@Test
public void testConcatStrings() {

	Assert.assertSame("test1", StringBundler.concat("test1"));
	Assert.assertSame(
		StringPool.NULL, StringBundler.concat(new String[] {null}));
	Assert.assertEquals(
		"test1test2", StringBundler.concat("test1", "test2"));
	Assert.assertEquals("abcdef", StringBundler.concat("a", "bc", "def"));
	Assert.assertEquals("abcdef", StringBundler.concat("abc", "de", "f"));
	Assert.assertEquals(
		"test1test2test3test4",
		StringBundler.concat("test1", "test2", "test3", "test4"));
}