tests: add test for the input subsystem

It should:
- Capture your keypresses
- Announce when a device is added or removed (with --enable-debug)
- stop/start capturing on SIGQUIT (Ctrl-\)

Signed-off-by: Ran Benita <ran234@gmail.com>
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

Makefile.am

@@ -1,7 +1,8 @@
 ACLOCAL_AMFLAGS = -I m4
 
 bin_PROGRAMS = kmscon
-check_PROGRAMS = test_console test_output test_vt test_buffer test_terminal
+check_PROGRAMS = test_console test_output test_vt test_buffer test_terminal \
+	test_input
 noinst_LTLIBRARIES = libkmscon-core.la
 
 AM_CFLAGS = \
@@ -76,4 +77,7 @@ test_buffer_LDADD = libkmscon-core.la
 test_terminal_SOURCES = tests/test_terminal.c
 test_terminal_LDADD = libkmscon-core.la
 
+test_input_SOURCES = tests/test_input.c
+test_input_LDADD = libkmscon-core.la
+
 dist_doc_DATA = README TODO

tests/test_input.c

@@ -0,0 +1,127 @@
+/*
+ * test_input - Test the input system - hotplug and keypresses
+ *
+ * Copyright (c) 2011 Ran Benita <ran234@gmail.com>
+ *
+ * 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 <errno.h>
+#include <linux/input.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "eloop.h"
+#include "input.h"
+#include "log.h"
+
+static bool terminate;
+
+static void sig_term(struct kmscon_signal *sig, int signum, void *data)
+{
+	terminate = true;
+}
+
+/* Pressing Ctrl-\ should toggle the capturing. */
+static void sig_quit(struct kmscon_signal *sig, int signum, void *data)
+{
+	struct kmscon_input *input = data;
+
+	if (kmscon_input_is_asleep(input)) {
+		kmscon_input_wake_up(input);
+		log_info("Woke Up\n");
+	} else {
+		kmscon_input_sleep(input);
+		log_info("Went to sleep\n");
+	}
+}
+
+static void input_arrived(struct kmscon_input *input, uint16_t type,
+				uint16_t code, int32_t value, void *data)
+{
+	printf("got (type %x) (code %x) (value %x)\n", type, code, value);
+}
+
+int main(int argc, char **argv)
+{
+	int ret;
+	struct kmscon_eloop *loop;
+	struct kmscon_input *input;
+	struct kmscon_signal *sigint, *sigquit;
+
+	ret = kmscon_eloop_new(&loop);
+	if (ret) {
+		log_err("Cannot create eloop\n");
+		goto err_out;
+	}
+
+	ret = kmscon_input_new(&input);
+	if (ret) {
+		log_err("Cannot create input\n");
+		goto err_loop;
+	}
+
+	ret = kmscon_eloop_new_signal(loop, &sigint, SIGINT, sig_term, NULL);
+	if (ret) {
+		log_err("Cannot add INT signal\n");
+		goto err_input;
+	}
+
+	ret = kmscon_eloop_new_signal(loop, &sigquit, SIGQUIT, sig_quit, input);
+	if (ret) {
+		log_err("Cannot add quit signal\n");
+		goto err_sigint;
+	}
+
+	ret = kmscon_input_connect_eloop(input, loop, input_arrived, NULL);
+	if (ret) {
+		log_err("Cannot connect input\n");
+		goto err_sigquit;
+	}
+
+	kmscon_input_wake_up(input);
+
+	system("stty -echo");
+
+	while (!terminate) {
+		ret = kmscon_eloop_dispatch(loop, -1);
+		if (ret) {
+			log_err("Dispatcher failed\n");
+			break;
+		}
+	}
+
+	system("stty echo");
+
+err_sigquit:
+	kmscon_eloop_rm_signal(sigquit);
+err_sigint:
+	kmscon_eloop_rm_signal(sigint);
+err_input:
+	kmscon_input_unref(input);
+err_loop:
+	kmscon_eloop_unref(loop);
+err_out:
+	return abs(ret);
+}