thodg/got/regress/deltify/deltify_test.c

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• Hash : f34b169e
  Author :
  Date : 2021-06-18T13:28:25
  

  Allow for skipping the base object header in got_deltify().

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• regress/deltify/deltify_test.c

• /*
   * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <sys/queue.h>
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <err.h>
  #include <unistd.h>
  #include <getopt.h>
  
  #include "got_error.h"
  #include "got_opentemp.h"
  
  #include "got_lib_deltify.h"
  
  #ifndef nitems
  #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
  #endif
  
  static int
  deltify_abc_axc(void)
  {
  	const struct got_error *err = NULL;
  	size_t i;
  	FILE *base_file, *derived_file, *result_file;
  	struct got_delta_table *dt;
  	struct got_delta_instruction *deltas;
  	int ndeltas;
  	int have_nblocks = 0;
  
  	base_file = got_opentemp();
  	if (base_file == NULL)
  		return 1;
  
  	derived_file = got_opentemp();
  	if (derived_file == NULL)
  		return 1;
  
  	result_file = got_opentemp();
  	if (result_file == NULL)
  		return 1;
  
  	for (i = 0; i < GOT_DELTIFY_MAXCHUNK; i++) {
  		fputc('a', base_file);
  		fputc('a', derived_file);
  	}
  	for (i = 0; i < GOT_DELTIFY_MAXCHUNK; i++) {
  		fputc('b', base_file);
  		fputc('x', derived_file);
  	}
  	for (i = 0; i < GOT_DELTIFY_MAXCHUNK; i++) {
  		fputc('c', base_file);
  		fputc('c', derived_file);
  	}
  
  	rewind(base_file);
  	rewind(derived_file);
  
  	err = got_deltify_init(&dt, base_file, 0, 3 * GOT_DELTIFY_MAXCHUNK);
  	if (err)
  		goto done;
  
  	for (i = 0; i < dt->nalloc; i++) {
  		if (dt->blocks[i].len > 0)
  			have_nblocks++;
  	}
  	if (have_nblocks != dt->nblocks) {
  		err = got_error(GOT_ERR_BAD_DELTA);
  		goto done;
  	}
  
  	err = got_deltify(&deltas, &ndeltas, derived_file, 0,
  	    3 * GOT_DELTIFY_MAXCHUNK, dt, base_file, 0,
  	    3 * GOT_DELTIFY_MAXCHUNK);
  	if (err)
  		goto done;
  
  	if (ndeltas != 3) {
  		err = got_error(GOT_ERR_BAD_DELTA);
  		goto done;
  	}
  	/* Copy 'aaaa...' from base file. */
  	if (!(deltas[0].copy == 1 && deltas[0].offset == 0 &&
  	    deltas[0].len == GOT_DELTIFY_MAXCHUNK)) {
  		err = got_error(GOT_ERR_BAD_DELTA);
  		goto done;
  	}
  	/* Copy 'xxxx...' from derived file. */
  	if (!(deltas[1].copy == 0 && deltas[1].offset == GOT_DELTIFY_MAXCHUNK &&
  	    deltas[1].len == GOT_DELTIFY_MAXCHUNK)) {
  		err = got_error(GOT_ERR_BAD_DELTA);
  		goto done;
  	}
  	/* Copy 'ccccc...' from base file. */
  	if (!(deltas[2].copy == 1 &&
  	    deltas[2].offset == 2 * GOT_DELTIFY_MAXCHUNK &&
  	    deltas[2].len == GOT_DELTIFY_MAXCHUNK)) {
  		err = got_error(GOT_ERR_BAD_DELTA);
  		goto done;
  	}
  
  done:
  	got_deltify_free(dt);
  	fclose(base_file);
  	fclose(derived_file);
  	fclose(result_file);
  	return (err == NULL);
  }
  
  static int quiet;
  
  #define RUN_TEST(expr, name) \
  	{ test_ok = (expr);  \
  	if (!quiet) printf("test_%s %s\n", (name), test_ok ? "ok" : "failed"); \
  	failure = (failure || !test_ok); }
  
  static void
  usage(void)
  {
  	fprintf(stderr, "usage: delta_test [-q]\n");
  }
  
  int
  main(int argc, char *argv[])
  {
  	int test_ok;
  	int failure = 0;
  	int ch;
  
  	while ((ch = getopt(argc, argv, "q")) != -1) {
  		switch (ch) {
  		case 'q':
  			quiet = 1;
  			break;
  		default:
  			usage();
  			return 1;
  		}
  	}
  
  	argc -= optind;
  	argv += optind;
  
  	if (argc != 0) {
  		usage();
  		return 1;
  	}
  
  #ifndef PROFILE
  	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
  		err(1, "pledge");
  #endif
  	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
  		err(1, "unveil");
  
  	if (unveil(NULL, NULL) != 0)
  		err(1, "unveil");
  
  	RUN_TEST(deltify_abc_axc(), "deltify_abc_axc");
  
  	return failure ? 1 : 0;
  }
  

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