/*
* 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.
*/
package org.apache.commons.lang3;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import org.junit.Assert;
import org.junit.Test;
/**
* Tests CharSequenceUtils
*
* @version $Id: CharSequenceUtilsTest.java 1066341 2011-02-02 06:21:53Z bayard $
*/
public class CharSequenceUtilsTest {
//-----------------------------------------------------------------------
@Test
public void testConstructor() {
assertNotNull(new CharSequenceUtils());
final Constructor<?>[] cons = CharSequenceUtils.class.getDeclaredConstructors();
assertEquals(1, cons.length);
assertTrue(Modifier.isPublic(cons[0].getModifiers()));
assertTrue(Modifier.isPublic(CharSequenceUtils.class.getModifiers()));
assertFalse(Modifier.isFinal(CharSequenceUtils.class.getModifiers()));
}
//-----------------------------------------------------------------------
@Test
public void testSubSequence() {
//
// null input
//
Assert.assertEquals(null, CharSequenceUtils.subSequence(null, -1));
Assert.assertEquals(null, CharSequenceUtils.subSequence(null, 0));
Assert.assertEquals(null, CharSequenceUtils.subSequence(null, 1));
//
// non-null input
//
Assert.assertEquals(StringUtils.EMPTY, CharSequenceUtils.subSequence(StringUtils.EMPTY, 0));
Assert.assertEquals("012", CharSequenceUtils.subSequence("012", 0));
Assert.assertEquals("12", CharSequenceUtils.subSequence("012", 1));
Assert.assertEquals("2", CharSequenceUtils.subSequence("012", 2));
Assert.assertEquals(StringUtils.EMPTY, CharSequenceUtils.subSequence("012", 3));
//
// Exception expected
//
try {
Assert.assertEquals(null, CharSequenceUtils.subSequence(StringUtils.EMPTY, -1));
Assert.fail("Expected " + IndexOutOfBoundsException.class.getName());
} catch (final IndexOutOfBoundsException e) {
// Expected
}
try {
Assert.assertEquals(null, CharSequenceUtils.subSequence(StringUtils.EMPTY, 1));
Assert.fail("Expected " + IndexOutOfBoundsException.class.getName());
} catch (final IndexOutOfBoundsException e) {
// Expected
}
}
}