/* GLib testing framework examples and tests
 *
 * Copyright (C) 2008-2010 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General
 * Public License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: David Zeuthen <davidz@redhat.com>
 */

#include <gio/gio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "gdbus-tests.h"

/* all tests rely on a shared mainloop */
static GMainLoop *loop = NULL;

/* ---------------------------------------------------------------------------------------------------- */

typedef struct {
    const gchar *name;
    const gchar *bug;
    enum {
        EXPLICITLY_FALSE = FALSE,
        EXPLICITLY_TRUE = TRUE,
        IMPLICITLY_TRUE
    } exit_on_close;
    enum {
        LOCAL,
        REMOTE
    } who_closes;
} TestData;

static const TestData cases[] = {
      { "default",  NULL,     IMPLICITLY_TRUE,  REMOTE },
      { "true",     NULL,     EXPLICITLY_TRUE,  REMOTE },
      { "false",    NULL,     EXPLICITLY_FALSE, REMOTE },
      { "we-close", "662100", EXPLICITLY_TRUE,  LOCAL  },
      { NULL }
};

static gboolean
quit_later_cb (gpointer data G_GNUC_UNUSED)
{
  g_main_loop_quit (loop);

  return FALSE;
}

#define VANISHED_PATTERN "*Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.*"

static void
closed_cb (GDBusConnection  *c G_GNUC_UNUSED,
           gboolean          remote_peer_vanished,
           GError           *error,
           gpointer          test_data)
{
  const TestData *td = test_data;

  g_assert_cmpint (remote_peer_vanished, ==, (td->who_closes == REMOTE));
  g_assert_cmpint ((error == NULL), ==, (td->who_closes == LOCAL));

  /* we delay this so that if exit-on-close was going to happen, it will
   * win the race
   */
  g_timeout_add (50, quit_later_cb, NULL);
}

static void
close_async_cb (GObject *source G_GNUC_UNUSED,
                GAsyncResult *res G_GNUC_UNUSED,
                gpointer nil G_GNUC_UNUSED)
{
}

static void
test_exit_on_close (gconstpointer test_data)
{
  const TestData *td = test_data;

  /* all the tests rely on a shared main loop */
  loop = g_main_loop_new (NULL, FALSE);

  /* all the tests use a session bus with a well-known address that we can bring up and down
   * using session_bus_up() and session_bus_down().
   */
  g_unsetenv ("DISPLAY");
  g_setenv ("DBUS_SESSION_BUS_ADDRESS", session_bus_get_temporary_address (), TRUE);

  if (g_test_trap_fork (0, G_TEST_TRAP_SILENCE_STDOUT | G_TEST_TRAP_SILENCE_STDERR))
    {
      GDBusConnection *c;

      session_bus_up ();
      c = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);

      g_assert (c != NULL);

      /* the default is meant to be TRUE */
      if (td->exit_on_close != IMPLICITLY_TRUE)
        g_dbus_connection_set_exit_on_close (c, td->exit_on_close);

      g_assert_cmpint (g_dbus_connection_get_exit_on_close (c), ==,
                       (td->exit_on_close != EXPLICITLY_FALSE));
      g_assert (!g_dbus_connection_is_closed (c));

      g_timeout_add (50, quit_later_cb, NULL);
      g_main_loop_run (loop);

      g_signal_connect (c, "closed", G_CALLBACK (closed_cb), (gpointer) td);

      if (td->who_closes == LOCAL)
        {
          GVariant *v;
          GError *error = NULL;

          v = g_dbus_connection_call_sync (c, "org.freedesktop.DBus",
                                           "/org/freedesktop/DBus",
                                           "org.freedesktop.DBus",
                                           "ListNames",
                                           NULL,
                                           G_VARIANT_TYPE ("(as)"),
                                           G_DBUS_CALL_FLAGS_NONE,
                                           -1,
                                           NULL,
                                           &error);
          g_assert_no_error (error);
          g_assert (v != NULL);

          g_dbus_connection_close (c, NULL, close_async_cb, NULL);
        }
      else
        {
          session_bus_down ();
        }

      g_main_loop_run (loop);
      /* this is only reached when we turn off exit-on-close */
      g_main_loop_unref (loop);
      exit (0);
    }

  if (td->exit_on_close == EXPLICITLY_FALSE ||
      td->who_closes == LOCAL)
    {
      g_test_trap_assert_stdout_unmatched (VANISHED_PATTERN);
      g_test_trap_assert_passed ();
    }
  else
    {
      g_test_trap_assert_stdout (VANISHED_PATTERN);
      g_test_trap_assert_failed();
    }
}

/* ---------------------------------------------------------------------------------------------------- */

int
main (int   argc,
      char *argv[])
{
  gint i;

  g_type_init ();
  g_test_init (&argc, &argv, NULL);

  for (i = 0; cases[i].name != NULL; i++)
    {
      gchar *name = g_strdup_printf ("/gdbus/exit-on-close/%s", cases[i].name);

      g_test_add_data_func (name, &cases[i], test_exit_on_close);
      g_free (name);
    }

  return g_test_run();
}
