tests: shell: add tests for "device list"

Add tests for the "device list" output with the various configuration of
device power management.

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

tests/subsys/shell/shell_device/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(shell_device)
+
+target_sources(app PRIVATE src/main.c)

tests/subsys/shell/shell_device/prj.conf

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_SHELL=y
+CONFIG_SHELL_BACKEND_SERIAL=n
+CONFIG_SHELL_BACKEND_DUMMY=y

tests/subsys/shell/shell_device/src/main.c

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include <zephyr/device.h>
+#include <zephyr/pm/device.h>
+#include <zephyr/pm/device_runtime.h>
+#include <zephyr/shell/shell.h>
+#include <zephyr/shell/shell_dummy.h>
+
+#ifdef CONFIG_PM_DEVICE
+static int dummy_device_pm_action(const struct device *dev,
+				  enum pm_device_action action)
+{
+	return 0;
+}
+
+PM_DEVICE_DEFINE(dummy_pm_driver_1, dummy_device_pm_action);
+PM_DEVICE_DEFINE(dummy_pm_driver_2, dummy_device_pm_action);
+PM_DEVICE_DEFINE(dummy_pm_driver_3, dummy_device_pm_action);
+PM_DEVICE_DEFINE(dummy_pm_driver_4, dummy_device_pm_action);
+#endif
+
+DEVICE_DEFINE(device_0, "device@0", NULL, NULL,
+	      NULL, NULL,
+	      POST_KERNEL, 0, NULL);
+
+DEVICE_DEFINE(device_1, "device@1", NULL, PM_DEVICE_GET(dummy_pm_driver_1),
+	      NULL, NULL,
+	      POST_KERNEL, 1, NULL);
+
+DEVICE_DEFINE(device_2, "device@2", NULL, PM_DEVICE_GET(dummy_pm_driver_2),
+	      NULL, NULL,
+	      POST_KERNEL, 2, NULL);
+
+DEVICE_DEFINE(device_3, "device@3", NULL, PM_DEVICE_GET(dummy_pm_driver_3),
+	      NULL, NULL,
+	      POST_KERNEL, 3, NULL);
+
+DEVICE_DEFINE(device_4, "device@4", NULL, PM_DEVICE_GET(dummy_pm_driver_4),
+	      NULL, NULL,
+	      POST_KERNEL, 4, NULL);
+
+#ifdef CONFIG_PM_DEVICE
+static const struct device *d2 = &DEVICE_NAME_GET(device_2);
+#endif
+static const struct device *d3 = &DEVICE_NAME_GET(device_3);
+static const struct device *d4 = &DEVICE_NAME_GET(device_4);
+
+int main(void)
+{
+	const struct shell *sh = shell_backend_dummy_get_ptr();
+	const char *buf;
+	int err;
+	size_t size;
+
+	/* Let the shell backend initialize. */
+	k_usleep(10);
+
+#ifdef CONFIG_PM_DEVICE
+	pm_device_action_run(d2, PM_DEVICE_ACTION_SUSPEND);
+#endif
+
+	pm_device_runtime_enable(d3);
+	pm_device_runtime_enable(d4);
+	pm_device_runtime_get(d4);
+
+	shell_backend_dummy_clear_output(sh);
+
+	err = shell_execute_cmd(sh, "device list");
+	if (err) {
+		printf("Failed to execute the shell command: %d.\n",
+		       err);
+	}
+
+	buf = shell_backend_dummy_get_output(sh, &size);
+	printf("%s\n", buf);
+
+	return 0;
+}

tests/subsys/shell/shell_device/testcase.yaml

@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: Apache-2.0
+
+common:
+  tags: shell
+  platform_allow:
+    - native_sim
+  integration_platforms:
+    - native_sim
+
+tests:
+  shell.device:
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "device@0 \\(READY\\)"
+        - "device@1 \\(READY\\)"
+        - "device@2 \\(READY\\)"
+        - "device@3 \\(READY\\)"
+        - "device@4 \\(READY\\)"
+  shell.device_pm_device:
+    extra_configs:
+      - CONFIG_PM_DEVICE=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "device@0 \\(READY\\)"
+        - "device@1 \\(active\\)"
+        - "device@2 \\(suspended\\)"
+        - "device@3 \\(active\\)"
+        - "device@4 \\(active\\)"
+  shell.device_pm_device_runtime:
+    extra_configs:
+      - CONFIG_PM_DEVICE=y
+      - CONFIG_PM_DEVICE_RUNTIME=y
+    harness: console
+    harness_config:
+      type: multi_line
+      regex:
+        - "device@0 \\(READY\\)"
+        - "device@1 \\(active\\)"
+        - "device@2 \\(suspended\\)"
+        - "device@3 \\(suspended, usage=0\\)"
+        - "device@4 \\(active, usage=1\\)"