/*
* 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 opennlp.tools.util;
import org.junit.Assert;
import org.junit.Test;
/**
* Tests for the {@link StringUtil} class.
*/
public class StringUtilTest {
@Test
public void testNoBreakSpace() {
Assert.assertTrue(StringUtil.isWhitespace(0x00A0));
Assert.assertTrue(StringUtil.isWhitespace(0x2007));
Assert.assertTrue(StringUtil.isWhitespace(0x202F));
Assert.assertTrue(StringUtil.isWhitespace((char) 0x00A0));
Assert.assertTrue(StringUtil.isWhitespace((char) 0x2007));
Assert.assertTrue(StringUtil.isWhitespace((char) 0x202F));
}
@Test
public void testToLowerCase() {
Assert.assertEquals("test", StringUtil.toLowerCase("TEST"));
Assert.assertEquals("simple", StringUtil.toLowerCase("SIMPLE"));
}
@Test
public void testToUpperCase() {
Assert.assertEquals("TEST", StringUtil.toUpperCase("test"));
Assert.assertEquals("SIMPLE", StringUtil.toUpperCase("simple"));
}
@Test
public void testIsEmpty() {
Assert.assertTrue(StringUtil.isEmpty(""));
Assert.assertTrue(!StringUtil.isEmpty("a"));
}
@Test(expected = NullPointerException.class)
public void testIsEmptyWithNullString() {
// should raise a NPE
StringUtil.isEmpty(null);
}
}