diff options
Diffstat (limited to 'support/tst-test_compare_blob.c')
| -rw-r--r-- | support/tst-test_compare_blob.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/support/tst-test_compare_blob.c b/support/tst-test_compare_blob.c new file mode 100644 index 0000000000..aa8643e182 --- /dev/null +++ b/support/tst-test_compare_blob.c @@ -0,0 +1,125 @@ +/* Basic test for the TEST_COMPARE_BLOB 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_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> |