Forgot to add TestSerializer to the commit list.

Author: rxin

core/src/test/scala/org/apache/spark/serializer/TestSerializer.scala

@@ -0,0 +1,60 @@
+/*
+ * 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.spark.serializer
+
+import java.io.{EOFException, OutputStream, InputStream}
+import java.nio.ByteBuffer
+
+import scala.reflect.ClassTag
+
+
+/**
+ * A serializer implementation that always return a single element in a deserialization stream.
+ */
+class TestSerializer extends Serializer {
+  override def newInstance() = new TestSerializerInstance
+}
+
+
+class TestSerializerInstance extends SerializerInstance {
+  override def serialize[T: ClassTag](t: T): ByteBuffer = ???
+
+  override def serializeStream(s: OutputStream): SerializationStream = ???
+
+  override def deserializeStream(s: InputStream) = new TestDeserializationStream
+
+  override def deserialize[T: ClassTag](bytes: ByteBuffer): T = ???
+
+  override def deserialize[T: ClassTag](bytes: ByteBuffer, loader: ClassLoader): T = ???
+}
+
+
+class TestDeserializationStream extends DeserializationStream {
+
+  private var count = 0
+
+  override def readObject[T: ClassTag](): T = {
+    count += 1
+    if (count == 2) {
+      throw new EOFException
+    }
+    new Object().asInstanceOf[T]
+  }
+
+  override def close(): Unit = {}
+}