ARCHIVE_WARN) {
 		skipping("Can't verify lz4 writing by reading back;"
 		    " lz4 reading not fully supported on this platform");
 		assertEqualInt(ARCHIVE_OK, archive_read_free(a));
 		return;
 	}

 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_read_open_memory(a, buff, used1));
 	for (i = 0; i < filecount; i++) {
 		sprintf(path, "file%03d", i);
 		if (!assertEqualInt(ARCHIVE_OK,
 			archive_read_next_header(a, &ae)))
 			break;
 		assertEqualString(path, archive_entry_pathname(ae));
 		assertEqualInt((int)datasize, archive_entry_size(ae));
 	}
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

 	/*
 	 * Repeat the cycle again, this time setting some compression
 	 * options.
 	 */
 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_per_block(a, 10));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualIntA(a, ARCHIVE_FAILED,
 	    archive_write_set_options(a, "lz4:nonexistent-option=0"));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_options(a, "lz4:compression-level=1"));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_filter_option(a, NULL, "compression-level", "9"));
 	assertEqualIntA(a, ARCHIVE_FAILED,
 	    archive_write_set_filter_option(a, NULL, "compression-level", "abc"));
 	assertEqualIntA(a, ARCHIVE_FAILED,
 	    archive_write_set_filter_option(a, NULL, "compression-level", "99"));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_options(a, "lz4:compression-level=9"));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_open_memory(a, buff, buffsize, &used2));
 	for (i = 0; i < filecount; i++) {
 		sprintf(path, "file%03d", i);
 		assert((ae = archive_entry_new()) != NULL);
 		archive_entry_copy_pathname(ae, path);
 		archive_entry_set_size(ae, datasize);
 		archive_entry_set_filetype(ae, AE_IFREG);
 		assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
 		assertA(datasize == (size_t)archive_write_data(
 		    a, data, datasize));
 		archive_entry_free(ae);
 	}
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	failure("compression-level=9 wrote %d bytes, default wrote %d bytes",
 	    (int)used2, (int)used1);
 	assert(used2 < used1);

 	assert((a = archive_read_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
 	r = archive_read_support_filter_lz4(a);
 	if (r != ARCHIVE_OK && !use_prog) {
 		skipping("lz4 reading not fully supported on this platform");
 	} else {
 		assertEqualIntA(a, ARCHIVE_OK,
 		    archive_read_support_filter_all(a));
 		assertEqualIntA(a, ARCHIVE_OK,
 		    archive_read_open_memory(a, buff, used2));
 		for (i = 0; i < filecount; i++) {
 			sprintf(path, "file%03d", i);
 			if (!assertEqualInt(ARCHIVE_OK,
 				archive_read_next_header(a, &ae)))
 				break;
 			assertEqualString(path, archive_entry_pathname(ae));
 			assertEqualInt((int)datasize, archive_entry_size(ae));
 		}
 		assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
 	}
 	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

 	/*
 	 * Repeat again, with much lower compression.
 	 */
 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_per_block(a, 10));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_filter_option(a, NULL, "compression-level", "1"));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_open_memory(a, buff, buffsize, &used2));
 	for (i = 0; i < filecount; i++) {
 		sprintf(path, "file%03d", i);
 		assert((ae = archive_entry_new()) != NULL);
 		archive_entry_copy_pathname(ae, path);
 		archive_entry_set_size(ae, datasize);
 		archive_entry_set_filetype(ae, AE_IFREG);
 		assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
 		failure("Writing file %s", path);
 		assertEqualIntA(a, datasize,
 		    (size_t)archive_write_data(a, data, datasize));
 		archive_entry_free(ae);
 	}
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 #if 0
 	failure("Compression-level=1 wrote %d bytes; default wrote %d bytes",
 	    (int)used2, (int)used1);
 	assert(used2 > used1);
 #endif

 	assert((a = archive_read_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));
 	r = archive_read_support_filter_lz4(a);
 	if (r == ARCHIVE_WARN) {
 		skipping("lz4 reading not fully supported on this platform");
 	} else {
 		assertEqualIntA(a, ARCHIVE_OK,
 		    archive_read_open_memory(a, buff, used2));
 		for (i = 0; i < filecount; i++) {
 			sprintf(path, "file%03d", i);
 			if (!assertEqualInt(ARCHIVE_OK,
 				archive_read_next_header(a, &ae)))
 				break;
 			assertEqualString(path, archive_entry_pathname(ae));
 			assertEqualInt((int)datasize, archive_entry_size(ae));
 		}
 		assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
 	}
 	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

