From 11eeba55d369e14e0bef1f6f32a6efa4a570ef05 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Mon, 8 Jul 2024 21:31:16 +0200
Subject: [PATCH] Activated supression of intermediate results and adapted
 expected result

WIP:suppressed
---
 .../counter/AggregationTopologyTest.java      | 58 ++++++++-----------
 1 file changed, 24 insertions(+), 34 deletions(-)

diff --git a/src/test/java/de/juplo/kafka/wordcount/counter/AggregationTopologyTest.java b/src/test/java/de/juplo/kafka/wordcount/counter/AggregationTopologyTest.java
index 80e0f18..8b64042 100644
--- a/src/test/java/de/juplo/kafka/wordcount/counter/AggregationTopologyTest.java
+++ b/src/test/java/de/juplo/kafka/wordcount/counter/AggregationTopologyTest.java
@@ -2,12 +2,11 @@ package de.juplo.kafka.wordcount.counter;
 
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.common.serialization.Serdes;
+import org.apache.kafka.common.utils.Bytes;
 import org.apache.kafka.streams.*;
-import org.apache.kafka.streams.kstream.KStream;
-import org.apache.kafka.streams.kstream.SessionWindows;
-import org.apache.kafka.streams.kstream.Window;
-import org.apache.kafka.streams.kstream.Windowed;
+import org.apache.kafka.streams.kstream.*;
 import org.apache.kafka.streams.kstream.internals.SessionWindow;
+import org.apache.kafka.streams.state.SessionStore;
 import org.apache.kafka.streams.test.TestRecord;
 import org.junit.jupiter.api.Test;
 
@@ -38,7 +37,12 @@ public class AggregationTopologyTest
     input
         .groupByKey()
         .windowedBy(WINDOWS)
-        .reduce((aggregate, value) -> aggregate + "-" + value)
+        .reduce(
+            (aggregate, value) -> aggregate + "-" + value,
+            Materialized.<String, String, SessionStore<Bytes, byte[]>>as("aggregated-store")
+                .withKeySerde(Serdes.String())
+                .withValueSerde(Serdes.String()))
+        .suppress(Suppressed.untilWindowCloses(Suppressed.BufferConfig.unbounded()))
         .toStream((k,v) -> k.toString())
         .to(OUTPUT);
 
@@ -62,57 +66,43 @@ public class AggregationTopologyTest
 
 
     sendAt("A", 63);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(63, 63), "A"));
+    assertThatOutcomeIs();
 
     sendAt("B", 64);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(63, 63), null),
-        KeyValue.pair(windowFor(63, 64), "A-B"));
+    assertThatOutcomeIs();
 
     sendAt("C", 65);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(63, 64), null),
-        KeyValue.pair(windowFor(63, 65), "A-B-C"));
+    assertThatOutcomeIs();
 
     sendAt("D", 66);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(63, 65), null),
-        KeyValue.pair(windowFor(63, 66), "A-B-C-D"));
+    assertThatOutcomeIs();
 
     sendAt("E", 69);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(69, 69), "E"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(63, 66), "A-B-C-D"));
 
     sendAt("F", 70);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(69, 69), null),
-        KeyValue.pair(windowFor(69, 70), "E-F"));
+    assertThatOutcomeIs();
 
     sendAt("G", 74);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(74, 74), "G"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(69, 70), "E-F"));
 
     sendAt("H", 75);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(74, 74), null),
-        KeyValue.pair(windowFor(74, 75), "G-H"));
+    assertThatOutcomeIs();
 
     sendAt("I", 100);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(100, 100), "I"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(74, 75), "G-H"));
 
     sendAt("J", 120);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(120, 120), "J"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(100, 100), "I"));
 
     sendAt("K", 140);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(140, 140), "K"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(120, 120), "J"));
 
     sendAt("L", 160);
-    assertThatOutcomeIs(
-        KeyValue.pair(windowFor(160, 160), "L"));
+    assertThatOutcomeIs(KeyValue.pair(windowFor(140, 140), "K"));
+
+    // Never received, if no newer message is sent
+    // KeyValue.pair(windowFor(160, 160), "L"));
   }
 
 
-- 
2.20.1