public void StripAllHtmlParagraphTagsShouldStripAllHtmlParagraphs()
        {
            //Arrange
            string str = "<p>This</p> string contains <p>some</p> html <p>paragraph tags</p>";

            //Act
            string res = ArticleStripper.StripAllHtmlParagraphTags(str);

            //Assert
            Assert.True(res.Equals("This string contains some html paragraph tags"));
        }
        public void StripAllHtmlParagraphTagsShouldNotThrowExceptionWhenInputIsNull()
        {
            //Arrange
            string str = null;

            //Act
            ArticleStripper.StripAllHtmlParagraphTags(str);

            //Assert
            //no exception should be thrown
        }