Replace RAMDirectory with ByteBuffersDirectory in tests

fixes #2454

Author: ahornace

suggester/src/test/java/org/opengrok/suggest/SuggesterProjectDataTest.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2019 Oracle and/or its affiliates. All rights reserved.
  */
 package org.opengrok.suggest;
 
@@ -30,6 +30,7 @@
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.search.suggest.Lookup;
+import org.apache.lucene.store.ByteBuffersDirectory;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.util.BytesRef;
 import org.hamcrest.Matchers;
@@ -66,9 +67,8 @@ public class SuggesterProjectDataTest {
     private SuggesterProjectData data;
 
     @Before
-    @SuppressWarnings("deprecation") // for RAMDirectory
     public void setUp() throws IOException {
-        dir = new org.apache.lucene.store.RAMDirectory();
+        dir = new ByteBuffersDirectory();
         tempDir = Files.createTempDirectory("test");
     }
 
@@ -262,9 +262,8 @@ public void getSearchCountMapNullTest() throws IOException {
     }
 
     @Test
-    @SuppressWarnings("deprecation") // for RAMDirectory
     public void testRemove() throws IOException {
-        Directory dir = new org.apache.lucene.store.RAMDirectory();
+        Directory dir = new ByteBuffersDirectory();
         Path tempDir = Files.createTempDirectory("test");
 
         try (IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig())) {

suggester/src/test/java/org/opengrok/suggest/SuggesterSearcherTest.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2019 Oracle and/or its affiliates. All rights reserved.
  */
 package org.opengrok.suggest;
 
@@ -31,6 +31,7 @@
 import org.apache.lucene.index.IndexWriterConfig;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.search.TermQuery;
+import org.apache.lucene.store.ByteBuffersDirectory;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.util.BytesRef;
 import org.junit.AfterClass;
@@ -58,9 +59,8 @@ public class SuggesterSearcherTest {
     private static SuggesterSearcher searcher;
 
     @BeforeClass
-    @SuppressWarnings("deprecation") // for RAMDirectory
     public static void setUpClass() throws IOException {
-        dir = new org.apache.lucene.store.RAMDirectory();
+        dir = new ByteBuffersDirectory();
 
         try (IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig())) {
             Document doc1 = new Document();

suggester/src/test/java/org/opengrok/suggest/query/customized/CustomSloppyPhraseScorerTest.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2019 Oracle and/or its affiliates. All rights reserved.
  */
 package org.opengrok.suggest.query.customized;
 
@@ -35,6 +35,7 @@
 import org.apache.lucene.search.Scorer;
 import org.apache.lucene.search.TwoPhaseIterator;
 import org.apache.lucene.search.Weight;
+import org.apache.lucene.store.ByteBuffersDirectory;
 import org.apache.lucene.store.Directory;
 import org.junit.Test;
 import org.opengrok.suggest.query.PhraseScorer;
@@ -47,7 +48,6 @@
 import static org.hamcrest.collection.IsIterableContainingInOrder.contains;
 import static org.junit.Assert.assertThat;
 
-@SuppressWarnings("deprecation") // for RAMDirectory
 public class CustomSloppyPhraseScorerTest {
 
     @SuppressWarnings("unchecked") // for contains()
@@ -57,7 +57,7 @@ public static void test(
             final String[] terms,
             final Integer[] expectedPositions
     ) throws IOException {
-        Directory dir = new org.apache.lucene.store.RAMDirectory();
+        Directory dir = new ByteBuffersDirectory();
 
         try (IndexWriter iw = new IndexWriter(dir, new IndexWriterConfig())) {
             Document doc = new Document();