test: add a couple of tests for the udev-seat backend

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

test/Makefile.am

@@ -14,12 +14,17 @@ liblitest_la_SOURCES = \
 	litest-trackpoint.c \
 	litest.c
 
-run_tests =
+run_tests = test-udev
 build_tests = test-build-linker test-build-pedantic-c99 test-build-std-gnuc90
 
 noinst_PROGRAMS = $(build_tests) $(run_tests)
 TESTS = $(run_tests)
 
+test_udev_SOURCES = udev.c
+test_udev_CFLAGS = $(AM_CPPFLAGS)
+test_udev_LDADD = $(TEST_LIBS)
+test_udev_LDFLAGS = -static
+
 # build-test only
 test_build_pedantic_c99_SOURCES = build-pedantic.c
 test_build_pedantic_c99_CFLAGS = $(AM_CPPFLAGS) -std=c99 -pedantic -Werror

test/udev.c

@@ -0,0 +1,274 @@
+/*
+ * Copyright © 2013 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <check.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libinput.h>
+#include <libudev.h>
+#include <unistd.h>
+
+#include "litest.h"
+
+static int open_restricted(const char *path, int flags, void *data)
+{
+	int fd;
+	fd = open(path, flags);
+	return fd < 0 ? -errno : fd;
+}
+static void close_restricted(int fd, void *data)
+{
+	close(fd);
+}
+
+const struct libinput_interface simple_interface = {
+	.open_restricted = open_restricted,
+	.close_restricted = close_restricted,
+};
+
+
+START_TEST(udev_create_NULL)
+{
+	struct libinput *li;
+	const struct libinput_interface interface;
+	struct udev *udev = (struct udev*)0xdeadbeef;
+	const char *seat = (const char*)0xdeaddead;
+
+	li = libinput_create_from_udev(NULL, NULL, NULL, NULL);
+	ck_assert(li == NULL);
+
+	li = libinput_create_from_udev(&interface, NULL, NULL, NULL);
+	ck_assert(li == NULL);
+	li = libinput_create_from_udev(NULL, NULL, udev, NULL);
+	ck_assert(li == NULL);
+	li = libinput_create_from_udev(NULL, NULL, NULL, seat);
+	ck_assert(li == NULL);
+
+	li = libinput_create_from_udev(&interface, NULL, udev, NULL);
+	ck_assert(li == NULL);
+	li = libinput_create_from_udev(NULL, NULL, udev, seat);
+	ck_assert(li == NULL);
+
+	li = libinput_create_from_udev(&interface, NULL, NULL, seat);
+	ck_assert(li == NULL);
+}
+END_TEST
+
+START_TEST(udev_create_seat0)
+{
+	struct libinput *li;
+	struct libinput_event *event;
+	struct udev *udev;
+	int fd;
+
+	udev = udev_new();
+	ck_assert(udev != NULL);
+
+	li = libinput_create_from_udev(&simple_interface, NULL, udev, "seat0");
+	ck_assert(li != NULL);
+
+	fd = libinput_get_fd(li);
+	ck_assert_int_ge(fd, 0);
+
+	/* expect at least one event */
+	libinput_dispatch(li);
+	event = libinput_get_event(li);
+	ck_assert(event != NULL);
+
+	libinput_event_destroy(event);
+	libinput_destroy(li);
+	udev_unref(udev);
+}
+END_TEST
+
+START_TEST(udev_create_empty_seat)
+{
+	struct libinput *li;
+	struct libinput_event *event;
+	struct udev *udev;
+	int fd;
+
+	udev = udev_new();
+	ck_assert(udev != NULL);
+
+	/* expect a libinput reference, but no events */
+	li = libinput_create_from_udev(&simple_interface, NULL, udev, "seatdoesntexist");
+	ck_assert(li != NULL);
+
+	fd = libinput_get_fd(li);
+	ck_assert_int_ge(fd, 0);
+
+	libinput_dispatch(li);
+	event = libinput_get_event(li);
+	ck_assert(event == NULL);
+
+	libinput_event_destroy(event);
+	libinput_destroy(li);
+	udev_unref(udev);
+}
+END_TEST
+
+/**
+ * This test only works if there's at least one device in the system that is
+ * assigned the default seat. Should cover the 99% case.
+ */
+START_TEST(udev_added_seat_default)
+{
+	struct libinput *li;
+	struct libinput_event *event;
