using NUnit.Framework;
using System;
using System.IO;

namespace Lucene.Net.Analysis.Miscellaneous
{
    /*
     * 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 TestLimitTokenCountFilter : BaseTokenStreamTestCase
    {

        [Test]
        public virtual void Test()
        {
            foreach (bool consumeAll in new bool[] { true, false })
            {
                MockTokenizer tokenizer = new MockTokenizer(new StringReader("A1 B2 C3 D4 E5 F6"), MockTokenizer.WHITESPACE, false);
                tokenizer.EnableChecks = consumeAll;
                TokenStream stream = new LimitTokenCountFilter(tokenizer, 3, consumeAll);
                AssertTokenStreamContents(stream, new string[] { "A1", "B2", "C3" });
            }
        }

        [Test]
        public virtual void TestIllegalArguments()
        {
            Assert.Throws<ArgumentOutOfRangeException>(() => new LimitTokenCountFilter(new MockTokenizer(new StringReader("A1 B2 C3 D4 E5 F6"), MockTokenizer.WHITESPACE, false), -1));
        }
    }
}