public void TestClearFormatting()
        {
            HSSFRichTextString r = new HSSFRichTextString("Testing");

            Assert.AreEqual(0, r.NumFormattingRuns);
            r.ApplyFont(2, 4, new HSSFFont((short)1, null));
            Assert.AreEqual(2, r.NumFormattingRuns);
            r.ClearFormatting();
            Assert.AreEqual(0, r.NumFormattingRuns);
        }