test: Überprüfung der Fachlogik ergänzt

[demos/kafka/training] / src / test / java / de / juplo / kafka / ApplicationTests.java

diff --git a/src/test/java/de/juplo/kafka/ApplicationTests.java b/src/test/java/de/juplo/kafka/ApplicationTests.java
index 4ddf8a9..1336050 100644 (file)
--- a/src/test/java/de/juplo/kafka/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/ApplicationTests.java
@@ -3,82 +3,122 @@ package de.juplo.kafka;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.serialization.StringSerializer;
 import org.apache.kafka.common.utils.Bytes;
+import org.springframework.beans.factory.annotation.Autowired;
 
+import java.util.*;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 
 public class ApplicationTests extends GenericApplicationTests<String, String>
 {
+  @Autowired
+  AdderResults results;
+
+
   public ApplicationTests()
   {
-    super(
-        new RecordGenerator()
+    super(new ApplicationTestRecrodGenerator());
+    ((ApplicationTestRecrodGenerator)recordGenerator).tests = this;
+  }
+
+
+  static class ApplicationTestRecrodGenerator implements RecordGenerator
+  {
+    ApplicationTests tests;
+
+    final int[] numbers = {1, 7, 3, 2, 33, 6, 11};
+    final String[] dieWilden13 =
+        IntStream
+            .range(1, 14)
+            .mapToObj(i -> "seeräuber-" + i)
+            .toArray(i -> new String[i]);
+    final StringSerializer stringSerializer = new StringSerializer();
+    final Bytes calculateMessage = new Bytes(stringSerializer.serialize(TOPIC, "CALCULATE"));
+
+    int counter = 0;
+
+    Map<String, List<AdderResult>> state;
+
+    @Override
+    public int generate(
+        boolean poisonPills,
+        boolean logicErrors,
+        Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+    {
+      counter = 0;
+      state =
+          Arrays
+              .stream(dieWilden13)
+              .collect(Collectors.toMap(
+                  seeräuber -> seeräuber,
+                  seeräuber -> new LinkedList()));
+
+      for (int i = 0; i < 33; i++)
+      {
+        String seeräuber = dieWilden13[i % 13];
+        int number = numbers[i % 7];
+
+        Bytes key = new Bytes(stringSerializer.serialize(TOPIC, seeräuber));
+
+        for (int message = 1; message <= number; message++)
         {
-          final int[] numbers = { 1, 7, 3, 2, 33, 6, 11 };
-          final String[] dieWilden13 =
-              IntStream
-                  .range(1,14)
-                  .mapToObj(i -> "seeräuber-" + i)
-                  .toArray(i -> new String[i]);
-          final StringSerializer stringSerializer = new StringSerializer();
-          final Bytes startMessage = new Bytes(stringSerializer.serialize(TOPIC, "START"));
-          final Bytes endMessage = new Bytes(stringSerializer.serialize(TOPIC, "END"));
-
-          int counter = 0;
-
-
-          @Override
-          public int generate(
-              boolean poisonPills,
-              boolean logicErrors,
-              Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
-          {
-            counter = 0;
-
-            for (int i = 0; i < 33; i++)
-            {
-              String seeräuber = dieWilden13[i%13];
-              int number = numbers[i%7];
-
-              Bytes key = new Bytes(stringSerializer.serialize(TOPIC, seeräuber));
-
-              send(key, startMessage, logicErrors, messageSender);
-              for (int message = 1; message <= number; message++)
-              {
-                Bytes value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(message)));
-                send(key, value, logicErrors, messageSender);
-              }
-              send(key, endMessage, logicErrors, messageSender);
-            }
-
-            return counter;
-          }
-
-          void send(
-              Bytes key,
-              Bytes value,
-              boolean logicErrors,
-              Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
-          {
-            counter++;
+          Bytes value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(message)));
+          send(key, value, logicErrors, messageSender);
+        }
+        send(key, calculateMessage, logicErrors, messageSender);
+
+        state.get(seeräuber).add(new AdderResult(number, (number + 1) * number / 2));
+      }
 
-            if (counter == 77)
-            {
-              if (logicErrors)
-              {
-                value = value.equals(startMessage) ? endMessage : startMessage;
-              }
-            }
+      return counter;
+    }
 
-            messageSender.accept(new ProducerRecord<>(TOPIC, key, value));
-          }
+    void send(
+        Bytes key,
+        Bytes value,
+        boolean logicErrors,
+        Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+    {
+      counter++;
 
-          @Override
-          public boolean canGeneratePoisonPill()
+      if (counter == 77)
+      {
+        if (logicErrors)
+        {
+          value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(-1)));
+        }
+      }
+
+      messageSender.accept(new ProducerRecord<>(TOPIC, key, value));
+    }
+
+    @Override
+    public boolean canGeneratePoisonPill()
+    {
+      return false;
+    }
+
+    @Override
+    public void assertBusinessLogic()
+    {
+      tests.results
+          .getState()
+          .values()
+          .stream()
+          .flatMap(map -> map.entrySet().stream())
+          .forEach(entry ->
           {
-            return false;
-          }
-        });
+            String user = entry.getKey();
+            List<AdderResult> resultsForUser = entry.getValue();
+
+            assertThat(state.get(user))
+                .describedAs("Unexpected results for user {}", user)
+                .containsExactlyElementsOf(resultsForUser);
+          });
+    }
   }
 }