 	/*
 	 * Test various premature shutdown scenarios to make sure we
 	 * don't crash or leak memory.
 	 */
 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_open_memory(a, buff, buffsize, &used2));
 	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	/*
 	 * Clean up.
 	 */
 	free(data);
 	free(buff);
 }

 static void
 test_options(const char *options)
 {
 	struct archive_entry *ae;
 	struct archive* a;
 	char *buff, *data;
 	size_t buffsize, datasize;
 	char path[16];
 	size_t used1;
 	int i, r, use_prog = 0, filecount;

 	assert((a = archive_write_new()) != NULL);
 	r = archive_write_add_filter_lz4(a);
 	if (archive_liblz4_version() == NULL) {
 		if (!canLz4()) {
 			skipping("lz4 writing not supported on this platform");
 			assertEqualInt(ARCHIVE_WARN, r);
 			assertEqualInt(ARCHIVE_OK, archive_write_free(a));
 			return;
 		} else {
 			assertEqualInt(ARCHIVE_WARN, r);
 			use_prog = 1;
 		}
 	} else {
 		assertEqualInt(ARCHIVE_OK, r);
 	}
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	buffsize = 2000000;
 	assert(NULL != (buff = (char *)malloc(buffsize)));

 	datasize = 10000;
 	assert(NULL != (data = (char *)calloc(1, datasize)));
 	filecount = 10;

 	/*
 	 * Write a filecount files and read them all back.
 	 */
 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
 	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
 	    archive_write_add_filter_lz4(a));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_options(a, options));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_per_block(a, 1024));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_set_bytes_in_last_block(a, 1024));
 	assertEqualInt(ARCHIVE_FILTER_LZ4, archive_filter_code(a, 0));
 	assertEqualString("lz4", archive_filter_name(a, 0));
 	assertEqualIntA(a, ARCHIVE_OK,
 	    archive_write_open_memory(a, buff, buffsize, &used1));
 	assert((ae = archive_entry_new()) != NULL);
 	archive_entry_set_filetype(ae, AE_IFREG);
 	archive_entry_set_size(ae, datasize);
 	for (i = 0; i < filecount; i++) {
 		sprintf(path, "file%03d", i);
 		archive_entry_copy_pathname(ae, path);
 		assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
 		assertA(datasize
 		    == (size_t)archive_write_data(a, data, datasize));
 	}
 	archive_entry_free(ae);
 	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
 	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

 	assert((a = archive_read_new()) != NULL);
 	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
 	r = archive_read_support_filter_lz4(a);
 	if (r == ARCHIVE_WARN) {
 		skipping("Can't verify lz4 writing by reading back;"
 		    " lz4 reading not fully supported on this platform");
 	} else {
 		assertEqualIntA(a, ARCHIVE_OK,
 		    archive_read_open_memory(a, buff, used1));
 		for (i = 0; i < filecount; i++) {
 			sprintf(path, "file%03d", i);
 			if (!assertEqualInt(ARCHIVE_OK,
 				archive_read_next_header(a, &ae)))
 				break;
 			assertEqualString(path, archive_entry_pathname(ae));
 			assertEqualInt((int)datasize, archive_entry_size(ae));
 		}
 		assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
 	}
 	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

 	/*
 	 * Clean up.
 	 */
 	free(data);
 	free(buff);
 }

 DEFINE_TEST(test_write_filter_lz4_disable_stream_checksum)
 {
 	test_options("lz4:!stream-checksum");
 }

 DEFINE_TEST(test_write_filter_lz4_enable_block_checksum)
 {
 	test_options("lz4:block-checksum");
 }

 DEFINE_TEST(test_write_filter_lz4_block_size_4)
 {
 	test_options("lz4:block-size=4");
 }

 DEFINE_TEST(test_write_filter_lz4_block_size_5)
 {
 	test_options("lz4:block-size=5");
 }

 DEFINE_TEST(test_write_filter_lz4_block_size_6)
 {
 	test_options("lz4:block-size=6");
 }

 DEFINE_TEST(test_write_filter_lz4_block_dependence)
 {
 	test_options("lz4:block-dependence");
 }

 /*
  * TODO: Figure out how to correctly handle this.
  *
  * This option simply fails on some versions of the LZ4 libraries.
  */
 /*
 XXXDEFINE_TEST(test_write_filter_lz4_block_dependence_hc)
 {
 	test_options("lz4:block-dependence,lz4:compression-level=9");
 }
 */
	/*-
	* Copyright (c) 2014 Michihiro NAKAJIMA
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer
	* in this position and unchanged.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "test.h"
	__FBSDID("$FreeBSD$");

