/* Basic test for the TEST_COMPARE_STRING macro.

   Copyright (C) 2018 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

   <http://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_STRING ("", NULL);             /* Line 29.  */

  TEST_COMPARE_STRING ("X", "");              /* Line 30.  */

  TEST_COMPARE_STRING (NULL, "X");            /* Line 31.  */

  TEST_COMPARE_STRING ("abcd", "abcD");       /* Line 32.  */

  TEST_COMPARE_STRING ("abcd", NULL);         /* Line 33.  */

  TEST_COMPARE_STRING (NULL, "abcd");         /* 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_STRING (NULL, NULL);

  TEST_COMPARE_STRING ("", "");

  TEST_COMPARE_STRING (buffer_abc_1, buffer_abc_2);

  TEST_COMPARE_STRING (buffer_abc_1, "abc");

  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_string.c:29: error: blob comparison failed\n"

"  left string: 0 bytes\n"

"  right string: NULL\n"

"tst-test_compare_string.c:30: error: blob comparison failed\n"

"  left string: 1 bytes\n"

"  right string: 0 bytes\n"

"  left (evaluated from \"X\"):\n"

"      \"X\"\n"

"      58\n"

"tst-test_compare_string.c:31: error: blob comparison failed\n"

"  left string: NULL\n"

"  right string: 1 bytes\n"

"  right (evaluated from \"X\"):\n"

"      \"X\"\n"

"      58\n"

"tst-test_compare_string.c:32: error: blob comparison failed\n"

"  string 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_string.c:33: error: blob comparison failed\n"

"  left string: 4 bytes\n"

"  right string: NULL\n"

"  left (evaluated from \"abcd\"):\n"

"      \"abcd\"\n"

"      61 62 63 64\n"

"tst-test_compare_string.c:34: error: blob comparison failed\n"

"  left string: NULL\n"

"  right string: 4 bytes\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_STRING",

                                    0, sc_allow_stdout);

  return 0;

}

#include <support/test-driver.c>