UtilsStringIntegrationTest.java

/*
 * 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,
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package org.apache.commons.lang3;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

public class UtilsStringIntegrationTest {

   
    @Test
    public void testTextNormalizationScenario() {
        String rawInput = "   Héllò     Wórld!   ";

        //Trim the string (removes leading/trailing whitespace)
        String trimmed = StringUtils.trim(rawInput);
        assertEquals("Héllò     Wórld!", trimmed, "Trim step failed");

        //Remove accents (Héllò → Hello, Wórld → World)
        String noAccents = StringUtils.stripAccents(trimmed);
        assertEquals("Hello     World!", noAccents, "Accent stripping failed");

        //Normalize internal whitespace (collapse multiple spaces to one)
        String normalizedSpace = StringUtils.normalizeSpace(noAccents);
        assertEquals("Hello World!", normalizedSpace, "Space normalization failed");

        //Convert to lowercase
        String finalResult = normalizedSpace.toLowerCase();
        assertEquals("hello world!", finalResult, "Lowercasing failed");
    }    
}