	/*
	* A basic exercise of lz4 reading and writing.
	*/

	DEFINE_TEST(test_write_filter_lz4)
	{
	struct archive_entry *ae;
	struct archive* a;
	char buff, data;
	size_t buffsize, datasize;
	char path[16];
	size_t used1, used2;
	int i, r, use_prog = 0, filecount;

	assert((a = archive_write_new()) != NULL);
	r = archive_write_add_filter_lz4(a);
	if (archive_liblz4_version() == NULL) {
	if (!canLz4()) {
	skipping("lz4 writing not supported on this platform");
	assertEqualInt(ARCHIVE_WARN, r);
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));
	return;
	} else {
	assertEqualInt(ARCHIVE_WARN, r);
	use_prog = 1;
	}
	} else {
	assertEqualInt(ARCHIVE_OK, r);
	}
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	buffsize = 2000000;
	assert(NULL != (buff = (char *)malloc(buffsize)));

	datasize = 10000;
	assert(NULL != (data = (char *)calloc(1, datasize)));
	filecount = 10;

	/*
	* Write a filecount files and read them all back.
	*/
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_per_block(a, 1024));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_in_last_block(a, 1024));
	assertEqualInt(ARCHIVE_FILTER_LZ4, archive_filter_code(a, 0));
	assertEqualString("lz4", archive_filter_name(a, 0));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_open_memory(a, buff, buffsize, &used1));
	assert((ae = archive_entry_new()) != NULL);
	archive_entry_set_filetype(ae, AE_IFREG);
	archive_entry_set_size(ae, datasize);
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	archive_entry_copy_pathname(ae, path);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
	assertA(datasize
	== (size_t)archive_write_data(a, data, datasize));
	}
	archive_entry_free(ae);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_read_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
	r = archive_read_support_filter_lz4(a);
	if (r == ARCHIVE_WARN) {
	skipping("Can't verify lz4 writing by reading back;"
	" lz4 reading not fully supported on this platform");
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));
	return;
	}

	assertEqualIntA(a, ARCHIVE_OK,
	archive_read_open_memory(a, buff, used1));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	if (!assertEqualInt(ARCHIVE_OK,
	archive_read_next_header(a, &ae)))
	break;
	assertEqualString(path, archive_entry_pathname(ae));
	assertEqualInt((int)datasize, archive_entry_size(ae));
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

	/*
	* Repeat the cycle again, this time setting some compression
	* options.
	*/
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_per_block(a, 10));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualIntA(a, ARCHIVE_FAILED,
	archive_write_set_options(a, "lz4:nonexistent-option=0"));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_options(a, "lz4:compression-level=1"));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_filter_option(a, NULL, "compression-level", "9"));
	assertEqualIntA(a, ARCHIVE_FAILED,
	archive_write_set_filter_option(a, NULL, "compression-level", "abc"));
	assertEqualIntA(a, ARCHIVE_FAILED,
	archive_write_set_filter_option(a, NULL, "compression-level", "99"));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_options(a, "lz4:compression-level=9"));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_open_memory(a, buff, buffsize, &used2));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	assert((ae = archive_entry_new()) != NULL);
	archive_entry_copy_pathname(ae, path);
	archive_entry_set_size(ae, datasize);
	archive_entry_set_filetype(ae, AE_IFREG);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
	assertA(datasize == (size_t)archive_write_data(
	a, data, datasize));
	archive_entry_free(ae);
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	failure("compression-level=9 wrote %d bytes, default wrote %d bytes",
	(int)used2, (int)used1);
	assert(used2 < used1);

	assert((a = archive_read_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
	r = archive_read_support_filter_lz4(a);
	if (r != ARCHIVE_OK && !use_prog) {
	skipping("lz4 reading not fully supported on this platform");
	} else {
	assertEqualIntA(a, ARCHIVE_OK,
	archive_read_support_filter_all(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_read_open_memory(a, buff, used2));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	if (!assertEqualInt(ARCHIVE_OK,
	archive_read_next_header(a, &ae)))
	break;
	assertEqualString(path, archive_entry_pathname(ae));
	assertEqualInt((int)datasize, archive_entry_size(ae));
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
	}
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

