126 lines
4.2 KiB
C
126 lines
4.2 KiB
C
/* Basic test for the TEST_COMPARE_BLOB macro.
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Copyright (C) 2018-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <support/check.h>
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#include <support/capture_subprocess.h>
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static void
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subprocess (void *closure)
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{
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/* These tests should fail. They were chosen to cover differences
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in length (with the same contents), single-bit mismatches, and
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mismatching null pointers. */
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TEST_COMPARE_BLOB ("", 0, "", 1); /* Line 29. */
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TEST_COMPARE_BLOB ("X", 1, "", 1); /* Line 30. */
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TEST_COMPARE_BLOB ("abcd", 3, "abcd", 4); /* Line 31. */
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TEST_COMPARE_BLOB ("abcd", 4, "abcD", 4); /* Line 32. */
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TEST_COMPARE_BLOB ("abcd", 4, NULL, 0); /* Line 33. */
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TEST_COMPARE_BLOB (NULL, 0, "abcd", 4); /* Line 34. */
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}
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/* Same contents, different addresses. */
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char buffer_abc_1[] = "abc";
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char buffer_abc_2[] = "abc";
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static int
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do_test (void)
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{
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/* This should succeed. Even if the pointers and array contents are
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different, zero-length inputs are not different. */
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TEST_COMPARE_BLOB ("", 0, "", 0);
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TEST_COMPARE_BLOB ("", 0, buffer_abc_1, 0);
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TEST_COMPARE_BLOB (buffer_abc_1, 0, "", 0);
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TEST_COMPARE_BLOB (NULL, 0, "", 0);
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TEST_COMPARE_BLOB ("", 0, NULL, 0);
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TEST_COMPARE_BLOB (NULL, 0, NULL, 0);
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/* Check equality of blobs containing a single NUL byte. */
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TEST_COMPARE_BLOB ("", 1, "", 1);
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TEST_COMPARE_BLOB ("", 1, &buffer_abc_1[3], 1);
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/* Check equality of blobs of varying lengths. */
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for (size_t i = 0; i <= sizeof (buffer_abc_1); ++i)
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TEST_COMPARE_BLOB (buffer_abc_1, i, buffer_abc_2, i);
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struct support_capture_subprocess proc = support_capture_subprocess
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(&subprocess, NULL);
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/* Discard the reported error. */
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support_record_failure_reset ();
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puts ("info: *** subprocess output starts ***");
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fputs (proc.out.buffer, stdout);
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puts ("info: *** subprocess output ends ***");
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TEST_VERIFY
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(strcmp (proc.out.buffer,
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"tst-test_compare_blob.c:29: error: blob comparison failed\n"
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" left length: 0 bytes (from 0)\n"
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" right length: 1 bytes (from 1)\n"
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" right (evaluated from \"\"):\n"
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" \"\\000\"\n"
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" 00\n"
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"tst-test_compare_blob.c:30: error: blob comparison failed\n"
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" blob length: 1 bytes\n"
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" left (evaluated from \"X\"):\n"
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" \"X\"\n"
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" 58\n"
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" right (evaluated from \"\"):\n"
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" \"\\000\"\n"
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" 00\n"
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"tst-test_compare_blob.c:31: error: blob comparison failed\n"
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" left length: 3 bytes (from 3)\n"
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" right length: 4 bytes (from 4)\n"
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" left (evaluated from \"abcd\"):\n"
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" \"abc\"\n"
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" 61 62 63\n"
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" right (evaluated from \"abcd\"):\n"
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" \"abcd\"\n"
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" 61 62 63 64\n"
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"tst-test_compare_blob.c:32: error: blob comparison failed\n"
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" blob length: 4 bytes\n"
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" left (evaluated from \"abcd\"):\n"
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" \"abcd\"\n"
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" 61 62 63 64\n"
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" right (evaluated from \"abcD\"):\n"
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" \"abcD\"\n"
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" 61 62 63 44\n"
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"tst-test_compare_blob.c:33: error: blob comparison failed\n"
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" left length: 4 bytes (from 4)\n"
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" right length: 0 bytes (from 0)\n"
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" left (evaluated from \"abcd\"):\n"
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" \"abcd\"\n"
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" 61 62 63 64\n"
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"tst-test_compare_blob.c:34: error: blob comparison failed\n"
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" left length: 0 bytes (from 0)\n"
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" right length: 4 bytes (from 4)\n"
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" right (evaluated from \"abcd\"):\n"
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" \"abcd\"\n"
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" 61 62 63 64\n"
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) == 0);
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/* Check that there is no output on standard error. */
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support_capture_subprocess_check (&proc, "TEST_COMPARE_BLOB",
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0, sc_allow_stdout);
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return 0;
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}
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#include <support/test-driver.c>
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