1 /* GIO testing utilities
3 * Copyright (C) 2008-2010 Red Hat, Inc.
4 * Copyright (C) 2012 Collabora Ltd. <http://www.collabora.co.uk/>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General
17 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 * Authors: David Zeuthen <davidz@redhat.com>
20 * Xavier Claessens <xavier.claessens@collabora.co.uk>
37 #include "gdbusconnection.h"
38 #include "gdbusprivate.h"
40 #include "gioenumtypes.h"
41 #include "gtestdbus.h"
49 /* -------------------------------------------------------------------------- */
50 /* Utility: Wait until object has a single ref */
59 on_weak_notify_timeout (gpointer user_data)
61 WeakNotifyData *data = user_data;
62 data->timed_out = TRUE;
63 g_main_loop_quit (data->loop);
68 dispose_on_idle (gpointer object)
70 g_object_run_dispose (object);
71 g_object_unref (object);
76 _g_object_dispose_and_wait_weak_notify (gpointer object)
81 data.loop = g_main_loop_new (NULL, FALSE);
82 data.timed_out = FALSE;
84 g_object_weak_ref (object, (GWeakNotify) g_main_loop_quit, data.loop);
86 /* Drop the ref in an idle callback, this is to make sure the mainloop
87 * is already running when weak notify happens */
88 g_idle_add (dispose_on_idle, object);
90 /* Make sure we don't block forever */
91 timeout_id = g_timeout_add (30 * 1000, on_weak_notify_timeout, &data);
93 g_main_loop_run (data.loop);
97 g_warning ("Weak notify timeout, object ref_count=%d\n",
98 G_OBJECT (object)->ref_count);
102 g_source_remove (timeout_id);
105 g_main_loop_unref (data.loop);
106 return data.timed_out;
109 /* -------------------------------------------------------------------------- */
110 /* Utilities to cleanup the mess in the case unit test process crash */
114 /* This could be interesting to expose in public API */
116 _g_test_watcher_add_pid (GPid pid)
118 static gsize started = 0;
121 if (g_once_init_enter (&started))
123 JOBOBJECT_EXTENDED_LIMIT_INFORMATION info;
125 job = CreateJobObjectW (NULL, NULL);
126 memset (&info, 0, sizeof (info));
127 info.BasicLimitInformation.LimitFlags = 0x2000 /* JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE */;
129 if (!SetInformationJobObject(job, JobObjectExtendedLimitInformation, &info, sizeof (info)))
130 g_warning ("Can't enable JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE: %s", g_win32_error_message (GetLastError()));
132 g_once_init_leave (&started,(gsize)job);
135 job = (HANDLE)started;
137 if (!AssignProcessToJobObject(job, pid))
138 g_warning ("Can't assign process to job: %s", g_win32_error_message (GetLastError()));
142 _g_test_watcher_remove_pid (GPid pid)
144 /* No need to unassign the process from the job object as the process
145 will be killed anyway */
150 #define ADD_PID_FORMAT "add pid %d\n"
151 #define REMOVE_PID_FORMAT "remove pid %d\n"
154 watch_parent (gint fd)
158 GArray *pids_to_kill;
160 channel = g_io_channel_unix_new (fd);
163 fds[0].events = G_IO_HUP | G_IO_IN;
166 pids_to_kill = g_array_new (FALSE, FALSE, sizeof (guint));
171 gchar *command = NULL;
174 GError *error = NULL;
176 num_events = g_poll (fds, 1, -1);
180 if (fds[0].revents == G_IO_HUP)
182 /* Parent quit, cleanup the mess and exit */
183 for (n = 0; n < pids_to_kill->len; n++)
185 pid = g_array_index (pids_to_kill, guint, n);
186 g_print ("cleaning up pid %d\n", pid);
190 g_array_unref (pids_to_kill);
191 g_io_channel_shutdown (channel, FALSE, &error);
192 g_assert_no_error (error);
193 g_io_channel_unref (channel);
198 /* Read the command from the input */
199 g_io_channel_read_line (channel, &command, NULL, NULL, &error);
200 g_assert_no_error (error);
202 /* Check for known commands */
203 if (sscanf (command, ADD_PID_FORMAT, &pid) == 1)
