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annotate tests/test-getdelim.c @ 40186:8964917f9574

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author Karl Berry <karl@freefriends.org>
date Mon, 18 Feb 2019 08:02:49 -0800
parents b06060465f09
children
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1 /* Test of getdelim() function.
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2 Copyright (C) 2007-2019 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, or (at your option)
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7 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 Eric Blake <ebb9@byu.net>, 2007. */
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18
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19 #include <config.h>
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20
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21 #include <stdio.h>
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22
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23 #include "signature.h"
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24 SIGNATURE_CHECK (getdelim, ssize_t, (char **, size_t *, int, FILE *));
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25
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 #include "macros.h"
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30
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31 int
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32 main (void)
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33 {
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34 FILE *f;
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35 char *line;
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36 size_t len;
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37 ssize_t result;
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38
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39 /* Create test file. */
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40 f = fopen ("test-getdelim.txt", "wb");
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41 if (!f || fwrite ("anAnbcnd\0f", 1, 10, f) != 10 || fclose (f) != 0)
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42 {
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43 fputs ("Failed to create sample file.\n", stderr);
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44 remove ("test-getdelim.txt");
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45 return 1;
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46 }
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47 f = fopen ("test-getdelim.txt", "rb");
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48 if (!f)
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49 {
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50 fputs ("Failed to reopen sample file.\n", stderr);
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51 remove ("test-getdelim.txt");
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52 return 1;
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53 }
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54
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55 /* Test initial allocation, which must include trailing NUL. */
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56 line = NULL;
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57 len = 0;
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58 result = getdelim (&line, &len, 'n', f);
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59 ASSERT (result == 2);
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60 ASSERT (strcmp (line, "an") == 0);
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61 ASSERT (2 < len);
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62 free (line);
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63
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64 /* Test initial allocation again, with line = NULL and len != 0. */
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65 line = NULL;
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66 len = (size_t)(~0) / 4;
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67 result = getdelim (&line, &len, 'n', f);
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68 ASSERT (result == 2);
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69 ASSERT (strcmp (line, "An") == 0);
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70 ASSERT (2 < len);
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71 free (line);
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72
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73 /* Test growth of buffer. */
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74 line = malloc (1);
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75 len = 1;
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76 result = getdelim (&line, &len, 'n', f);
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77 ASSERT (result == 3);
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78 ASSERT (strcmp (line, "bcn") == 0);
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79 ASSERT (3 < len);
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80
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81 /* Test embedded NULs and EOF behavior. */
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82 result = getdelim (&line, &len, 'n', f);
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83 ASSERT (result == 3);
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84 ASSERT (memcmp (line, "d\0f", 4) == 0);
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85 ASSERT (3 < len);
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86
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87 result = getdelim (&line, &len, 'n', f);
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88 ASSERT (result == -1);
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89
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90 free (line);
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91 fclose (f);
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92 remove ("test-getdelim.txt");
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93 return 0;
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94 }