source: SVN/cambria/redboot/packages/language/c/libc/string/current/tests/strncpy2.c @ 1

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1//=================================================================
2//
3//        strncpy2.c
4//
5//        Testcase for C library strncpy()
6//
7//=================================================================
8//####ECOSGPLCOPYRIGHTBEGIN####
9// -------------------------------------------
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11// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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25//
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27// or inline functions from this file, or you compile this file and link it
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37// at http://sources.redhat.com/ecos/ecos-license/
38// -------------------------------------------
39//####ECOSGPLCOPYRIGHTEND####
40//=================================================================
41//#####DESCRIPTIONBEGIN####
42//
43// Author(s):     ctarpy, jlarmour
44// Contributors: 
45// Date:          2000-04-30
46// Description:   Contains testcode for C library strncpy() function
47//
48//
49//####DESCRIPTIONEND####
50
51// INCLUDES
52
53#include <string.h>
54#include <cyg/infra/testcase.h>
55
56// CONSTANTS
57
58#define NUM_ROBUSTNESS_RUNS 300
59
60// FUNCTIONS
61
62// Functions to avoid having to use libc strings
63
64static int my_strlen(const char *s)
65{
66    const char *ptr;
67
68    ptr = s;
69    for ( ptr=s ; *ptr != '\0' ; ptr++ )
70        ;
71
72    return (int)(ptr-s);
73} // my_strlen()
74
75
76static int my_strcmp(const char *s1, const char *s2)
77{
78    for ( ; *s1 == *s2 ; s1++,s2++ )
79    {
80        if ( *s1 == '\0' )
81            break;
82    } // for
83
84    return (*s1 - *s2);
85} // my_strcmp()
86
87
88static char *my_strcpy(char *s1, const char *s2)
89{
90    while (*s2 != '\0') {
91        *(s1++) = *(s2++);
92    }
93    *s1 = '\0';
94
95    return s1; 
96} // my_strcpy()
97
98
99int main( int argc, char *argv[] )
100{
101    char x[300];
102    char y[300];
103    char *ret;
104    int ctr;
105    int fail;
106
107    CYG_TEST_INIT();
108
109    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
110                  "strncpy() function");
111    CYG_TEST_INFO("This testcase tests robustness, and may take some time");
112
113    fail = 0;
114    for (ctr = 0; ctr < NUM_ROBUSTNESS_RUNS; ctr++) {
115        my_strcpy(x, "Green plastic watering can, ");
116        my_strcpy(y, "for her fake Chineese rubber plant");
117        ret = strncpy(x, y, my_strlen(y)+1);
118        if ( (my_strcmp(x, "for her fake Chineese rubber plant") != 0) ||
119             ( ret != x ) )
120        {
121            fail = 1;
122            break;
123        } // if
124    } // for
125    CYG_TEST_PASS_FAIL( (fail == 0), "Robustness test" );
126
127//    CYG_TEST_NA("Testing is not applicable to this configuration");
128
129    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
130                    "strncpy() function");
131} // main()
132
133// EOF strncpy2.c
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