cosmopolitan/test/libc/str/strcpy_test.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`et` means `expandtab`.

```sh
rg 'vi: .* :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\)  :vi/vi: \1 xoet\2:vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2  :vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/'
```
2023-12-07 22:17:11 -05:00

66 lines
3.2 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
TEST(strcpy, test) {
char buf[64];
EXPECT_STREQ("hello", strcpy(buf, "hello"));
EXPECT_STREQ("hello there what's up", strcpy(buf, "hello there what's up"));
}
TEST(strncpy, test) {
char b[8] = {0, 1, 2, 3, 4, 5, 6, 7};
strncpy(b, "key", 8);
ASSERT_EQ('k', b[0]);
ASSERT_EQ('e', b[1]);
ASSERT_EQ('y', b[2]);
ASSERT_EQ('\0', b[3]);
ASSERT_EQ('\0', b[4]);
ASSERT_EQ('\0', b[5]);
ASSERT_EQ('\0', b[6]);
ASSERT_EQ('\0', b[7]);
}
TEST(strncpy, testSameLength_isNotNulTerminated) {
char b[8] = {0, 1, 2, 3, 4, 5, 6, 7};
strncpy(b, "keyword", 7);
ASSERT_EQ('k', b[0]);
ASSERT_EQ('e', b[1]);
ASSERT_EQ('y', b[2]);
ASSERT_EQ('w', b[3]);
ASSERT_EQ('o', b[4]);
ASSERT_EQ('r', b[5]);
ASSERT_EQ('d', b[6]);
ASSERT_EQ(7, b[7]);
}
BENCH(strcpy, bench) {
extern char *strcpy_(char *, const char *) asm("strcpy");
static char buf[1024], buf2[1024];
memset(buf2, -1, sizeof(buf2) - 1);
EZBENCH2("strcpy 1", donothing, strcpy_(buf, ""));
EZBENCH2("strcpy 2", donothing, strcpy_(buf, "1"));
EZBENCH2("strcpy 7", donothing, strcpy_(buf, "123456"));
EZBENCH2("strcpy 8", donothing, strcpy_(buf, "1234567"));
EZBENCH2("strcpy 9", donothing, strcpy_(buf, "12345678"));
EZBENCH2("strcpy 16", donothing, strcpy_(buf, "123456781234567"));
EZBENCH2("strcpy 1023", donothing, strcpy_(buf, buf2));
}