[02/16] samza git commit: SAMZA-1321: Propagate end-of-stream and watermark messages

[xi...@apache.org]

http://git-wip-us.apache.org/repos/asf/samza/blob/bb3007d6/samza-test/src/test/java/org/apache/samza/test/util/TestStreamConsumer.java
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diff --git a/samza-test/src/test/java/org/apache/samza/test/util/TestStreamConsumer.java b/samza-test/src/test/java/org/apache/samza/test/util/TestStreamConsumer.java
new file mode 100644
index 0000000..31eee15
--- /dev/null
+++ b/samza-test/src/test/java/org/apache/samza/test/util/TestStreamConsumer.java
@@ -0,0 +1,52 @@
+/*
+ * 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.samza.test.util;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.apache.samza.system.IncomingMessageEnvelope;
+import org.apache.samza.system.SystemConsumer;
+import org.apache.samza.system.SystemStreamPartition;
+
+public class TestStreamConsumer implements SystemConsumer {
+  private List<IncomingMessageEnvelope> envelopes;
+
+  public TestStreamConsumer(List<IncomingMessageEnvelope> envelopes) {
+    this.envelopes = envelopes;
+  }
+
+  @Override
+  public void start() { }
+
+  @Override
+  public void stop() { }
+
+  @Override
+  public void register(SystemStreamPartition systemStreamPartition, String offset) { }
+
+  @Override
+  public Map<SystemStreamPartition, List<IncomingMessageEnvelope>> poll(
+      Set<SystemStreamPartition> systemStreamPartitions, long timeout)
+      throws InterruptedException {
+    return systemStreamPartitions.stream().collect(Collectors.toMap(ssp -> ssp, ssp -> envelopes));
+  }
+}