/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-â
âvi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :viâ
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â Copyright 2021 Justine Alexandra Roberts Tunney                              â
â                                                                              â
â Permission to use, copy, modify, and/or distribute this software for         â
â any purpose with or without fee is hereby granted, provided that the         â
â above copyright notice and this permission notice appear in all copies.      â
â                                                                              â
â THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                â
â WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                â
â WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             â
â AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         â
â DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        â
â PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               â
â TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             â
â PERFORMANCE OF THIS SOFTWARE.                                                â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/state.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"

char testlib_enable_tmp_setup_teardown;

TEST(vfork, test) {
  int fd;
  char buf[8] = {0};
  ASSERT_NE(-1, (fd = open("vfork_test", O_RDWR | O_CREAT, 0644)));
  ASSERT_EQ(5, write(fd, "hello", 5));
  ASSERT_NE(-1, lseek(fd, 0, SEEK_SET));
  if (!vfork()) {
    EXPECT_EQ(5, pread(fd, buf, 5, 0));
    ASSERT_NE(-1, lseek(fd, 0, SEEK_SET));
    EXPECT_STREQ("hello", buf);
    EXPECT_NE(-1, close(fd));
    _exit(0);
  }
  EXPECT_EQ(0, __vforked);
  EXPECT_NE(-1, wait(0));
  EXPECT_EQ(5, read(fd, buf, 5));
  EXPECT_STREQ("hello", buf);
  EXPECT_NE(-1, close(fd));
}
