glibc/support/tst-test_compare_blob.c

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/* Basic test for the TEST_COMPARE_BLOB macro.
Copyright (C) 2018-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
<https://www.gnu.org/licenses/>. */
#include <string.h>
#include <support/check.h>
#include <support/capture_subprocess.h>
static void
subprocess (void *closure)
{
/* These tests should fail. They were chosen to cover differences
in length (with the same contents), single-bit mismatches, and
mismatching null pointers. */
TEST_COMPARE_BLOB ("", 0, "", 1); /* Line 29. */
TEST_COMPARE_BLOB ("X", 1, "", 1); /* Line 30. */
TEST_COMPARE_BLOB ("abcd", 3, "abcd", 4); /* Line 31. */
TEST_COMPARE_BLOB ("abcd", 4, "abcD", 4); /* Line 32. */
TEST_COMPARE_BLOB ("abcd", 4, NULL, 0); /* Line 33. */
TEST_COMPARE_BLOB (NULL, 0, "abcd", 4); /* Line 34. */
}
/* Same contents, different addresses. */
char buffer_abc_1[] = "abc";
char buffer_abc_2[] = "abc";
static int
do_test (void)
{
/* This should succeed. Even if the pointers and array contents are
different, zero-length inputs are not different. */
TEST_COMPARE_BLOB ("", 0, "", 0);
TEST_COMPARE_BLOB ("", 0, buffer_abc_1, 0);
TEST_COMPARE_BLOB (buffer_abc_1, 0, "", 0);
TEST_COMPARE_BLOB (NULL, 0, "", 0);
TEST_COMPARE_BLOB ("", 0, NULL, 0);
TEST_COMPARE_BLOB (NULL, 0, NULL, 0);
/* Check equality of blobs containing a single NUL byte. */
TEST_COMPARE_BLOB ("", 1, "", 1);
TEST_COMPARE_BLOB ("", 1, &buffer_abc_1[3], 1);
/* Check equality of blobs of varying lengths. */
for (size_t i = 0; i <= sizeof (buffer_abc_1); ++i)
TEST_COMPARE_BLOB (buffer_abc_1, i, buffer_abc_2, i);
struct support_capture_subprocess proc = support_capture_subprocess
(&subprocess, NULL);
/* Discard the reported error. */
support_record_failure_reset ();
puts ("info: *** subprocess output starts ***");
fputs (proc.out.buffer, stdout);
puts ("info: *** subprocess output ends ***");
TEST_VERIFY
(strcmp (proc.out.buffer,
"tst-test_compare_blob.c:29: error: blob comparison failed\n"
" left length: 0 bytes (from 0)\n"
" right length: 1 bytes (from 1)\n"
" right (evaluated from \"\"):\n"
" \"\\000\"\n"
" 00\n"
"tst-test_compare_blob.c:30: error: blob comparison failed\n"
" blob length: 1 bytes\n"
" left (evaluated from \"X\"):\n"
" \"X\"\n"
" 58\n"
" right (evaluated from \"\"):\n"
" \"\\000\"\n"
" 00\n"
"tst-test_compare_blob.c:31: error: blob comparison failed\n"
" left length: 3 bytes (from 3)\n"
" right length: 4 bytes (from 4)\n"
" left (evaluated from \"abcd\"):\n"
" \"abc\"\n"
" 61 62 63\n"
" right (evaluated from \"abcd\"):\n"
" \"abcd\"\n"
" 61 62 63 64\n"
"tst-test_compare_blob.c:32: error: blob comparison failed\n"
" blob length: 4 bytes\n"
" left (evaluated from \"abcd\"):\n"
" \"abcd\"\n"
" 61 62 63 64\n"
" right (evaluated from \"abcD\"):\n"
" \"abcD\"\n"
" 61 62 63 44\n"
"tst-test_compare_blob.c:33: error: blob comparison failed\n"
" left length: 4 bytes (from 4)\n"
" right length: 0 bytes (from 0)\n"
" left (evaluated from \"abcd\"):\n"
" \"abcd\"\n"
" 61 62 63 64\n"
"tst-test_compare_blob.c:34: error: blob comparison failed\n"
" left length: 0 bytes (from 0)\n"
" right length: 4 bytes (from 4)\n"
" right (evaluated from \"abcd\"):\n"
" \"abcd\"\n"
" 61 62 63 64\n"
) == 0);
/* Check that there is no output on standard error. */
support_capture_subprocess_check (&proc, "TEST_COMPARE_BLOB",
0, sc_allow_stdout);
return 0;
}
#include <support/test-driver.c>