[GitHub] [kafka] bbejeck commented on a diff in pull request #12861: KAFKA-14388 - Fixes the NPE when using the new Processor API with the DSL

[GitBox <gi...@apache.org>]

bbejeck commented on code in PR #12861:
URL: https://github.com/apache/kafka/pull/12861#discussion_r1024098085


##########
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamNewProcessorApiTest.java:
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@@ -0,0 +1,117 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.kafka.streams.kstream.internals;
+
+import org.apache.kafka.common.serialization.Deserializer;
+import org.apache.kafka.common.serialization.Serdes;
+import org.apache.kafka.streams.KeyValue;
+import org.apache.kafka.streams.StreamsBuilder;
+import org.apache.kafka.streams.TestInputTopic;
+import org.apache.kafka.streams.TopologyTestDriver;
+import org.apache.kafka.streams.kstream.Consumed;
+import org.apache.kafka.streams.kstream.Produced;
+import org.apache.kafka.streams.processor.api.ContextualFixedKeyProcessor;
+import org.apache.kafka.streams.processor.api.FixedKeyProcessorContext;
+import org.apache.kafka.streams.processor.api.FixedKeyProcessorSupplier;
+import org.apache.kafka.streams.processor.api.FixedKeyRecord;
+import org.apache.kafka.streams.state.KeyValueStore;
+import org.apache.kafka.streams.state.StoreBuilder;
+import org.apache.kafka.streams.state.Stores;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+
+import static java.util.Arrays.asList;
+
+
+public class KStreamNewProcessorApiTest {
+
+    @Test
+    @DisplayName("Test for using new Processor API and state stores with the DSL")
+    void shouldGetStateStoreWithNewProcessor() {
+        final StreamsBuilder builder = new StreamsBuilder();
+        final StoreBuilder<?> storeBuilder = Stores.keyValueStoreBuilder(Stores.inMemoryKeyValueStore("store"), Serdes.String(), Serdes.String());
+
+
+        builder.stream("input", Consumed.with(Serdes.String(), Serdes.String()))
+                .processValues(new TransformerSupplier(storeBuilder), "store")

Review Comment:
   ack - I'll add test for using `addStateStore` instead of using `ConnectedStoreProvider` as well



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