205 g_array_append_val (pids_to_kill, pid);
207 else if (sscanf (command, REMOVE_PID_FORMAT, &pid) == 1)
209 for (n = 0; n < pids_to_kill->len; n++)
211 if (g_array_index (pids_to_kill, guint, n) == pid)
213 g_array_remove_index (pids_to_kill, n);
220 g_warning ("unknown pid %d to remove", pid);
225 g_warning ("unknown command from parent '%s'", command);
236 static gsize started = 0;
237 static GIOChannel *channel = NULL;
239 if (g_once_init_enter (&started))
243 /* fork a child to clean up when we are killed */
244 if (pipe (pipe_fds) != 0)
246 g_warning ("pipe() failed: %m");
247 g_assert_not_reached ();
253 g_warning ("fork() failed: %m");
254 g_assert_not_reached ();
260 watch_parent (pipe_fds[0]);
266 channel = g_io_channel_unix_new (pipe_fds[1]);
269 g_once_init_leave (&started, 1);
276 watcher_send_command (const gchar *command)
279 GError *error = NULL;
281 channel = watcher_init ();
283 g_io_channel_write_chars (channel, command, -1, NULL, &error);
284 g_assert_no_error (error);
286 g_io_channel_flush (channel, &error);
287 g_assert_no_error (error);
290 /* This could be interesting to expose in public API */
292 _g_test_watcher_add_pid (GPid pid)
296 command = g_strdup_printf (ADD_PID_FORMAT, (guint) pid);
297 watcher_send_command (command);
302 _g_test_watcher_remove_pid (GPid pid)
306 command = g_strdup_printf (REMOVE_PID_FORMAT, (guint) pid);
307 watcher_send_command (command);
313 /* -------------------------------------------------------------------------- */
314 /* GTestDBus object implementation */
318 * @short_description: D-Bus testing helper
319 * @include: gio/gio.h
321 * A helper class for testing code which uses D-Bus without touching the user's
324 * Note that #GTestDBus modifies the user’s environment, calling setenv().
325 * This is not thread-safe, so all #GTestDBus calls should be completed before
326 * threads are spawned, or should have appropriate locking to ensure no access
327 * conflicts to environment variables shared between #GTestDBus and other
330 * ## Creating unit tests using GTestDBus
332 * Testing of D-Bus services can be tricky because normally we only ever run
333 * D-Bus services over an existing instance of the D-Bus daemon thus we
334 * usually don't activate D-Bus services that are not yet installed into the
335 * target system. The #GTestDBus object makes this easier for us by taking care
336 * of the lower level tasks such as running a private D-Bus daemon and looking
337 * up uninstalled services in customizable locations, typically in your source
340 * The first thing you will need is a separate service description file for the
341 * D-Bus daemon. Typically a <filename>services</filename> subdirectory of
342 * your <filename>tests</filename> directory is a good place to put this file.
344 * The service file should list your service along with an absolute path to the
345 * uninstalled service executable in your source tree. Using autotools we would
346 * achieve this by adding a file such as <filename>my-server.service.in</filename>
347 * in the services directory and have it processed by configure.
350 * Name=org.gtk.GDBus.Examples.ObjectManager
351 * Exec=@abs_top_builddir@/gio/tests/gdbus-example-objectmanager-server
353 * You will also need to indicate this service directory in your test
354 * fixtures, so you will need to pass the path while compiling your
355 * test cases. Typically this is done with autotools with an added
356 * preprocessor flag specified to compile your tests such as:
358 * -DTEST_SERVICES=\""$(abs_top_builddir)/tests/services"\"
360 * Once you have a service definition file which is local to your source tree,
361 * you can proceed to set up a GTest fixture using the #GTestDBus scaffolding.
