src/Lucene.Net.Tests.TestFramework/Analysis/TestMockCharFilter.cs

// Lucene version compatibility level 8.2.0
using System;
using Lucene.Net.TestFramework;

#if TESTFRAMEWORK_MSTEST
using Test = Microsoft.VisualStudio.TestTools.UnitTesting.TestMethodAttribute;
using Assert = Lucene.Net.TestFramework.Assert;
#elif TESTFRAMEWORK_NUNIT
using Test = NUnit.Framework.TestAttribute;
using Assert = NUnit.Framework.Assert;
#elif TESTFRAMEWORK_XUNIT
using Test = Lucene.Net.TestFramework.SkippableFactAttribute;
using Assert = Lucene.Net.TestFramework.Assert;
#endif

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

#if TESTFRAMEWORK_MSTEST
    [Microsoft.VisualStudio.TestTools.UnitTesting.TestClassAttribute]
#endif
    public class TestMockCharFilter : BaseTokenStreamTestCase
#if TESTFRAMEWORK_XUNIT
        , Xunit.IClassFixture<BeforeAfterClass>
    {
        public TestMockCharFilter(BeforeAfterClass beforeAfter)
            : base(beforeAfter)
        {
        }
#else
    {
#endif

        [Test]
        public void Test()
        {
            Analyzer analyzer = Analyzer.NewAnonymous(createComponents: (fieldName, reader) =>
            {
                Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
                return new TokenStreamComponents(tokenizer, tokenizer);
            },
            initReader: (fieldName, reader) =>
            {
                return new MockCharFilter(reader, 7);
            });


            AssertAnalyzesTo(analyzer, "ab",
                new String[] { "aab" },
                new int[] { 0 },
                new int[] { 2 }
            );

            AssertAnalyzesTo(analyzer, "aba",
                new String[] { "aabaa" },
                new int[] { 0 },
                new int[] { 3 }
            );

            AssertAnalyzesTo(analyzer, "abcdefga",
                new String[] { "aabcdefgaa" },
                new int[] { 0 },
                new int[] { 8 }
            );
        }
    }
}