add test for DirectPF

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1391898 13f79535-47bb-0310-9956-ffa450edef68

lucene/codecs/src/test/org/apache/lucene/codecs/memory/TestDirectPostingsFormat.java

@@ -0,0 +1,42 @@
+package org.apache.lucene.codecs.memory;
+
+/*
+ * 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.codecs.Codec;
+import org.apache.lucene.codecs.PostingsFormat;
+import org.apache.lucene.codecs.lucene40.Lucene40Codec;
+import org.apache.lucene.index.BasePostingsFormatTestCase;
+
+/**
+ * Tests DirectPostingsFormat
+ */
+public class TestDirectPostingsFormat extends BasePostingsFormatTestCase {
+  // TODO: randomize parameters
+  private final PostingsFormat postings = new DirectPostingsFormat();
+  private final Codec codec = new Lucene40Codec() {
+    @Override
+    public PostingsFormat getPostingsFormatForField(String field) {
+      return postings;
+    }
+  };
+
+  @Override
+  protected Codec getCodec() {
+    return codec;
+  }
+}