GRÜN: Erwartungen implementiert

diff --git a/src/main/java/de/juplo/kafka/SumBusinessLogic.java b/src/main/java/de/juplo/kafka/SumBusinessLogic.java
index 73db4cff6ac96dd4a887c773d999f82e4c010597..38485d259162b3e3b1ac6f84f9510e2e8ec404f7 100644 (file)
--- a/src/main/java/de/juplo/kafka/SumBusinessLogic.java
+++ b/src/main/java/de/juplo/kafka/SumBusinessLogic.java
@@ -36,6 +36,9 @@ public class SumBusinessLogic
 
   public synchronized Long endSum(String user)
   {
-    return null;
+    if (!state.containsKey(user))
+      throw new IllegalStateException("No sumation for " + user + " in progress");
+
+    return state.get(user);
   }
 }