/// <summary>
/// Calculates number of external links in a webpage.
/// </summary>
/// <returns>Dictionary of external link.</returns>
public override Dictionary <string, int> CalculateExternalLink()
{
if (htmlPage == null)
{
var htmlWeb = new HtmlWeb();
var lastStatusCode = HttpStatusCode.OK;
htmlWeb.PostResponse = (request, response) =>
{
if (response != null)
{
lastStatusCode = response.StatusCode;
}
};
htmlPage = htmlWeb.Load(Input);
if (lastStatusCode != HttpStatusCode.OK)
{
throw new Exception($"{Constant.WEB_REQUEST_ERROR_MESSAGE} {lastStatusCode}");
}
}
var hrefNodeCollection = htmlPage.DocumentNode.SelectNodes("//a[@href]");
return(CoreUtil.ProcessExternalLink(hrefNodeCollection, Input));
}
public void ProcessExternalLink_WithEmptyText_ReturnDictionaryOfExternalLink(string input)
{
//arrange
var expected = new Dictionary <string, int>(StringComparer.InvariantCultureIgnoreCase);
//act
var actual = CoreUtil.ProcessExternalLink(input);
//assert
Assert.AreEqual(actual, expected);
Assert.IsEmpty(actual);
}
public void ProcessExternalLink_WithEnglishText_ReturnDictionaryOfExternalLink(string input)
{
//arrange
var expected = new Dictionary <string, int>(StringComparer.InvariantCultureIgnoreCase)
{
{ "http://www.google.com", 1 },
{ "https://www.google.com", 2 }
};
//act
var actual = CoreUtil.ProcessExternalLink(input);
//assert
Assert.AreEqual(actual, expected);
}
public void ProcessExternalLink_onURLAnalyserWithRelativeOrAbsoluteUrl_ReturnDictionaryOfExternalLink(string html, string baseUrl)
{
//arrange
var expected = new Dictionary <string, int>(StringComparer.InvariantCultureIgnoreCase)
{
{ "https://www.google.com/", 1 },
{ "https://www.w3schools.com/cs/exercise.asp?filename=exercise_syntax1", 1 }
};
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
HtmlNodeCollection nodes = doc.DocumentNode.SelectNodes("//html//a");
//act
var actual = CoreUtil.ProcessExternalLink(nodes, baseUrl);
//assert
Assert.AreEqual(actual, expected);
}
/// <summary> /// Calculates number of external links in a english text. /// </summary> /// <returns>Dictionary of external link.</returns> public override Dictionary <string, int> CalculateExternalLink() => CoreUtil.ProcessExternalLink(Input);