	/*
	* Repeat again, with much lower compression.
	*/
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_per_block(a, 10));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_filter_option(a, NULL, "compression-level", "1"));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_open_memory(a, buff, buffsize, &used2));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	assert((ae = archive_entry_new()) != NULL);
	archive_entry_copy_pathname(ae, path);
	archive_entry_set_size(ae, datasize);
	archive_entry_set_filetype(ae, AE_IFREG);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
	failure("Writing file %s", path);
	assertEqualIntA(a, datasize,
	(size_t)archive_write_data(a, data, datasize));
	archive_entry_free(ae);
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	#if 0
	failure("Compression-level=1 wrote %d bytes; default wrote %d bytes",
	(int)used2, (int)used1);
	assert(used2 > used1);
	#endif

	assert((a = archive_read_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));
	r = archive_read_support_filter_lz4(a);
	if (r == ARCHIVE_WARN) {
	skipping("lz4 reading not fully supported on this platform");
	} else {
	assertEqualIntA(a, ARCHIVE_OK,
	archive_read_open_memory(a, buff, used2));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	if (!assertEqualInt(ARCHIVE_OK,
	archive_read_next_header(a, &ae)))
	break;
	assertEqualString(path, archive_entry_pathname(ae));
	assertEqualInt((int)datasize, archive_entry_size(ae));
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
	}
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

	/*
	* Test various premature shutdown scenarios to make sure we
	* don't crash or leak memory.
	*/
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_open_memory(a, buff, buffsize, &used2));
	assertEqualInt(ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	/*
	* Clean up.
	*/
	free(data);
	free(buff);
	}

	static void
	test_options(const char *options)
	{
	struct archive_entry *ae;
	struct archive* a;
	char buff, data;
	size_t buffsize, datasize;
	char path[16];
	size_t used1;
	int i, r, use_prog = 0, filecount;

	assert((a = archive_write_new()) != NULL);
	r = archive_write_add_filter_lz4(a);
	if (archive_liblz4_version() == NULL) {
	if (!canLz4()) {
	skipping("lz4 writing not supported on this platform");
	assertEqualInt(ARCHIVE_WARN, r);
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));
	return;
	} else {
	assertEqualInt(ARCHIVE_WARN, r);
	use_prog = 1;
	}
	} else {
	assertEqualInt(ARCHIVE_OK, r);
	}
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	buffsize = 2000000;
	assert(NULL != (buff = (char *)malloc(buffsize)));

	datasize = 10000;
	assert(NULL != (data = (char *)calloc(1, datasize)));
	filecount = 10;

	/*
	* Write a filecount files and read them all back.
	*/
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	archive_write_add_filter_lz4(a));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_options(a, options));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_per_block(a, 1024));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_set_bytes_in_last_block(a, 1024));
	assertEqualInt(ARCHIVE_FILTER_LZ4, archive_filter_code(a, 0));
	assertEqualString("lz4", archive_filter_name(a, 0));
	assertEqualIntA(a, ARCHIVE_OK,
	archive_write_open_memory(a, buff, buffsize, &used1));
	assert((ae = archive_entry_new()) != NULL);
	archive_entry_set_filetype(ae, AE_IFREG);
	archive_entry_set_size(ae, datasize);
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	archive_entry_copy_pathname(ae, path);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
	assertA(datasize
	== (size_t)archive_write_data(a, data, datasize));
	}
	archive_entry_free(ae);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_read_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
	r = archive_read_support_filter_lz4(a);
	if (r == ARCHIVE_WARN) {
	skipping("Can't verify lz4 writing by reading back;"
	" lz4 reading not fully supported on this platform");
	} else {
	assertEqualIntA(a, ARCHIVE_OK,
	archive_read_open_memory(a, buff, used1));
	for (i = 0; i < filecount; i++) {
	sprintf(path, "file%03d", i);
	if (!assertEqualInt(ARCHIVE_OK,
	archive_read_next_header(a, &ae)))
	break;
	assertEqualString(path, archive_entry_pathname(ae));
	assertEqualInt((int)datasize, archive_entry_size(ae));
	}
	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
	}
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

	/*
	* Clean up.
	*/
	free(data);
	free(buff);
	}

	DEFINE_TEST(test_write_filter_lz4_disable_stream_checksum)
	{
	test_options("lz4:!stream-checksum");
	}

	DEFINE_TEST(test_write_filter_lz4_enable_block_checksum)
	{
	test_options("lz4:block-checksum");
	}

	DEFINE_TEST(test_write_filter_lz4_block_size_4)
	{
	test_options("lz4:block-size=4");
	}

	DEFINE_TEST(test_write_filter_lz4_block_size_5)
	{
	test_options("lz4:block-size=5");
	}

	DEFINE_TEST(test_write_filter_lz4_block_size_6)
	{
	test_options("lz4:block-size=6");
	}

	DEFINE_TEST(test_write_filter_lz4_block_dependence)
	{
	test_options("lz4:block-dependence");
	}

	/*
	* TODO: Figure out how to correctly handle this.
	*
	* This option simply fails on some versions of the LZ4 libraries.
	*/
	/*
	XXXDEFINE_TEST(test_write_filter_lz4_block_dependence_hc)
	{
	test_options("lz4:block-dependence,lz4:compression-level=9");
	}
	*/