+	struct udev *udev;
+	struct libinput_event_added_seat *seat_event;
+	struct libinput_seat *seat;
+	const char *seat_name;
+	enum libinput_event_type type;
+	int default_seat_found = 0;
+
+	udev = udev_new();
+	ck_assert(udev != NULL);
+
+	li = libinput_create_from_udev(&simple_interface, NULL, udev, "seat0");
+	ck_assert(li != NULL);
+	libinput_dispatch(li);
+
+	while (!default_seat_found && (event = libinput_get_event(li))) {
+		type = libinput_event_get_type(event);
+		if (type != LIBINPUT_EVENT_ADDED_SEAT) {
+			libinput_event_destroy(event);
+			continue;
+		}
+
+		seat_event = (struct libinput_event_added_seat*)event;
+		seat = libinput_event_added_seat_get_seat(seat_event);
+		ck_assert(seat != NULL);
+
+		seat_name = libinput_seat_get_name(seat);
+		default_seat_found = !strcmp(seat_name, "default");
+		libinput_event_destroy(event);
+	}
+
+	ck_assert(default_seat_found);
+
+	libinput_destroy(li);
+	udev_unref(udev);
+}
+END_TEST
+
+START_TEST(udev_removed_seat)
+{
+	struct libinput *li;
+	struct libinput_event *event;
+	struct udev *udev;
+#define MAX_SEATS 30
+	char *seat_names[MAX_SEATS] = {0};
+	int idx = 0;
+
+	udev = udev_new();
+	ck_assert(udev != NULL);
+
+	li = libinput_create_from_udev(&simple_interface, NULL, udev, "seat0");
+	ck_assert(li != NULL);
+	libinput_dispatch(li);
+
+	while ((event = libinput_get_event(li))) {
+		enum libinput_event_type type;
+		struct libinput_event_added_seat *seat_event;
+		struct libinput_seat *seat;
+		const char *seat_name;
+
+		type = libinput_event_get_type(event);
+		if (type != LIBINPUT_EVENT_ADDED_SEAT) {
+			libinput_event_destroy(event);
+			continue;
+		}
+
+		seat_event = (struct libinput_event_added_seat*)event;
+		seat = libinput_event_added_seat_get_seat(seat_event);
+		ck_assert(seat != NULL);
+
+		seat_name = libinput_seat_get_name(seat);
+		seat_names[idx++] = strdup(seat_name);
+		ck_assert_int_lt(idx, MAX_SEATS);
+
+		libinput_event_destroy(event);
+	}
+
+	libinput_suspend(li);
+
+	while ((event = libinput_get_event(li))) {
+		enum libinput_event_type type;
+		struct libinput_event_removed_seat *seat_event;
+		struct libinput_seat *seat;
+		const char *seat_name;
+		int i;
+
+		type = libinput_event_get_type(event);
+		if (type != LIBINPUT_EVENT_REMOVED_SEAT) {
+			libinput_event_destroy(event);
+			continue;
+		}
+
+		seat_event = (struct libinput_event_removed_seat*)event;
+		seat = libinput_event_removed_seat_get_seat(seat_event);
+		ck_assert(seat != NULL);
+
+		seat_name = libinput_seat_get_name(seat);
+
+		for (i = 0; i < idx; i++) {
+			if (seat_names[i] &&
+			    strcmp(seat_names[i], seat_name) == 0) {
+				free(seat_names[i]);
+				seat_names[i] = NULL;
+				break;
+			}
+		}
+		ck_assert_msg(i < idx,
+			      "Seat '%s' unknown or already removed\n",
+			      seat_name);
+
+		libinput_event_destroy(event);
+	}
+
+	while(idx--) {
+		ck_assert_msg(seat_names[idx] == NULL,
+			      "Seat '%s' not removed\n",
+			      seat_names[idx]);
+	}
+
+	libinput_destroy(li);
+	udev_unref(udev);
+#undef MAX_SEATS
+}
+END_TEST
+
+int main (int argc, char **argv) {
+
+	litest_add_no_device("udev:create", udev_create_NULL);
+	litest_add_no_device("udev:create", udev_create_seat0);
+	litest_add_no_device("udev:create", udev_create_empty_seat);
+
+	litest_add_no_device("udev:seat events", udev_added_seat_default);
+	litest_add_no_device("udev:seat events", udev_removed_seat);
+
+	return litest_run(argc, argv);
+}