public void GetWordsSummary_GivenWebsiteTextIsEmpty_ExpectEmptySummary()
        {
            m_HtmlAgilityPackWrapperMock.Setup(wrapper => wrapper.GetVisibleText(WEBSITE))
            .Returns(String.Empty);

            var wordSummary = m_WordsHandler.GetWordsSummary(WEBSITE);

            Assert.That(wordSummary.WordsCount, Is.EqualTo(0));
            Assert.That(wordSummary.OccurringWordsDictionary, Is.Null);
        }