package org.skywalking.apm.util;
import org.junit.Assert;
import org.junit.Test;
/**
* Created by wusheng on 2017/2/27.
*/
public class StringUtilTest {
@Test
public void testIsEmpty() {
Assert.assertTrue(StringUtil.isEmpty(null));
Assert.assertTrue(StringUtil.isEmpty(""));
Assert.assertFalse(StringUtil.isEmpty(" "));
Assert.assertFalse(StringUtil.isEmpty("A String"));
}
@Test
public void testJoin() {
Assert.assertNull(StringUtil.join('.'));
Assert.assertEquals("Single part.", StringUtil.join('.', "Single part."));
Assert.assertEquals("part1.part2.p3", StringUtil.join('.', "part1", "part2", "p3"));
}
}