Add MeterReadingServiceTest

Author: superxcgm

rest/service/MeterReadingService.h

@@ -9,6 +9,7 @@
 
 #include <iostream>
 #include <map>
+#include <unordered_map>
 #include <optional>
 #include <string>
 #include <vector>

test/CMakeLists.txt

@@ -12,6 +12,11 @@ add_executable(domain_test)
 target_sources(domain_test PRIVATE domain/PricePlanTest.cpp)
 target_link_libraries(domain_test PRIVATE GTest::gmock_main rest)
 
+add_executable(service_test)
+target_sources(service_test PRIVATE service/MeterReadingServiceTest.cpp)
+target_link_libraries(service_test PRIVATE GTest::gmock_main rest)
+
 add_test(endpoint_test endpoint_test)
 add_test(controller_test controller_test)
-add_test(domain_test domain_test)
+add_test(domain_test domain_test)
+add_test(service_test service_test)

test/service/MeterReadingServiceTest.cpp

@@ -0,0 +1,21 @@
+#include <gmock/gmock.h>
+#include <rest/service/MeterReadingService.h>
+
+TEST(MeterReadingServiceTest, GetReadingsShouldReturnNullGivenMeterIdThatDoesNotExist) {
+  std::unordered_map<std::string, std::vector<ElectricityReading>> meterAssociatedReadings;
+  MeterReadingService meterReadingService{meterAssociatedReadings};
+
+  EXPECT_FALSE(meterReadingService.getReadings("unknown-id").has_value());
+}
+
+TEST(MeterReadingServiceTest, GetReadingsShouldReturnMeterReadingsGivenMeterReadingThatExists) {
+  std::unordered_map<std::string, std::vector<ElectricityReading>> meterAssociatedReadings;
+  MeterReadingService meterReadingService{meterAssociatedReadings};
+  std::vector<ElectricityReading> emptyReadings;
+  meterReadingService.storeReadings("some-id", emptyReadings);
+
+  auto readings = meterReadingService.getReadings("some-id");
+
+  EXPECT_TRUE(readings.has_value());
+  EXPECT_TRUE(readings.value().empty());
+}