buf.Truncate(20)
		check(t, "TestBasicOperations (8)", &buf, testString[0:20])

		empty(t, "TestBasicOperations (9)", &buf, testString[0:20], make([]byte, 5))
		empty(t, "TestBasicOperations (10)", &buf, "", make([]byte, 100))

		buf.WriteByte(testString[1])
		c, err := buf.ReadByte()
		if want := testString[1]; err != nil || c != want {
			t.Errorf("ReadByte: got (%q, %v), want (%q, %v)", c, err, want, nil)
		}

        container.singleton("stringComponent", "TestString");
        CrawlerPooledObjectFactory<String> stringFactory = new CrawlerPooledObjectFactory<>();
        stringFactory.setCrawlerContainer(container);
        stringFactory.setComponentName("stringComponent");

        String stringComponent = stringFactory.create();
        assertEquals("TestString", stringComponent);