test: Add test case for spawning detached child processes.

test/test-list.h

@@ -104,6 +104,7 @@ TEST_DECLARE   (spawn_exit_code)
 TEST_DECLARE   (spawn_stdout)
 TEST_DECLARE   (spawn_stdin)
 TEST_DECLARE   (spawn_and_kill)
+TEST_DECLARE   (spawn_detached)
 TEST_DECLARE   (spawn_and_kill_with_std)
 TEST_DECLARE   (spawn_and_ping)
 TEST_DECLARE   (kill)
@@ -279,6 +280,7 @@ TASK_LIST_START
   TEST_ENTRY  (spawn_stdout)
   TEST_ENTRY  (spawn_stdin)
   TEST_ENTRY  (spawn_and_kill)
+  TEST_ENTRY  (spawn_detached)
   TEST_ENTRY  (spawn_and_kill_with_std)
   TEST_ENTRY  (spawn_and_ping)
   TEST_ENTRY  (kill)

test/test-spawn.c

@@ -77,6 +77,22 @@ static void kill_cb(uv_process_t* process, int exit_status, int term_signal) {
   ASSERT(err.code == UV_ESRCH);
 }
 
+static void detach_cb(uv_process_t* process, int exit_status, int term_signal) {
+  uv_err_t err;
+  printf("detach_cb\n");
+  exit_cb_called++;
+  ASSERT(exit_status == 0);
+  uv_close((uv_handle_t*)process, close_cb);
+
+  /*
+   * Unlike other tests, this one needs to make sure the process *is*
+   * still alive.
+   */
+  err = uv_kill(process->pid, 0);
+  ASSERT(err.code == 0);
+  err = uv_kill(process->pid, 15);
+  ASSERT(err.code == 0);
+}
 
 static uv_buf_t on_alloc(uv_handle_t* handle, size_t suggested_size) {
   uv_buf_t buf;
@@ -230,6 +246,24 @@ TEST_IMPL(spawn_and_kill) {
   return 0;
 }
 
+TEST_IMPL(spawn_detached) {
+  int r;
+
+  init_process_options("spawn_helper4", detach_cb);
+
+  options.detached = 1;
+
+  r = uv_spawn(uv_default_loop(), &process, options);
+  ASSERT(r == 0);
+
+  r = uv_run(uv_default_loop());
+  ASSERT(r == 0);
+
+  ASSERT(exit_cb_called == 1);
+  ASSERT(close_cb_called == 1);
+
+  return 0;
+}
 
 TEST_IMPL(spawn_and_kill_with_std) {
   int r;