fix a bug which stores readings in wrong unit

reading = json_value * 10000

Author: haohaolee

rest/controller/MeterReadingController.h

@@ -65,7 +65,11 @@ class MeterReadingController {
       return {http::status::internal_server_error, 11};
     }
     for (auto &electricityReading : body["electricityReadings"]) {
-      electricityReadings.emplace_back(detail::fromRfc3339(electricityReading["time"]), electricityReading["reading"]);
+      auto time = detail::fromRfc3339(electricityReading["time"]);
+      auto reading = static_cast<std::size_t>(
+        electricityReading["reading"].get<double>() * 10000
+      );
+      electricityReadings.emplace_back(time, reading);
     }
     meterReadingService_.storeReadings(smartMeterId, electricityReadings);
     return {};

test/controller/MeterReadingControllerTest.cpp

@@ -65,7 +65,7 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreGivenMultipleBatchesOfMeterRe
             "electricityReadings": [
                     {
                             "time": "2021-08-18T06:42:15.725202Z",
-                            "reading": 1
+                            "reading": 0.001
                     }
             ]
     })"_json;
@@ -74,7 +74,7 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreGivenMultipleBatchesOfMeterRe
             "electricityReadings": [
                     {
                             "time": "2021-08-18T06:44:15.725202Z",
-                            "reading": 2
+                            "reading": 0.002
                     }
             ]
     })"_json;
@@ -86,8 +86,8 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreGivenMultipleBatchesOfMeterRe
   controller_.Store(req2, queries);
 
   std::vector<ElectricityReading> expectedElectricityReadings = {
-      {detail::fromRfc3339("2021-08-18T06:42:15.725202Z"), 1},
-      {detail::fromRfc3339("2021-08-18T06:44:15.725202Z"), 2}
+      {detail::fromRfc3339("2021-08-18T06:42:15.725202Z"), 10},
+      {detail::fromRfc3339("2021-08-18T06:44:15.725202Z"), 20}
   };
 
   EXPECT_THAT(meterReadingService_.getReadings("smart-meter-0"), Eq(expectedElectricityReadings));
@@ -99,7 +99,7 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreAssociatedWithUserGivenMeterR
             "electricityReadings": [
                     {
                             "time": "2021-08-18T06:42:15.725202Z",
-                            "reading": 1
+                            "reading": 0.001
                     }
             ]
     })"_json;
@@ -108,7 +108,7 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreAssociatedWithUserGivenMeterR
             "electricityReadings": [
                     {
                             "time": "2021-08-18T06:44:15.725202Z",
-                            "reading": 2
+                            "reading": 0.002
                     }
             ]
     })"_json;
@@ -120,7 +120,7 @@ TEST_F(MeterReadingControllerTest, StoreShouldStoreAssociatedWithUserGivenMeterR
   controller_.Store(req2, queries);
 
   std::vector<ElectricityReading> expectedElectricityReadings = {
-      {detail::fromRfc3339("2021-08-18T06:42:15.725202Z"), 1},
+      {detail::fromRfc3339("2021-08-18T06:42:15.725202Z"), 10},
   };
 
   EXPECT_THAT(meterReadingService_.getReadings("smart-meter-0"), Eq(expectedElectricityReadings));