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annotate tests/unistr/test-strncat.h @ 40057:b06060465f09

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maint: Run 'make update-copyright'
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 01 Jan 2019 00:25:11 +0100
parents 10eb9086bea0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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c3306b011528 Tests for module 'unistr/u8-strncat'.
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1 /* Test of uN_strncat() functions.
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2 Copyright (C) 2010-2019 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
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16
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17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */
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18
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19 static void
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20 check_single (const UNIT *input, size_t length, size_t n)
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21 {
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22 static const UNIT base[] = { 'C', 'h', 'a', 'n', 'g', 'i', 'n', 'g', 0 };
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23 size_t m;
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24
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25 for (m = 0; m < SIZEOF (base); m++)
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26 {
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27 UNIT *dest;
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28 UNIT *result;
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29 size_t i;
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30
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31 dest = (UNIT *) malloc ((1 + m + n + 2) * sizeof (UNIT));
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32 ASSERT (dest != NULL);
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33
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34 dest[0] = MAGIC;
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35 for (i = 0; i < m; i++)
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36 dest[1 + i] = base[i];
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37 dest[1 + m] = 0;
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38 for (i = 1; i < n + 2; i++)
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39 dest[1 + m + i] = MAGIC;
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40
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41 result = U_STRNCAT (dest + 1, input, n);
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42 ASSERT (result == dest + 1);
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43
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44 ASSERT (dest[0] == MAGIC);
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45 for (i = 0; i < m; i++)
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46 ASSERT (dest[1 + i] == base[i]);
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47 for (i = 0; i < (n <= length ? n : length); i++)
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48 ASSERT (dest[1 + m + i] == input[i]);
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49 ASSERT (dest[1 + m + i] == 0);
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50 ASSERT (dest[1 + m + i + 1] == MAGIC);
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51
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52 free (dest);
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53 }
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54 }
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55
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56 static void
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57 check (const UNIT *input, size_t input_length)
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58 {
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59 size_t length;
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60 size_t n;
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61
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62 ASSERT (input_length > 0);
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63 ASSERT (input[input_length - 1] == 0);
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64 length = input_length - 1; /* = U_STRLEN (input) */
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65
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66 for (n = 0; n <= 2 * length + 2; n++)
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67 check_single (input, length, n);
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68
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69 /* Check that U_STRNCAT (D, S, N) does not look at more than
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70 MIN (U_STRLEN (S) + 1, N) units. */
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71 {
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72 char *page_boundary = (char *) zerosize_ptr ();
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73
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74 if (page_boundary != NULL)
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75 {
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76 for (n = 0; n <= 2 * length + 2; n++)
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77 {
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78 size_t n_to_copy = (n <= length ? n : length + 1);
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79 UNIT *copy;
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80 size_t i;
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81
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82 copy = (UNIT *) page_boundary - n_to_copy;
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83 for (i = 0; i < n_to_copy; i++)
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84 copy[i] = input[i];
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85
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86 check_single (copy, length, n);
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87 }
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88 }
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89 }
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90 }