Add service name env var for powertools-logging unit tests.

Author: phipag

powertools-logging/pom.xml

@@ -186,6 +186,7 @@
                 <configuration>
                     <environmentVariables>
                         <AWS_LAMBDA_LOG_FORMAT>JSON</AWS_LAMBDA_LOG_FORMAT>
+                        <POWERTOOLS_SERVICE_NAME>testService</POWERTOOLS_SERVICE_NAME>
                     </environmentVariables>
                 </configuration>
             </plugin>

powertools-logging/src/test/java/software/amazon/lambda/powertools/logging/PowertoolsLoggingTest.java

@@ -245,7 +245,7 @@ void initializeLogging_withContextOnly_shouldSetLambdaFields() {
                 .containsEntry(PowertoolsLoggedFields.FUNCTION_NAME.getName(), "test-function")
                 .containsEntry(PowertoolsLoggedFields.FUNCTION_VERSION.getName(), "1")
                 .containsEntry(PowertoolsLoggedFields.FUNCTION_COLD_START.getName(), "true")
-                .containsEntry(PowertoolsLoggedFields.SERVICE.getName(), "service_undefined");
+                .containsEntry(PowertoolsLoggedFields.SERVICE.getName(), "testService");
     }
 
     @Test