363 * An example of a test fixture for D-Bus services can be found
364 * here: <ulink url="https://git.gnome.org/browse/glib/tree/gio/tests/gdbus-test-fixture.c">gdbus-test-fixture.c</ulink>
366 * Note that these examples only deal with isolating the D-Bus aspect of your
367 * service. To successfully run isolated unit tests on your service you may need
368 * some additional modifications to your test case fixture. For example; if your
369 * service uses GSettings and installs a schema then it is important that your test service
370 * not load the schema in the ordinary installed location (chances are that your service
371 * and schema files are not yet installed, or worse; there is an older version of the
372 * schema file sitting in the install location).
374 * Most of the time we can work around these obstacles using the
375 * environment. Since the environment is inherited by the D-Bus daemon
376 * created by #GTestDBus and then in turn inherited by any services the
377 * D-Bus daemon activates, using the setup routine for your fixture is
378 * a practical place to help sandbox your runtime environment. For the
379 * rather typical GSettings case we can work around this by setting
380 * `GSETTINGS_SCHEMA_DIR` to the in tree directory holding your schemas
381 * in the above fixture_setup() routine.
383 * The GSettings schemas need to be locally pre-compiled for this to work. This can be achieved
384 * by compiling the schemas locally as a step before running test cases, an autotools setup might
385 * do the following in the directory holding schemas:
388 * $(GLIB_COMPILE_SCHEMAS) .
390 * CLEANFILES += gschemas.compiled
394 typedef struct _GTestDBusClass GTestDBusClass;
395 typedef struct _GTestDBusPrivate GTestDBusPrivate;
400 * The #GTestDBus structure contains only private data and
401 * should only be accessed using the provided API.
408 GTestDBusPrivate *priv;
411 struct _GTestDBusClass {
412 GObjectClass parent_class;
415 struct _GTestDBusPrivate
417 GTestDBusFlags flags;
418 GPtrArray *service_dirs;
430 G_DEFINE_TYPE_WITH_PRIVATE (GTestDBus, g_test_dbus, G_TYPE_OBJECT)
433 g_test_dbus_init (GTestDBus *self)
435 self->priv = g_test_dbus_get_instance_private (self);
436 self->priv->service_dirs = g_ptr_array_new_with_free_func (g_free);
440 g_test_dbus_dispose (GObject *object)
442 GTestDBus *self = (GTestDBus *) object;
445 g_test_dbus_down (self);
447 G_OBJECT_CLASS (g_test_dbus_parent_class)->dispose (object);
451 g_test_dbus_finalize (GObject *object)
453 GTestDBus *self = (GTestDBus *) object;
455 g_ptr_array_unref (self->priv->service_dirs);
456 g_free (self->priv->bus_address);
458 G_OBJECT_CLASS (g_test_dbus_parent_class)->finalize (object);
462 g_test_dbus_get_property (GObject *object,
467 GTestDBus *self = (GTestDBus *) object;
472 g_value_set_flags (value, g_test_dbus_get_flags (self));
475 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
481 g_test_dbus_set_property (GObject *object,
486 GTestDBus *self = (GTestDBus *) object;
491 self->priv->flags = g_value_get_flags (value);
494 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
500 g_test_dbus_class_init (GTestDBusClass *klass)
502 GObjectClass *object_class = G_OBJECT_CLASS (klass);
504 object_class->dispose = g_test_dbus_dispose;
505 object_class->finalize = g_test_dbus_finalize;
506 object_class->get_property = g_test_dbus_get_property;
507 object_class->set_property = g_test_dbus_set_property;
512 * #GTestDBusFlags specifying the behaviour of the D-Bus session.
