cosmopolitan/test/libc/stdio/fmemopen_test.c
Justine Tunney f531acc8f9
Make improvements
- Invent openatemp() API
- Invent O_UNLINK open flag
- Introduce getenv_secure() API
- Remove `git pull` from cosmocc
- Fix utimes() when path is NULL
- Fix mktemp() to never return NULL
- Fix utimensat() UTIME_OMIT on XNU
- Improve utimensat() code for RHEL5
- Turn `argv[0]` C:/ to /C/ on Windows
- Introduce tmpnam() and tmpnam_r() APIs
- Fix more const issues with internal APIs
- Permit utimes() on WIN32 in O_RDONLY mode
- Fix fdopendir() to check fd is a directory
- Fix recent crash regression in landlock make
- Fix futimens(AT_FDCWD, NULL) to return EBADF
- Use workaround so `make -j` doesn't fork bomb
- Rename dontdiscard to __wur (just like glibc)
- Fix st_size for WIN32 symlinks containing UTF-8
- Introduce stdio ext APIs needed by GNU coreutils
- Fix lstat() on WIN32 for symlinks to directories
- Move some constants from normalize.inc to limits.h
- Fix segv with memchr() and memcmp() overlapping page
- Implement POSIX fflush() behavior for reader streams
- Implement AT_SYMLINK_NOFOLLOW for utimensat() on WIN32
- Don't change read-only status of existing files on WIN32
- Correctly handle `0x[^[:xdigit:]]` case in strtol() functions
2023-09-06 12:34:59 -07:00

77 lines
3.1 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net 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/calls/calls.h"
#include "libc/errno.h"
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/stdio/stdio.h"
#include "libc/temp.h"
#include "libc/testlib/testlib.h"
TEST(fmemopen, testWriteRewindRead) {
char c;
FILE *f;
f = fmemopen(NULL, BUFSIZ, "w+");
EXPECT_EQ(1, fwrite("c", 1, 1, f));
rewind(f);
EXPECT_EQ(1, fread(&c, 1, 1, f));
EXPECT_EQ('c', c);
fclose(f);
}
TEST(fmemopen_fprintf, test) {
FILE *f = fmemopen(NULL, BUFSIZ, "w+");
EXPECT_EQ(1, fprintf(f, "%ld", 0L));
rewind(f);
char buf[8] = {0};
EXPECT_EQ(1, fread(&buf, 1, 8, f));
EXPECT_STREQ("0", buf);
fclose(f);
}
TEST(fmemopen, seekEofRead) {
FILE *f = fmemopen("x", 1, "r+");
ASSERT_SYS(EINVAL, -1, fseek(f, -1, SEEK_SET));
ASSERT_SYS(EINVAL, -1, fseek(f, +1, SEEK_END));
ASSERT_EQ(0, fseek(f, 0, SEEK_END));
ASSERT_FALSE(feof(f));
ASSERT_EQ(-1, fgetc(f));
ASSERT_TRUE(feof(f));
fclose(f);
}
TEST(tmpfile_fprintf, test) {
FILE *f = tmpfile();
EXPECT_EQ(1, fprintf(f, "%ld", 0L));
rewind(f);
char buf[8] = {0};
EXPECT_EQ(1, fread(&buf, 1, 8, f));
EXPECT_STREQ("0", buf);
fclose(f);
}
TEST(fmemopen, small) {
FILE *f = fmemopen(gc(malloc(1)), 1, "w+");
EXPECT_EQ(3, fprintf(f, "%ld", 123L));
rewind(f);
char buf[8] = {0};
EXPECT_EQ(1, fread(&buf, 1, 8, f));
EXPECT_STREQ("1", buf);
fclose(f);
}