/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#include <string.h>

#include <fcntl.h>

#if defined(__APPLE__) && !TARGET_OS_IPHONE

# include <AvailabilityMacros.h>

#endif

#ifndef HAVE_KQUEUE

# if defined(__APPLE__) ||                                                    \

     defined(__DragonFly__) ||                                                \

     defined(__FreeBSD__) ||                                                  \

     defined(__FreeBSD_kernel__) ||                                           \

     defined(__OpenBSD__) ||                                                  \

     defined(__NetBSD__)

#  define HAVE_KQUEUE 1

# endif

#endif

#if defined(__arm__)/* Increase the timeout so the test passes on arm CI bots */

# define CREATE_TIMEOUT 100

#else

# define CREATE_TIMEOUT 1

#endif

static uv_fs_event_t fs_event;

static const char file_prefix[] = "fsevent-";

static const int fs_event_file_count = 16;

#if defined(__APPLE__) || defined(_WIN32)

static const char file_prefix_in_subdir[] = "subdir";

static int fs_multievent_cb_called;

#endif

static uv_timer_t timer;

static int timer_cb_called;

static int close_cb_called;

static int fs_event_created;

static int fs_event_removed;

static int fs_event_cb_called;

#if defined(PATH_MAX)

static char fs_event_filename[PATH_MAX];

#else

static char fs_event_filename[1024];

#endif  /* defined(PATH_MAX) */

static int timer_cb_touch_called;

static int timer_cb_exact_called;

static void fs_event_fail(uv_fs_event_t* handle,

                          const char* filename,

                          int events,

                          int status) {

  ASSERT(0 && "should never be called");

}

static void create_dir(const char* name) {

  int r;

  uv_fs_t req;

  r = uv_fs_mkdir(NULL, &req, name, 0755, NULL);

  ASSERT(r == 0 || r == UV_EEXIST);

  uv_fs_req_cleanup(&req;;

}

static void create_file(const char* name) {

  int r;

  uv_file file;

  uv_fs_t req;

  r = uv_fs_open(NULL, &req, name, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR, NULL);

  ASSERT(r >= 0);

  file = r;

  uv_fs_req_cleanup(&req;;

  r = uv_fs_close(NULL, &req, file, NULL);

  ASSERT(r == 0);

  uv_fs_req_cleanup(&req;;

}

static void touch_file(const char* name) {

  int r;

  uv_file file;

  uv_fs_t req;

  uv_buf_t buf;

  r = uv_fs_open(NULL, &req, name, O_RDWR, 0, NULL);

  ASSERT(r >= 0);

  file = r;

  uv_fs_req_cleanup(&req;;

  buf = uv_buf_init("foo", 4);

  r = uv_fs_write(NULL, &req, file, &buf, 1, -1, NULL);

  ASSERT(r >= 0);

  uv_fs_req_cleanup(&req;;

  r = uv_fs_close(NULL, &req, file, NULL);

  ASSERT(r == 0);

  uv_fs_req_cleanup(&req;;

}

static void close_cb(uv_handle_t* handle) {

  ASSERT(handle != NULL);

  close_cb_called++;

}

static void fail_cb(uv_fs_event_t* handle,

                    const char* path,

                    int events,

                    int status) {

  ASSERT(0 && "fail_cb called");

}

static void fs_event_cb_dir(uv_fs_event_t* handle, const char* filename,

  int events, int status) {

  ++fs_event_cb_called;

  ASSERT(handle == &fs_event);

  ASSERT(status == 0);

  ASSERT(events == UV_CHANGE);

  #if defined(__APPLE__) || defined(_WIN32) || defined(__linux__)

  ASSERT(strcmp(filename, "file1") == 0);

  #else

  ASSERT(filename == NULL || strcmp(filename, "file1") == 0);

  #endif

  ASSERT(0 == uv_fs_event_stop(handle));

  uv_close((uv_handle_t*)handle, close_cb);