516 g_object_class_install_property (object_class, PROP_FLAGS,
517 g_param_spec_flags ("flags",
518 P_("D-Bus session flags"),
519 P_("Flags specifying the behaviour of the D-Bus session"),
520 G_TYPE_TEST_DBUS_FLAGS, G_TEST_DBUS_NONE,
521 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
522 G_PARAM_STATIC_STRINGS));
527 write_config_file (GTestDBus *self)
532 GError *error = NULL;
535 fd = g_file_open_tmp ("g-test-dbus-XXXXXX", &path, &error);
536 g_assert_no_error (error);
538 contents = g_string_new (NULL);
539 g_string_append (contents,
541 " <type>session</type>\n"
543 " <listen>nonce-tcp:</listen>\n"
545 " <listen>unix:tmpdir=/tmp</listen>\n"
549 for (i = 0; i < self->priv->service_dirs->len; i++)
551 const gchar *dir_path = g_ptr_array_index (self->priv->service_dirs, i);
553 g_string_append_printf (contents,
554 " <servicedir>%s</servicedir>\n", dir_path);
557 g_string_append (contents,
558 " <policy context=\"default\">\n"
559 " <!-- Allow everything to be sent -->\n"
560 " <allow send_destination=\"*\" eavesdrop=\"true\"/>\n"
561 " <!-- Allow everything to be received -->\n"
562 " <allow eavesdrop=\"true\"/>\n"
563 " <!-- Allow anyone to own anything -->\n"
564 " <allow own=\"*\"/>\n"
568 g_file_set_contents (path, contents->str, contents->len, &error);
569 g_assert_no_error (error);
571 g_string_free (contents, TRUE);
579 start_daemon (GTestDBus *self)
581 const gchar *argv[] = {"dbus-daemon", "--print-address", "--config-file=foo", NULL};
587 GError *error = NULL;
589 if (g_getenv ("G_TEST_DBUS_DAEMON") != NULL)
590 argv[0] = (gchar *)g_getenv ("G_TEST_DBUS_DAEMON");
592 /* Write config file and set its path in argv */
593 config_path = write_config_file (self);
594 config_arg = g_strdup_printf ("--config-file=%s", config_path);
595 argv[2] = config_arg;
597 /* Spawn dbus-daemon */
598 g_spawn_async_with_pipes (NULL,
602 /* We Need this to get the pid returned on win32 */
603 G_SPAWN_DO_NOT_REAP_CHILD |
608 &self->priv->bus_pid,
613 g_assert_no_error (error);
615 _g_test_watcher_add_pid (self->priv->bus_pid);
617 /* Read bus address from daemon' stdout */
618 channel = g_io_channel_unix_new (stdout_fd);
619 g_io_channel_read_line (channel, &self->priv->bus_address, NULL,
621 g_assert_no_error (error);
622 self->priv->bus_address[termpos] = '\0';
624 /* start dbus-monitor */
625 if (g_getenv ("G_DBUS_MONITOR") != NULL)
629 command = g_strdup_printf ("dbus-monitor --address %s",
630 self->priv->bus_address);
631 g_spawn_command_line_async (command, NULL);
634 g_usleep (500 * 1000);
638 g_io_channel_shutdown (channel, FALSE, &error);
639 g_assert_no_error (error);
640 g_io_channel_unref (channel);
642 /* Don't use g_file_delete since it calls into gvfs */
643 if (g_unlink (config_path) != 0)
644 g_assert_not_reached ();
646 g_free (config_path);
651 stop_daemon (GTestDBus *self)
654 if (!TerminateProcess (self->priv->bus_pid, 0))
655 g_warning ("Can't terminate process: %s", g_win32_error_message (GetLastError()));
657 kill (self->priv->bus_pid, SIGTERM);
659 _g_test_watcher_remove_pid (self->priv->bus_pid);
660 g_spawn_close_pid (self->priv->bus_pid);
661 self->priv->bus_pid = 0;
663 g_free (self->priv->bus_address);
664 self->priv->bus_address = NULL;
669 * @flags: a #GTestDBusFlags
671 * Create a new #GTestDBus object.
673 * Returns: (transfer full): a new #GTestDBus.
676 g_test_dbus_new (GTestDBusFlags flags)
678 return g_object_new (G_TYPE_TEST_DBUS,
684 * g_test_dbus_get_flags:
685 * @self: a #GTestDBus
687 * Get the flags of the #GTestDBus object.
689 * Returns: the value of #GTestDBus:flags property
692 g_test_dbus_get_flags (GTestDBus *self)
694 g_return_val_if_fail (G_IS_TEST_DBUS (self), G_TEST_DBUS_NONE);
696 return self->priv->flags;
700 * g_test_dbus_get_bus_address:
701 * @self: a #GTestDBus
703 * Get the address on which dbus-daemon is running. If g_test_dbus_up() has not
704 * been called yet, %NULL is returned. This can be used with
705 * g_dbus_connection_new_for_address().
