src/Lucene.Net.Tests.Analysis.Common/Analysis/Hunspell/TestStemmer.cs

using NUnit.Framework;

namespace Lucene.Net.Analysis.Hunspell
{
    /*
	 * 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.
	 */

    public class TestStemmer : StemmerTestBase
    {

        [TestFixtureSetUp]
        public static void BeforeClass()
        {
            Init("simple.aff", "simple.dic");
        }
        [Test]
        public virtual void TestSimpleSuffix()
        {
            AssertStemsTo("lucene", "lucene", "lucen");
            AssertStemsTo("mahoute", "mahout");
        }
        [Test]
        public virtual void TestSimplePrefix()
        {
            AssertStemsTo("solr", "olr");
        }
        [Test]
        public virtual void TestRecursiveSuffix()
        {
            // we should not recurse here, as the suffix has no continuation!
            AssertStemsTo("abcd");
        }

        // all forms unmunched from dictionary
        [Test]
        public virtual void TestAllStems()
        {
            AssertStemsTo("ab", "ab");
            AssertStemsTo("abc", "ab");
            AssertStemsTo("apach", "apach");
            AssertStemsTo("apache", "apach");
            AssertStemsTo("foo", "foo", "foo");
            AssertStemsTo("food", "foo");
            AssertStemsTo("foos", "foo");
            AssertStemsTo("lucen", "lucen");
            AssertStemsTo("lucene", "lucen", "lucene");
            AssertStemsTo("mahout", "mahout");
            AssertStemsTo("mahoute", "mahout");
            AssertStemsTo("moo", "moo");
            AssertStemsTo("mood", "moo");
            AssertStemsTo("olr", "olr");
            AssertStemsTo("solr", "olr");
        }

        // some bogus stuff that should not stem (empty lists)!
        [Test]
        public virtual void TestBogusStems()
        {
            AssertStemsTo("abs");
            AssertStemsTo("abe");
            AssertStemsTo("sab");
            AssertStemsTo("sapach");
            AssertStemsTo("sapache");
            AssertStemsTo("apachee");
            AssertStemsTo("sfoo");
            AssertStemsTo("sfoos");
            AssertStemsTo("fooss");
            AssertStemsTo("lucenee");
            AssertStemsTo("solre");
        }
    }
}