fix metric saving for running in tests

src/main/java/xyz/mcutils/backend/common/AppConfig.java

@@ -4,7 +4,7 @@ import lombok.Getter;
 import lombok.experimental.UtilityClass;
 
 @UtilityClass
-public final class EnvironmentUtils {
+public final class AppConfig {
     /**
      * Is the app running in a production environment?
      */
@@ -14,4 +14,17 @@ public final class EnvironmentUtils {
         String env = System.getenv("ENVIRONMENT");
         production = env != null && (env.equals("production"));
     }
+
+    /**
+     * Is the app running in a test environment?
+     */
+    @Getter
+    private static boolean isRunningTest = true;
+    static {
+        try {
+            Class.forName("org.junit.Test");
+        } catch (ClassNotFoundException e) {
+            isRunningTest = false;
+        }
+    }
 }