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 51d579e..1336050 100644 (file)
--- a/src/test/java/de/juplo/kafka/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/ApplicationTests.java
@@ -1,84 +1,124 @@
 package de.juplo.kafka;
 
-import org.apache.kafka.clients.consumer.ConsumerRecord;
 import org.apache.kafka.clients.producer.ProducerRecord;
-import org.apache.kafka.common.serialization.LongSerializer;
 import org.apache.kafka.common.serialization.StringSerializer;
 import org.apache.kafka.common.utils.Bytes;
-import org.springframework.boot.test.context.TestConfiguration;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Primary;
-import org.springframework.test.context.ContextConfiguration;
+import org.springframework.beans.factory.annotation.Autowired;
 
-import java.util.Set;
+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;
 
-@ContextConfiguration(classes = ApplicationTests.Configuration.class)
-public class ApplicationTests extends GenericApplicationTests<String, Long>
+
+public class ApplicationTests extends GenericApplicationTests<String, String>
 {
-  public ApplicationTests()
-  {
-    super(
-        new RecordGenerator()
-        {
-          final StringSerializer stringSerializer = new StringSerializer();
-          final LongSerializer longSerializer = new LongSerializer();
+  @Autowired
+  AdderResults results;
 
 
-          @Override
-          public void generate(
-              int numberOfMessagesToGenerate,
-              Set<Integer> poisonPills,
-              Set<Integer> logicErrors,
-              Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
-          {
-            int i = 0;
-
-            for (int partition = 0; partition < 10; partition++)
-            {
-              for (int key = 0; key < 10; key++)
-              {
-                if (++i > numberOfMessagesToGenerate)
-                  return;
-
-                Bytes value = new Bytes(longSerializer.serialize(TOPIC, (long)i));
-                if (logicErrors.contains(i))
-                {
-                  value = new Bytes(longSerializer.serialize(TOPIC, Long.MIN_VALUE));
-                }
-                if (poisonPills.contains(i))
-                {
-                  value = new Bytes(stringSerializer.serialize(TOPIC, "BOOM (Poison-Pill)!"));
-                }
-
-                ProducerRecord<Bytes, Bytes> record =
-                    new ProducerRecord<>(
-                        TOPIC,
-                        partition,
-                        new Bytes(stringSerializer.serialize(TOPIC,Integer.toString(partition*10+key%2))),
-                        value);
-
-                messageSender.accept(record);
-              }
-            }
-          }
-        });
+  public ApplicationTests()
+  {
+    super(new ApplicationTestRecrodGenerator());
+    ((ApplicationTestRecrodGenerator)recordGenerator).tests = this;
   }
 
 
-  @TestConfiguration
-  public static class Configuration
+  static class ApplicationTestRecrodGenerator implements RecordGenerator
   {
-    @Primary
-    @Bean
-    public Consumer<ConsumerRecord<String, Long>> consumer()
+    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++)
+        {
+          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));
+      }
+
+      return counter;
+    }
+
+    void send(
+        Bytes key,
+        Bytes value,
+        boolean logicErrors,
+        Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
     {
-      return (record) ->
+      counter++;
+
+      if (counter == 77)
       {
-        if (record.value() == Long.MIN_VALUE)
-          throw new RuntimeException("BOOM (Logic-Error)!");
-      };
+        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 ->
+          {
+            String user = entry.getKey();
+            List<AdderResult> resultsForUser = entry.getValue();
+
+            assertThat(state.get(user))
+                .describedAs("Unexpected results for user {}", user)
+                .containsExactlyElementsOf(resultsForUser);
+          });
     }
   }
 }