}

static const char* fs_event_get_filename(int i) {

  snprintf(fs_event_filename,

           sizeof(fs_event_filename),

           "watch_dir/%s%d",

           file_prefix,

           i);

  return fs_event_filename;

}

static void fs_event_create_files(uv_timer_t* handle) {

  /* Make sure we're not attempting to create files we do not intend */

  ASSERT(fs_event_created < fs_event_file_count);

  /* Create the file */

  create_file(fs_event_get_filename(fs_event_created));

  if (++fs_event_created < fs_event_file_count) {

    /* Create another file on a different event loop tick.  We do it this way

     * to avoid fs events coalescing into one fs event. */

    ASSERT(0 == uv_timer_start(&timer,

                               fs_event_create_files,

                               CREATE_TIMEOUT,

                               0));

  }

}

static void fs_event_unlink_files(uv_timer_t* handle) {

  int r;

  int i;

  /* NOTE: handle might be NULL if invoked not as timer callback */

  if (handle == NULL) {

    /* Unlink all files */

    for (i = 0; i < 16; i++) {

      r = remove(fs_event_get_filename(i));

      if (handle != NULL)

        ASSERT(r == 0);

    }

  } else {

    /* Make sure we're not attempting to remove files we do not intend */

    ASSERT(fs_event_removed < fs_event_file_count);

    /* Remove the file */

    ASSERT(0 == remove(fs_event_get_filename(fs_event_removed)));

    if (++fs_event_removed < fs_event_file_count) {

      /* Remove another file on a different event loop tick.  We do it this way

       * to avoid fs events coalescing into one fs event. */

      ASSERT(0 == uv_timer_start(&timer, fs_event_unlink_files, 1, 0));

    }

  }

}

static void fs_event_cb_dir_multi_file(uv_fs_event_t* handle,

                                       const char* filename,

                                       int events,

                                       int status) {

  fs_event_cb_called++;

  ASSERT(handle == &fs_event);

  ASSERT(status == 0);

  ASSERT(events == UV_CHANGE || events == UV_RENAME);

  #if defined(__APPLE__) || defined(_WIN32) || defined(__linux__)

  ASSERT(strncmp(filename, file_prefix, sizeof(file_prefix) - 1) == 0);

  #else

  ASSERT(filename == NULL ||

         strncmp(filename, file_prefix, sizeof(file_prefix) - 1) == 0);

  #endif

  if (fs_event_created + fs_event_removed == fs_event_file_count) {

    /* Once we've processed all create events, delete all files */

    ASSERT(0 == uv_timer_start(&timer, fs_event_unlink_files, 1, 0));

  } else if (fs_event_cb_called == 2 * fs_event_file_count) {

    /* Once we've processed all create and delete events, stop watching */

    uv_close((uv_handle_t*) &timer, close_cb);

    uv_close((uv_handle_t*) handle, close_cb);

  }

}

#if defined(__APPLE__) || defined(_WIN32)

static const char* fs_event_get_filename_in_subdir(int i) {

  snprintf(fs_event_filename,

           sizeof(fs_event_filename),

           "watch_dir/subdir/%s%d",

           file_prefix,

           i);

  return fs_event_filename;

}

static void fs_event_create_files_in_subdir(uv_timer_t* handle) {

  /* Make sure we're not attempting to create files we do not intend */

  ASSERT(fs_event_created < fs_event_file_count);

  /* Create the file */

  create_file(fs_event_get_filename_in_subdir(fs_event_created));

  if (++fs_event_created < fs_event_file_count) {

    /* Create another file on a different event loop tick.  We do it this way

     * to avoid fs events coalescing into one fs event. */

    ASSERT(0 == uv_timer_start(&timer, fs_event_create_files_in_subdir, 1, 0));

  }

}

static void fs_event_unlink_files_in_subdir(uv_timer_t* handle) {

  int r;

  int i;

  /* NOTE: handle might be NULL if invoked not as timer callback */

  if (handle == NULL) {

    /* Unlink all files */

    for (i = 0; i < 16; i++) {

      r = remove(fs_event_get_filename_in_subdir(i));

      if (handle != NULL)

