Added tests for hunspell token filter factory

src/main/java/org/elasticsearch/index/analysis/HunspellTokenFilterFactory.java

@@ -57,4 +57,9 @@ public class HunspellTokenFilterFactory extends AbstractTokenFilterFactory {
     public TokenStream create(TokenStream tokenStream) {
         return new HunspellStemFilter(tokenStream, dictionary, dedup);
     }
+
+    public boolean dedup() {
+        return dedup;
+    }
+
 }

src/test/java/org/elasticsearch/test/unit/index/analysis/HunspellTokenFilterFactoryTests.java

@@ -0,0 +1,66 @@
+/*
+ * Licensed to ElasticSearch and Shay Banon under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. ElasticSearch 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.elasticsearch.test.unit.index.analysis;
+
+import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.index.analysis.AnalysisService;
+import org.elasticsearch.index.analysis.HunspellTokenFilterFactory;
+import org.elasticsearch.index.analysis.TokenFilterFactory;
+import org.testng.annotations.Test;
+
+import java.io.IOException;
+
+import static org.elasticsearch.common.settings.ImmutableSettings.settingsBuilder;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.instanceOf;
+import static org.hamcrest.Matchers.is;
+
+public class HunspellTokenFilterFactoryTests {
+
+
+    @Test
+    public void testDedup() throws IOException {
+        Settings settings = settingsBuilder()
+                .put("path.conf", getClass().getResource("/indices/analyze/conf_dir").getFile())
+                .put("index.analysis.filter.en_US.type", "hunspell")
+                .put("index.analysis.filter.en_US.locale", "en_US")
+                .build();
+
+        AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromSettings(settings);
+        TokenFilterFactory tokenFilter = analysisService.tokenFilter("en_US");
+        assertThat(tokenFilter, instanceOf(HunspellTokenFilterFactory.class));
+        HunspellTokenFilterFactory hunspellTokenFilter = (HunspellTokenFilterFactory) tokenFilter;
+        assertThat(hunspellTokenFilter.dedup(), is(true));
+
+        settings = settingsBuilder()
+                .put("path.conf", getClass().getResource("/indices/analyze/conf_dir").getFile())
+                .put("index.analysis.filter.en_US.type", "hunspell")
+                .put("index.analysis.filter.en_US.dedup", false)
+                .put("index.analysis.filter.en_US.locale", "en_US")
+                .build();
+
+        analysisService = AnalysisTestsHelper.createAnalysisServiceFromSettings(settings);
+        tokenFilter = analysisService.tokenFilter("en_US");
+        assertThat(tokenFilter, instanceOf(HunspellTokenFilterFactory.class));
+        hunspellTokenFilter = (HunspellTokenFilterFactory) tokenFilter;
+        assertThat(hunspellTokenFilter.dedup(), is(false));
+    }
+
+}