707 * Returns: (allow-none): the address of the bus, or %NULL.
710 g_test_dbus_get_bus_address (GTestDBus *self)
712 g_return_val_if_fail (G_IS_TEST_DBUS (self), NULL);
714 return self->priv->bus_address;
718 * g_test_dbus_add_service_dir:
719 * @self: a #GTestDBus
720 * @path: path to a directory containing .service files
722 * Add a path where dbus-daemon will look up .service files. This can't be
723 * called after g_test_dbus_up().
726 g_test_dbus_add_service_dir (GTestDBus *self,
729 g_return_if_fail (G_IS_TEST_DBUS (self));
730 g_return_if_fail (self->priv->bus_address == NULL);
732 g_ptr_array_add (self->priv->service_dirs, g_strdup (path));
737 * @self: a #GTestDBus
739 * Start a dbus-daemon instance and set DBUS_SESSION_BUS_ADDRESS. After this
740 * call, it is safe for unit tests to start sending messages on the session bus.
742 * If this function is called from setup callback of g_test_add(),
743 * g_test_dbus_down() must be called in its teardown callback.
745 * If this function is called from unit test's main(), then g_test_dbus_down()
746 * must be called after g_test_run().
749 g_test_dbus_up (GTestDBus *self)
751 g_return_if_fail (G_IS_TEST_DBUS (self));
752 g_return_if_fail (self->priv->bus_address == NULL);
753 g_return_if_fail (!self->priv->up);
757 g_test_dbus_unset ();
758 g_setenv ("DBUS_SESSION_BUS_ADDRESS", self->priv->bus_address, TRUE);
759 self->priv->up = TRUE;
765 * @self: a #GTestDBus
767 * Stop the session bus started by g_test_dbus_up().
769 * Unlike g_test_dbus_down(), this won't verify the #GDBusConnection
770 * singleton returned by g_bus_get() or g_bus_get_sync() is destroyed. Unit
771 * tests wanting to verify behaviour after the session bus has been stopped
772 * can use this function but should still call g_test_dbus_down() when done.
775 g_test_dbus_stop (GTestDBus *self)
777 g_return_if_fail (G_IS_TEST_DBUS (self));
778 g_return_if_fail (self->priv->bus_address != NULL);
785 * @self: a #GTestDBus
787 * Stop the session bus started by g_test_dbus_up().
789 * This will wait for the singleton returned by g_bus_get() or g_bus_get_sync()
790 * is destroyed. This is done to ensure that the next unit test won't get a
791 * leaked singleton from this test.
794 g_test_dbus_down (GTestDBus *self)
796 GDBusConnection *connection;
798 g_return_if_fail (G_IS_TEST_DBUS (self));
799 g_return_if_fail (self->priv->up);
801 connection = _g_bus_get_singleton_if_exists (G_BUS_TYPE_SESSION);
802 if (connection != NULL)
803 g_dbus_connection_set_exit_on_close (connection, FALSE);
805 if (self->priv->bus_address != NULL)
808 if (connection != NULL)
809 _g_object_dispose_and_wait_weak_notify (connection);
811 g_test_dbus_unset ();
812 self->priv->up = FALSE;
818 * Unset DISPLAY and DBUS_SESSION_BUS_ADDRESS env variables to ensure the test
819 * won't use user's session bus.
821 * This is useful for unit tests that want to verify behaviour when no session
822 * bus is running. It is not necessary to call this if unit test already calls
823 * g_test_dbus_up() before acquiring the session bus.
826 g_test_dbus_unset (void)
828 g_unsetenv ("DISPLAY");
829 g_unsetenv ("DBUS_SESSION_BUS_ADDRESS");
830 g_unsetenv ("DBUS_STARTER_ADDRESS");
831 g_unsetenv ("DBUS_STARTER_BUS_TYPE");