        ASSERT(r == 0);

    }

  } else {

    /* Make sure we're not attempting to remove files we do not intend */

    ASSERT(fs_event_removed < fs_event_file_count);

    /* Remove the file */

    ASSERT(0 == remove(fs_event_get_filename_in_subdir(fs_event_removed)));

    if (++fs_event_removed < fs_event_file_count) {

      /* Remove another file on a different event loop tick.  We do it this way

       * to avoid fs events coalescing into one fs event. */

      ASSERT(0 == uv_timer_start(&timer, fs_event_unlink_files_in_subdir, 1, 0));

    }

  }

}

static void fs_event_cb_dir_multi_file_in_subdir(uv_fs_event_t* handle,

                                                 const char* filename,

                                                 int events,

                                                 int status) {

#ifdef _WIN32

  /* Each file created (or deleted) will cause this callback to be called twice

   * under Windows: once with the name of the file, and second time with the

   * name of the directory. We will ignore the callback for the directory

   * itself. */

  if (filename && strcmp(filename, file_prefix_in_subdir) == 0)

    return;

#endif

  /* It may happen that the "subdir" creation event is captured even though

   * we started watching after its actual creation.

   */

  if (strcmp(filename, "subdir") == 0)

    return;

  fs_multievent_cb_called++;

  ASSERT(handle == &fs_event);

  ASSERT(status == 0);

  ASSERT(events == UV_CHANGE || events == UV_RENAME);

  #if defined(__APPLE__) || defined(_WIN32) || defined(__linux__)

  ASSERT(strncmp(filename,

                 file_prefix_in_subdir,

                 sizeof(file_prefix_in_subdir) - 1) == 0);

  #else

  ASSERT(filename == NULL ||

         strncmp(filename,

                 file_prefix_in_subdir,

                 sizeof(file_prefix_in_subdir) - 1) == 0);

  #endif

  if (fs_event_created == fs_event_file_count &&

      fs_multievent_cb_called == fs_event_created) {

    /* Once we've processed all create events, delete all files */

    ASSERT(0 == uv_timer_start(&timer, fs_event_unlink_files_in_subdir, 1, 0));

  } else if (fs_multievent_cb_called == 2 * fs_event_file_count) {

    /* Once we've processed all create and delete events, stop watching */

    ASSERT(fs_event_removed == fs_event_file_count);

    uv_close((uv_handle_t*) &timer, close_cb);

    uv_close((uv_handle_t*) handle, close_cb);

  }

}

#endif

static void fs_event_cb_file(uv_fs_event_t* handle, const char* filename,

  int events, int status) {

  ++fs_event_cb_called;

  ASSERT(handle == &fs_event);

  ASSERT(status == 0);

  ASSERT(events == UV_CHANGE);

  #if defined(__APPLE__) || defined(_WIN32) || defined(__linux__)

  ASSERT(strcmp(filename, "file2") == 0);

  #else

  ASSERT(filename == NULL || strcmp(filename, "file2") == 0);

  #endif

  ASSERT(0 == uv_fs_event_stop(handle));

  uv_close((uv_handle_t*)handle, close_cb);

}

static void timer_cb_close_handle(uv_timer_t* timer) {

  uv_handle_t* handle;

  ASSERT(timer != NULL);

  handle = timer->data;

  uv_close((uv_handle_t*)timer, NULL);

  uv_close((uv_handle_t*)handle, close_cb);

}

static void fs_event_cb_file_current_dir(uv_fs_event_t* handle,

  const char* filename, int events, int status) {

  ASSERT(fs_event_cb_called == 0);

  ++fs_event_cb_called;

  ASSERT(handle == &fs_event);

  ASSERT(status == 0);

  ASSERT(events == UV_CHANGE);

  #if defined(__APPLE__) || defined(_WIN32) || defined(__linux__)

  ASSERT(strcmp(filename, "watch_file") == 0);

  #else

  ASSERT(filename == NULL || strcmp(filename, "watch_file") == 0);

