scrcpy/app/tests/test_strutil.c

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#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#define SDL_MAIN_HANDLED // avoid to redefine main to SDL_main
#include <SDL2/SDL.h>
2019-11-24 18:53:00 +08:00
#include "util/str_util.h"
static void test_xstrncpy_simple(void) {
char s[] = "xxxxxxxxxx";
size_t w = xstrncpy(s, "abcdef", sizeof(s));
// returns strlen of copied string
assert(w == 6);
// is nul-terminated
assert(s[6] == '\0');
// does not write useless bytes
assert(s[7] == 'x');
// copies the content as expected
assert(!strcmp("abcdef", s));
}
static void test_xstrncpy_just_fit(void) {
char s[] = "xxxxxx";
size_t w = xstrncpy(s, "abcdef", sizeof(s));
// returns strlen of copied string
assert(w == 6);
// is nul-terminated
assert(s[6] == '\0');
// copies the content as expected
assert(!strcmp("abcdef", s));
}
static void test_xstrncpy_truncated(void) {
char s[] = "xxx";
size_t w = xstrncpy(s, "abcdef", sizeof(s));
// returns 'n' (sizeof(s))
assert(w == 4);
// is nul-terminated
assert(s[3] == '\0');
// copies the content as expected
assert(!strncmp("abcdef", s, 3));
}
static void test_xstrjoin_simple(void) {
const char *const tokens[] = { "abc", "de", "fghi", NULL };
char s[] = "xxxxxxxxxxxxxx";
size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
// returns strlen of concatenation
assert(w == 11);
// is nul-terminated
assert(s[11] == '\0');
// does not write useless bytes
assert(s[12] == 'x');
// copies the content as expected
assert(!strcmp("abc de fghi", s));
}
static void test_xstrjoin_just_fit(void) {
const char *const tokens[] = { "abc", "de", "fghi", NULL };
char s[] = "xxxxxxxxxxx";
size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
// returns strlen of concatenation
assert(w == 11);
// is nul-terminated
assert(s[11] == '\0');
// copies the content as expected
assert(!strcmp("abc de fghi", s));
}
static void test_xstrjoin_truncated_in_token(void) {
const char *const tokens[] = { "abc", "de", "fghi", NULL };
char s[] = "xxxxx";
size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
// returns 'n' (sizeof(s))
assert(w == 6);
// is nul-terminated
assert(s[5] == '\0');
// copies the content as expected
assert(!strcmp("abc d", s));
}
static void test_xstrjoin_truncated_before_sep(void) {
const char *const tokens[] = { "abc", "de", "fghi", NULL };
char s[] = "xxxxxx";
size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
// returns 'n' (sizeof(s))
assert(w == 7);
// is nul-terminated
assert(s[6] == '\0');
// copies the content as expected
assert(!strcmp("abc de", s));
}
static void test_xstrjoin_truncated_after_sep(void) {
const char *const tokens[] = { "abc", "de", "fghi", NULL };
char s[] = "xxxxxxx";
size_t w = xstrjoin(s, tokens, ' ', sizeof(s));
// returns 'n' (sizeof(s))
assert(w == 8);
// is nul-terminated
assert(s[7] == '\0');
// copies the content as expected
assert(!strcmp("abc de ", s));
}
static void test_strquote(void) {
const char *s = "abcde";
char *out = strquote(s);
// add '"' at the beginning and the end
assert(!strcmp("\"abcde\"", out));
SDL_free(out);
}
static void test_utf8_truncate(void) {
const char *s = "aÉbÔc";
assert(strlen(s) == 7); // É and Ô are 2 bytes-wide
size_t count;
count = utf8_truncation_index(s, 1);
assert(count == 1);
count = utf8_truncation_index(s, 2);
assert(count == 1); // É is 2 bytes-wide
count = utf8_truncation_index(s, 3);
assert(count == 3);
count = utf8_truncation_index(s, 4);
assert(count == 4);
count = utf8_truncation_index(s, 5);
assert(count == 4); // Ô is 2 bytes-wide
count = utf8_truncation_index(s, 6);
assert(count == 6);
count = utf8_truncation_index(s, 7);
assert(count == 7);
count = utf8_truncation_index(s, 8);
assert(count == 7); // no more chars
}
static void test_parse_integer(void) {
long value;
bool ok = parse_integer("1234", &value);
assert(ok);
assert(value == 1234);
ok = parse_integer("-1234", &value);
assert(ok);
assert(value == -1234);
ok = parse_integer("1234k", &value);
assert(!ok);
ok = parse_integer("123456789876543212345678987654321", &value);
assert(!ok); // out-of-range
}
static void test_parse_integer_with_suffix(void) {
long value;
bool ok = parse_integer_with_suffix("1234", &value);
assert(ok);
assert(value == 1234);
ok = parse_integer_with_suffix("-1234", &value);
assert(ok);
assert(value == -1234);
ok = parse_integer_with_suffix("1234k", &value);
assert(ok);
assert(value == 1234000);
ok = parse_integer_with_suffix("1234m", &value);
assert(ok);
assert(value == 1234000000);
ok = parse_integer_with_suffix("-1234k", &value);
assert(ok);
assert(value == -1234000);
ok = parse_integer_with_suffix("-1234m", &value);
assert(ok);
assert(value == -1234000000);
ok = parse_integer_with_suffix("123456789876543212345678987654321", &value);
assert(!ok); // out-of-range
char buf[32];
sprintf(buf, "%ldk", LONG_MAX / 2000);
ok = parse_integer_with_suffix(buf, &value);
assert(ok);
assert(value == LONG_MAX / 2000 * 1000);
sprintf(buf, "%ldm", LONG_MAX / 2000);
ok = parse_integer_with_suffix(buf, &value);
assert(!ok);
sprintf(buf, "%ldk", LONG_MIN / 2000);
ok = parse_integer_with_suffix(buf, &value);
assert(ok);
assert(value == LONG_MIN / 2000 * 1000);
sprintf(buf, "%ldm", LONG_MIN / 2000);
ok = parse_integer_with_suffix(buf, &value);
assert(!ok);
}
int main(void) {
test_xstrncpy_simple();
test_xstrncpy_just_fit();
test_xstrncpy_truncated();
test_xstrjoin_simple();
test_xstrjoin_just_fit();
test_xstrjoin_truncated_in_token();
test_xstrjoin_truncated_before_sep();
test_xstrjoin_truncated_after_sep();
test_strquote();
test_utf8_truncate();
test_parse_integer();
test_parse_integer_with_suffix();
return 0;
}