test: pid: zone

Add unit-tests for the PID zone module.
Add zone_mock.

Tested: Ran on quanta-q71l board and it behaved as expected.

Change-Id: I51185b2d2daacea6ffb687e8f38c4fe2b2a1bed3
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/sensor_manager_unittest.cpp b/test/sensor_manager_unittest.cpp
index b873886..eed26cd 100644
--- a/test/sensor_manager_unittest.cpp
+++ b/test/sensor_manager_unittest.cpp
@@ -23,7 +23,7 @@
                     IsNull(),
                     _,
                     StrEq("/xyz/openbmc_project/extsensors")))
-    .WillOnce(Return(0));
+        .WillOnce(Return(0));
 
     SensorManager s(std::move(bus_mock_passive), std::move(bus_mock_host));
     // Success
@@ -43,7 +43,7 @@
                     IsNull(),
                     _,
                     StrEq("/xyz/openbmc_project/extsensors")))
-    .WillOnce(Return(0));
+        .WillOnce(Return(0));
 
     SensorManager s(std::move(bus_mock_passive), std::move(bus_mock_host));
 
@@ -55,5 +55,5 @@
     Sensor *sensor_ptr = sensor.get();
 
     s.addSensor(type, name, std::move(sensor));
-    EXPECT_EQ(s.getSensor(name).get(), sensor_ptr);
+    EXPECT_EQ(s.getSensor(name), sensor_ptr);
 }