  #endif

  /* Regression test for SunOS: touch should generate just one event. */

  {

    static uv_timer_t timer;

    uv_timer_init(handle->loop, &timer;;

    timer.data = handle;

    uv_timer_start(&timer, timer_cb_close_handle, 250, 0);

  }

}

static void timer_cb_file(uv_timer_t* handle) {

  ++timer_cb_called;

  if (timer_cb_called == 1) {

    touch_file("watch_dir/file1");

  } else {

    touch_file("watch_dir/file2");

    uv_close((uv_handle_t*)handle, close_cb);

  }

}

static void timer_cb_touch(uv_timer_t* timer) {

  uv_close((uv_handle_t*)timer, NULL);

  touch_file("watch_file");

  timer_cb_touch_called++;

}

static void timer_cb_exact(uv_timer_t* handle) {

  int r;

  if (timer_cb_exact_called == 0) {

    touch_file("watch_dir/file.js");

  } else {

    uv_close((uv_handle_t*)handle, NULL);

    r = uv_fs_event_stop(&fs_event);

    ASSERT(r == 0);

    uv_close((uv_handle_t*) &fs_event, NULL);

  }

  ++timer_cb_exact_called;

}

static void timer_cb_watch_twice(uv_timer_t* handle) {

  uv_fs_event_t* handles = handle->data;

  uv_close((uv_handle_t*) (handles + 0), NULL);

  uv_close((uv_handle_t*) (handles + 1), NULL);

  uv_close((uv_handle_t*) handle, NULL);

}

static void fs_event_cb_close(uv_fs_event_t* handle,

                              const char* filename,

                              int events,

                              int status) {

  ASSERT(status == 0);

  ASSERT(fs_event_cb_called < 3);

  ++fs_event_cb_called;

  if (fs_event_cb_called == 3) {

    uv_close((uv_handle_t*) handle, close_cb);

  }

}

TEST_IMPL(fs_event_watch_dir) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#elif defined(__MVS__)

  RETURN_SKIP("Directory watching not supported on this platform.");

#endif

  uv_loop_t* loop = uv_default_loop();

  int r;

  /* Setup */

  fs_event_unlink_files(NULL);

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/");

  create_dir("watch_dir");

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event, fs_event_cb_dir_multi_file, "watch_dir", 0);

  ASSERT(r == 0);

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, fs_event_create_files, 100, 0);

  ASSERT(r == 0);

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(fs_event_cb_called == fs_event_created + fs_event_removed);

  ASSERT(close_cb_called == 2);

  /* Cleanup */

  fs_event_unlink_files(NULL);

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(fs_event_watch_dir_recursive) {

#if defined(__APPLE__) || defined(_WIN32)

  uv_loop_t* loop;

  int r;

  uv_fs_event_t fs_event_root;

  /* Setup */

  loop = uv_default_loop();

  fs_event_unlink_files(NULL);

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/subdir");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_dir("watch_dir/subdir");

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event,

                        fs_event_cb_dir_multi_file_in_subdir,

                        "watch_dir",

                        UV_FS_EVENT_RECURSIVE);

  ASSERT(r == 0);

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, fs_event_create_files_in_subdir, 100, 0);

  ASSERT(r == 0);

#ifndef _WIN32

  /* Also try to watch the root directory.

   * This will be noisier, so we're just checking for any couple events to happen. */

  r = uv_fs_event_init(loop, &fs_event_root);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event_root,

                        fs_event_cb_close,

                        "/",

                        UV_FS_EVENT_RECURSIVE);

  ASSERT(r == 0);

#else

  fs_event_cb_called += 3;

  close_cb_called += 1;

  (void)fs_event_root;

#endif

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(fs_multievent_cb_called == fs_event_created + fs_event_removed);

  ASSERT(fs_event_cb_called == 3);

  ASSERT(close_cb_called == 3);

  /* Cleanup */

  fs_event_unlink_files_in_subdir(NULL);

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/subdir");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

#else

  RETURN_SKIP("Recursive directory watching not supported on this platform.");

