Set the metric name for alerts in fake config and add a test to make sure the fake config is valid..

Test: unit test passed.
Change-Id: I1879fc523cca9fc6c672332ab4ac383f21dc16fc
diff --git a/cmds/statsd/src/config/ConfigManager.cpp b/cmds/statsd/src/config/ConfigManager.cpp
index 0c9252e..408eeda 100644
--- a/cmds/statsd/src/config/ConfigManager.cpp
+++ b/cmds/statsd/src/config/ConfigManager.cpp
@@ -30,8 +30,6 @@
 
 #define STATS_SERVICE_DIR "/data/system/stats-service"
 
-static StatsdConfig build_fake_config();
-
 using android::base::StringPrintf;
 using std::unique_ptr;
 
@@ -229,7 +227,7 @@
     }
 }
 
-static StatsdConfig build_fake_config() {
+StatsdConfig build_fake_config() {
     // HACK: Hard code a test metric for counting screen on events...
     StatsdConfig config;
     config.set_name("CONFIG_12345");
diff --git a/cmds/statsd/src/config/ConfigManager.h b/cmds/statsd/src/config/ConfigManager.h
index 01d7fb9..74a1574 100644
--- a/cmds/statsd/src/config/ConfigManager.h
+++ b/cmds/statsd/src/config/ConfigManager.h
@@ -34,6 +34,9 @@
 using std::vector;
 using std::pair;
 
+// Util function to Hard code a test metric for counting screen on events.
+StatsdConfig build_fake_config();
+
 /**
  * Keeps track of which configurations have been set from various sources.
  *
diff --git a/cmds/statsd/src/metrics/MetricsManager.h b/cmds/statsd/src/metrics/MetricsManager.h
index 59ade7c..a6054e3 100644
--- a/cmds/statsd/src/metrics/MetricsManager.h
+++ b/cmds/statsd/src/metrics/MetricsManager.h
@@ -101,7 +101,7 @@
     // maps from ConditionTracker to MetricProducer
     std::unordered_map<int, std::vector<int>> mConditionToMetricMap;
 
-    bool mConfigValid;
+    bool mConfigValid = false;
 };
 
 }  // namespace statsd