001    /*
002     * Copyright 2010 - 2010 JEuclid, http://jeuclid.sf.net
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    /* $Id: StringUtilTest.java,v 92b6a7c39d7f 2010/08/11 20:23:17 max $ */
018    
019    package net.sourceforge.jeuclid.test;
020    
021    import net.sourceforge.jeuclid.elements.support.text.StringUtil;
022    
023    import org.junit.Assert;
024    import org.junit.Test;
025    
026    /**
027     * Tests for {@link StringUtil}.
028     *
029     * @version $Revision: 92b6a7c39d7f $
030     */
031    public class StringUtilTest {
032    
033        /** Default constructor. */
034        public StringUtilTest() {
035            // nothing to do.
036        }
037    
038        /**
039         * Test for {@link StringUtil#countDisplayableCharacters(String)}.
040         */
041        @Test
042        public void testCountDisplayableCharacters() {
043            Assert.assertEquals(StringUtil.countDisplayableCharacters(null), 0);
044            Assert.assertEquals(StringUtil.countDisplayableCharacters(""), 0);
045            Assert.assertEquals(StringUtil.countDisplayableCharacters("a"), 1);
046            Assert.assertEquals(StringUtil.countDisplayableCharacters("abc"), 3);
047    
048            // High surrogate
049            Assert.assertEquals(
050                    StringUtil.countDisplayableCharacters("\uD834\uDD1E"), 1);
051    
052            // Combining mark
053            Assert.assertEquals(StringUtil.countDisplayableCharacters("i\u0302"), 1);
054    
055        }
056    }