#endif

}

#ifdef _WIN32

TEST_IMPL(fs_event_watch_dir_short_path) {

  uv_loop_t* loop;

  uv_fs_t req;

  int has_shortnames;

  int r;

  /* Setup */

  loop = uv_default_loop();

  remove("watch_dir/file1");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_file("watch_dir/file1");

  /* Newer version of Windows ship with

     HKLM\SYSTEM\CurrentControlSet\Control\FileSystem\NtfsDisable8dot3NameCreation

     not equal to 0. So we verify the files we created are addressable by a 8.3

     short name */

  has_shortnames = uv_fs_stat(NULL, &req, "watch_~1", NULL) != UV_ENOENT;

  if (has_shortnames) {

    r = uv_fs_event_init(loop, &fs_event);

    ASSERT(r == 0);

    r = uv_fs_event_start(&fs_event, fs_event_cb_dir, "watch_~1", 0);

    ASSERT(r == 0);

    r = uv_timer_init(loop, &timer;;

    ASSERT(r == 0);

    r = uv_timer_start(&timer, timer_cb_file, 100, 0);

    ASSERT(r == 0);

    uv_run(loop, UV_RUN_DEFAULT);

    ASSERT(fs_event_cb_called == 1);

    ASSERT(timer_cb_called == 1);

    ASSERT(close_cb_called == 1);

  }

  /* Cleanup */

  remove("watch_dir/file1");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  if (!has_shortnames)

    RETURN_SKIP("Was not able to address files with 8.3 short name.");

  return 0;

}

#endif

TEST_IMPL(fs_event_watch_file) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_loop_t* loop = uv_default_loop();

  int r;

  /* Setup */

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_file("watch_dir/file1");

  create_file("watch_dir/file2");

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event, fs_event_cb_file, "watch_dir/file2", 0);

  ASSERT(r == 0);

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, timer_cb_file, 100, 100);

  ASSERT(r == 0);

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(fs_event_cb_called == 1);

  ASSERT(timer_cb_called == 2);

  ASSERT(close_cb_called == 2);

  /* Cleanup */

  remove("watch_dir/file2");

  remove("watch_dir/file1");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(fs_event_watch_file_exact_path) {

  /*

    This test watches a file named "file.jsx" and modifies a file named

    "file.js". The test verifies that no events occur for file.jsx.

  */

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_loop_t* loop;

  int r;

  loop = uv_default_loop();

  /* Setup */

  remove("watch_dir/file.js");

  remove("watch_dir/file.jsx");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_file("watch_dir/file.js");

  create_file("watch_dir/file.jsx");

#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_12)

  /* Empirically, FSEvents seems to (reliably) report the preceeding

   * create_file events prior to macOS 10.11.6 in the subsequent fs_watch

   * creation, but that behavior hasn't been observed to occur on newer

   * versions. Give a long delay here to let the system settle before running

   * the test. */

  uv_sleep(1100);

  uv_update_time(loop);

#endif

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event, fs_event_fail, "watch_dir/file.jsx", 0);

  ASSERT(r == 0);

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, timer_cb_exact, 100, 100);

  ASSERT(r == 0);

  r = uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(r == 0);

  ASSERT(timer_cb_exact_called == 2);

  /* Cleanup */

  remove("watch_dir/file.js");

  remove("watch_dir/file.jsx");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(fs_event_watch_file_twice) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  const char path[] = "test/fixtures/empty_file";

  uv_fs_event_t watchers[2];

  uv_timer_t timer;

  uv_loop_t* loop;

  loop = uv_default_loop();

  timer.data = watchers;

  ASSERT(0 == uv_fs_event_init(loop, watchers + 0));

  ASSERT(0 == uv_fs_event_start(watchers + 0, fail_cb, path, 0));

  ASSERT(0 == uv_fs_event_init(loop, watchers + 1));

  ASSERT(0 == uv_fs_event_start(watchers + 1, fail_cb, path, 0));

  ASSERT(0 == uv_timer_init(loop, &timer));

