pseq: Create GPIO class hierarchy
Create GPIO class hierarchy within the phosphor-power-sequencer
application.
The GPIO abstract base class declares virtual methods for requesting,
reading, writing, and releasing a GPIO.
The BMCGPIO subclass provides a real implementation using the libgpiod
API.
The MockGPIO subclass provides a mock implementation for automated
testing.
Tested:
* Verified GPIO could be read
* Verified GPIO could be written
* Verified error paths
* Verified MockGPIO could be used in an automated test
Change-Id: Ie5808988c5d743c44735f5bc4c09cd15b397518b
Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
diff --git a/phosphor-power-sequencer/test/mock_gpio.hpp b/phosphor-power-sequencer/test/mock_gpio.hpp
new file mode 100644
index 0000000..e68b1de
--- /dev/null
+++ b/phosphor-power-sequencer/test/mock_gpio.hpp
@@ -0,0 +1,46 @@
+/**
+ * Copyright © 2025 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "gpio.hpp"
+
+#include <gmock/gmock.h>
+
+namespace phosphor::power::sequencer
+{
+
+/**
+ * @class MockGPIO
+ *
+ * Mock implementation of the GPIO interface.
+ */
+class MockGPIO : public GPIO
+{
+ public:
+ MockGPIO() = default;
+ MockGPIO(const MockGPIO&) = delete;
+ MockGPIO(MockGPIO&&) = delete;
+ MockGPIO& operator=(const MockGPIO&) = delete;
+ MockGPIO& operator=(MockGPIO&&) = delete;
+ virtual ~MockGPIO() = default;
+
+ MOCK_METHOD(void, request, (RequestType type), (override));
+ MOCK_METHOD(int, getValue, (), (override));
+ MOCK_METHOD(void, setValue, (int value), (override));
+ MOCK_METHOD(void, release, (), (override));
+};
+
+} // namespace phosphor::power::sequencer