Add failsafe logger for zones

Tested:
...
Nov 23 21:40:06 tmddp10-nfd01.prod.google.com swampd[4893]:
Zone `0` is in failsafe mode.
With update at `fleeting0`: The sensor has bad readings.
Nov 23 21:40:06 tmddp10-nfd01.prod.google.com swampd[4893]:
Zone `1` is in failsafe mode.
With update at `fleeting1`: The sensor has bad readings.
Nov 23 21:40:06 tmddp10-nfd01.prod.google.com swampd[4893]:
Zone `1` leaves failsafe mode.
With update at `hotswap_in_Input_Power`: The sensor has recovered.
Nov 23 21:40:06 tmddp10-nfd01.prod.google.com swampd[4893]:
Zone `0` leaves failsafe mode.
With update at `hotswap_in_Input_Power`: The sensor has recovered.
...

Change-Id: I2c296addb7ad117c03c04a27de91204796cda036
Signed-off-by: James Zheng <alphetis@google.com>
diff --git a/test/pid_zone_unittest.cpp b/test/pid_zone_unittest.cpp
index 5155971..47b3f97 100644
--- a/test/pid_zone_unittest.cpp
+++ b/test/pid_zone_unittest.cpp
@@ -1,3 +1,6 @@
+#include "failsafeloggers/builder.hpp"
+#include "failsafeloggers/failsafe_logger.hpp"
+#include "failsafeloggers/failsafe_logger_utility.hpp"
 #include "pid/ec/logging.hpp"
 #include "pid/ec/pid.hpp"
 #include "pid/zone.hpp"
@@ -10,6 +13,7 @@
 
 #include <chrono>
 #include <cstring>
+#include <unordered_map>
 #include <vector>
 
 #include <gmock/gmock.h>
@@ -344,6 +348,10 @@
     // This test will add a couple thermal inputs, and verify that the zone
     // initializes into failsafe mode, and will read each sensor.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     std::string name1 = "temp1";
     int64_t timeout = 1;
 
@@ -396,6 +404,10 @@
 {
     // This will add a couple fan inputs, and verify the values are cached.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     std::string name1 = "fan1";
     int64_t timeout = 2;
 
@@ -444,6 +456,10 @@
     // On the second updateSensors call, the updated timestamp will be beyond
     // the timeout limit.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     int64_t timeout = 1;
 
     std::string name1 = "temp1";
@@ -506,6 +522,10 @@
     // only sensor1 goes missing.
     // However, sensor2 going missing should still trigger failsafe mode.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     int64_t timeout = 1;
 
     std::string name1 = "temp1";
@@ -602,6 +622,10 @@
 {
     // This will add a couple fan inputs, and verify the values are cached.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     std::string name1 = "fan1";
     int64_t timeout = 2;
 
@@ -655,6 +679,10 @@
 {
     // This will add a couple fan inputs, and verify the values are cached.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     std::string name1 = "fan1";
     int64_t timeout = 2;
 
@@ -714,6 +742,10 @@
 {
     // One can grab a sensor from the manager through the zone.
 
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     int64_t timeout = 1;
 
     std::string name1 = "temp1";
@@ -804,6 +836,11 @@
 {
     // This property is implemented by us as read-only, such that trying to
     // write to it will have no effect.
+
+    // Disable failsafe logger for the unit test.
+    std::unordered_map<int64_t, std::shared_ptr<ZoneInterface>> empty_zone_map;
+    buildFailsafeLoggers(empty_zone_map, 0);
+
     EXPECT_EQ(zone->failSafe(), zone->getFailSafeMode());
 }