  ASSERT(0 == uv_timer_start(&timer, timer_cb_watch_twice, 10, 0));

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(fs_event_watch_file_current_dir) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_timer_t timer;

  uv_loop_t* loop;

  int r;

  loop = uv_default_loop();

  /* Setup */

  remove("watch_file");

  create_file("watch_file");

#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_12)

  /* Empirically, kevent seems to (sometimes) report the preceeding

   * create_file events prior to macOS 10.11.6 in the subsequent fs_event_start

   * So let the system settle before running the test. */

  uv_sleep(1100);

  uv_update_time(loop);

#endif

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event,

                        fs_event_cb_file_current_dir,

                        "watch_file",

                        0);

  ASSERT(r == 0);

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, timer_cb_touch, 1100, 0);

  ASSERT(r == 0);

  ASSERT(timer_cb_touch_called == 0);

  ASSERT(fs_event_cb_called == 0);

  ASSERT(close_cb_called == 0);

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(timer_cb_touch_called == 1);

  ASSERT(fs_event_cb_called == 1);

  ASSERT(close_cb_called == 1);

  /* Cleanup */

  remove("watch_file");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

#ifdef _WIN32

TEST_IMPL(fs_event_watch_file_root_dir) {

  uv_loop_t* loop;

  int r;

  const char* sys_drive = getenv("SystemDrive");

  char path[] = "\\\\?\\X:\\bootsect.bak";

  ASSERT(sys_drive != NULL);

  strncpy(path + sizeof("\\\\?\\") - 1, sys_drive, 1);

  loop = uv_default_loop();

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event, fail_cb, path, 0);

  if (r == UV_ENOENT)

    RETURN_SKIP("bootsect.bak doesn't exist in system root.\n");

  ASSERT(r == 0);

  uv_close((uv_handle_t*) &fs_event, NULL);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

#endif

TEST_IMPL(fs_event_no_callback_after_close) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_loop_t* loop = uv_default_loop();

  int r;

  /* Setup */

  remove("watch_dir/file1");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_file("watch_dir/file1");

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event,

                        fs_event_cb_file,

                        "watch_dir/file1",

                        0);

  ASSERT(r == 0);

  uv_close((uv_handle_t*)&fs_event, close_cb);

  touch_file("watch_dir/file1");

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(fs_event_cb_called == 0);

  ASSERT(close_cb_called == 1);

  /* Cleanup */

  remove("watch_dir/file1");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(fs_event_no_callback_on_close) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_loop_t* loop = uv_default_loop();

  int r;

  /* Setup */

  remove("watch_dir/file1");

  remove("watch_dir/");

  create_dir("watch_dir");

  create_file("watch_dir/file1");

  r = uv_fs_event_init(loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event,

                        fs_event_cb_file,

                        "watch_dir/file1",

                        0);

  ASSERT(r == 0);

  uv_close((uv_handle_t*)&fs_event, close_cb);

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(fs_event_cb_called == 0);

  ASSERT(close_cb_called == 1);

  /* Cleanup */

  remove("watch_dir/file1");

  remove("watch_dir/");

  MAKE_VALGRIND_HAPPY();

  return 0;

}

static void timer_cb(uv_timer_t* handle) {

  int r;

  r = uv_fs_event_init(handle->loop, &fs_event);

  ASSERT(r == 0);

  r = uv_fs_event_start(&fs_event, fs_event_fail, ".", 0);

  ASSERT(r == 0);

  uv_close((uv_handle_t*)&fs_event, close_cb);

  uv_close((uv_handle_t*)handle, close_cb);

}

TEST_IMPL(fs_event_immediate_close) {

#if defined(NO_FS_EVENTS)

  RETURN_SKIP(NO_FS_EVENTS);

#endif

  uv_timer_t timer;

  uv_loop_t* loop;

  int r;

  loop = uv_default_loop();

  r = uv_timer_init(loop, &timer;;

  ASSERT(r == 0);

  r = uv_timer_start(&timer, timer_cb, 1, 0);

  ASSERT(r == 0);