Add new google ipmi sys command: SysHostPowerOff

New google ipmi sys command to let the BMC knows host shutdown,
allow host to gracefully shutdown and disable the watchdog with given
time delay.

Signed-off-by: Yunyun Lin <linyuny@google.com>
Change-Id: I02171c9cfed57ae5d10d66b515e4ab7ee8856466
diff --git a/test/poweroff_unittest.cpp b/test/poweroff_unittest.cpp
new file mode 100644
index 0000000..ce9501b
--- /dev/null
+++ b/test/poweroff_unittest.cpp
@@ -0,0 +1,49 @@
+#include "commands.hpp"
+#include "handler_mock.hpp"
+#include "host_power_off.hpp"
+
+#include <cstdint>
+#include <cstring>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#define MAX_IPMI_BUFFER 64
+
+namespace google
+{
+namespace ipmi
+{
+
+TEST(PowerOffCommandTest, InvalidRequestLength)
+{
+    std::vector<std::uint8_t> request = {SysOEMCommands::SysHostPowerOff};
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+
+    HandlerMock hMock;
+    EXPECT_EQ(IPMI_CC_REQ_DATA_LEN_INVALID,
+              hostPowerOff(request.data(), reply, &dataLen, &hMock));
+}
+
+TEST(PowerOffCommandTest, ValidRequest)
+{
+    // Set the dealy to 15 mins
+    std::uint32_t delayValue = 0x384;
+    struct HostPowerOffRequest requestContents;
+    requestContents.subcommand = SysOEMCommands::SysHostPowerOff;
+    requestContents.delay = delayValue;
+
+    std::vector<std::uint8_t> request(sizeof(requestContents));
+    std::memcpy(request.data(), &requestContents, sizeof(requestContents));
+    size_t dataLen = request.size();
+    std::uint8_t reply[MAX_IPMI_BUFFER];
+
+    HandlerMock hMock;
+    EXPECT_CALL(hMock, hostPowerOffDelay(delayValue));
+    EXPECT_EQ(IPMI_CC_OK,
+              hostPowerOff(request.data(), reply, &dataLen, &hMock));
+}
+
+} // namespace ipmi
+} // namespace google