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diff --git a/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/TestPayloadExplanations.java b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/TestPayloadExplanations.java
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+++ b/lucene-java-3.5.0/lucene/src/test/org/apache/lucene/search/payloads/TestPayloadExplanations.java
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+package org.apache.lucene.search.payloads;
+
+/**
+ * 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.
+ */
+
+import org.apache.lucene.index.Term;
+import org.apache.lucene.search.DefaultSimilarity;
+import org.apache.lucene.search.Similarity;
+import org.apache.lucene.search.TestExplanations;
+import org.apache.lucene.search.spans.SpanQuery;
+import org.apache.lucene.util.BytesRef;
+
+/**
+ * TestExplanations subclass focusing on payload queries
+ */
+public class TestPayloadExplanations extends TestExplanations {
+  private PayloadFunction functions[] = new PayloadFunction[] { 
+      new AveragePayloadFunction(),
+      new MinPayloadFunction(),
+      new MaxPayloadFunction(),
+  };
+  
+  @Override
+  public void setUp() throws Exception {
+    super.setUp();
+    searcher.setSimilarity(new PayloadBoostSimilarity());
+  }
+  
+  // must be a static class so it can serialize
+  private static class PayloadBoostSimilarity extends DefaultSimilarity {
+    @Override
+    public float scorePayload(int docId, String fieldName, int start, int end, byte[] payload, int offset, int length) {
+      return 1 + (new BytesRef(payload, offset, length).hashCode() % 10);
+    }
+  }
+
+  /** macro for payloadtermquery */
+  private SpanQuery pt(String s, PayloadFunction fn, boolean includeSpanScore) {
+    return new PayloadTermQuery(new Term(FIELD,s), fn, includeSpanScore);
+  }
+  
+  /* simple PayloadTermQueries */
+  
+  public void testPT1() throws Exception {
+    for (PayloadFunction fn : functions) {
+      qtest(pt("w1", fn, false), new int[] {0,1,2,3});
+      qtest(pt("w1", fn, true), new int[] {0,1,2,3});
+    }
+  }
+
+  public void testPT2() throws Exception {
+    for (PayloadFunction fn : functions) {
+      SpanQuery q = pt("w1", fn, false);
+      q.setBoost(1000);
+      qtest(q, new int[] {0,1,2,3});
+      q = pt("w1", fn, true);
+      q.setBoost(1000);
+      qtest(q, new int[] {0,1,2,3});
+    }
+  }
+
+  public void testPT4() throws Exception {
+    for (PayloadFunction fn : functions) {
+      qtest(pt("xx", fn, false), new int[] {2,3});
+      qtest(pt("xx", fn, true), new int[] {2,3});
+    }
+  }
+
+  public void testPT5() throws Exception {
+    for (PayloadFunction fn : functions) {
+      SpanQuery q = pt("xx", fn, false);
+      q.setBoost(1000);
+      qtest(q, new int[] {2,3});
+      q = pt("xx", fn, true);
+      q.setBoost(1000);
+      qtest(q, new int[] {2,3});
+    }
+  }
+
+  // TODO: test the payloadnear query too!
+}