tests: input_shell: add an input shell test

Add a test to validate the input shell command and event dump output.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>

tests/subsys/input/input_shell/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(input_shell)
+
+target_sources(app PRIVATE src/main.c)

tests/subsys/input/input_shell/prj.conf

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_LOG=y
+CONFIG_LOG_MODE_MINIMAL=y
+CONFIG_SHELL=y
+CONFIG_SHELL_BACKEND_SERIAL=n
+CONFIG_SHELL_BACKEND_DUMMY=y
+
+CONFIG_INPUT=y
+CONFIG_INPUT_EVENT_DUMP=y
+CONFIG_INPUT_SHELL=y

tests/subsys/input/input_shell/src/main.c

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include <zephyr/shell/shell.h>
+#include <zephyr/shell/shell_dummy.h>
+
+#define SLEEP_TIME_MS 200
+#define CMD_BUF_LEN 128
+
+int main(void)
+{
+	const struct shell *sh = shell_backend_dummy_get_ptr();
+	bool val = false;
+	int err;
+	char buf[CMD_BUF_LEN];
+
+	err = shell_execute_cmd(sh, "input dump on");
+	if (err) {
+		printf("Failed to execute the shell command: %d.\n",
+		       err);
+	}
+
+	while (true) {
+		snprintf(buf, 128, "input report 1 2 %d", val);
+		err = shell_execute_cmd(sh, buf);
+		if (err) {
+			printf("Failed to execute the shell command: %d.\n",
+			       err);
+		}
+
+		val = !val;
+
+		k_msleep(SLEEP_TIME_MS);
+	}
+
+	return 0;
+}

tests/subsys/input/input_shell/testcase.yaml

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: Apache-2.0
+
+tests:
+  input.input_shell:
+    tags: input
+    platform_allow:
+      - native_posix
+      - native_posix_64
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "I: input event: dev=NULL             SYN type= 1 code=  2 value=0"
+        - "I: input event: dev=NULL             SYN type= 1 code=  2 value=1"