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140 lines
3.2 KiB
C
140 lines
3.2 KiB
C
#include <assert.h>
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#include <string.h>
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#include "str_util.h"
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static void test_xstrncpy_simple() {
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char s[] = "xxxxxxxxxx";
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size_t w = xstrncpy(s, "abcdef", sizeof(s));
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// returns strlen of copied string
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assert(w == 6);
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// is nul-terminated
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assert(s[6] == '\0');
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// does not write useless bytes
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assert(s[7] == 'x');
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// copies the content as expected
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assert(!strcmp("abcdef", s));
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}
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static void test_xstrncpy_just_fit() {
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char s[] = "xxxxxx";
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size_t w = xstrncpy(s, "abcdef", sizeof(s));
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// returns strlen of copied string
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assert(w == 6);
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// is nul-terminated
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assert(s[6] == '\0');
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// copies the content as expected
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assert(!strcmp("abcdef", s));
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}
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static void test_xstrncpy_truncated() {
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char s[] = "xxx";
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size_t w = xstrncpy(s, "abcdef", sizeof(s));
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// returns 'n' (sizeof(s))
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assert(w == 4);
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// is nul-terminated
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assert(s[3] == '\0');
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// copies the content as expected
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assert(!strncmp("abcdef", s, 3));
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}
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static void test_xstrjoin_simple() {
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const char *const tokens[] = { "abc", "de", "fghi", NULL };
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char s[] = "xxxxxxxxxxxxxx";
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size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
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// returns strlen of concatenation
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assert(w == 11);
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// is nul-terminated
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assert(s[11] == '\0');
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// does not write useless bytes
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assert(s[12] == 'x');
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// copies the content as expected
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assert(!strcmp("abc de fghi", s));
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}
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static void test_xstrjoin_just_fit() {
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const char *const tokens[] = { "abc", "de", "fghi", NULL };
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char s[] = "xxxxxxxxxxx";
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size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
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// returns strlen of concatenation
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assert(w == 11);
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// is nul-terminated
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assert(s[11] == '\0');
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// copies the content as expected
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assert(!strcmp("abc de fghi", s));
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}
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static void test_xstrjoin_truncated_in_token() {
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const char *const tokens[] = { "abc", "de", "fghi", NULL };
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char s[] = "xxxxx";
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size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
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// returns 'n' (sizeof(s))
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assert(w == 6);
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// is nul-terminated
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assert(s[5] == '\0');
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// copies the content as expected
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assert(!strcmp("abc d", s));
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}
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static void test_xstrjoin_truncated_before_sep() {
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const char *const tokens[] = { "abc", "de", "fghi", NULL };
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char s[] = "xxxxxx";
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size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
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// returns 'n' (sizeof(s))
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assert(w == 7);
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// is nul-terminated
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assert(s[6] == '\0');
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// copies the content as expected
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assert(!strcmp("abc de", s));
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}
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static void test_xstrjoin_truncated_after_sep() {
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const char *const tokens[] = { "abc", "de", "fghi", NULL };
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char s[] = "xxxxxxx";
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size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
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// returns 'n' (sizeof(s))
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assert(w == 8);
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// is nul-terminated
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assert(s[7] == '\0');
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// copies the content as expected
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assert(!strcmp("abc de ", s));
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}
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int main() {
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test_xstrncpy_simple();
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test_xstrncpy_just_fit();
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test_xstrncpy_truncated();
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test_xstrjoin_simple();
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test_xstrjoin_just_fit();
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test_xstrjoin_truncated_in_token();
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test_xstrjoin_truncated_before_sep();
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test_xstrjoin_truncated_after_sep();
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return 0;
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}
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