CODEWITHSUNDEEP
c#htmlhtml-agility-pack
tig
tig

Reputation: 3483

Test HTML created by HtmlAgility Pack is valid

I want to make sure the HTML that I generate with the HtmlAgility pack is valid HTML5.

For example, the following creates an empty HTML5 document. I will have other, simliar functions that will create more complex documents. I want tests that verify that I didn't screw something up and the resulting HTML is well formed and valid. 

public static String CreateEmptyHtmlDoc()
{
    var hd = new HtmlDocument();
    var doctype = hd.DocumentNode.SelectSingleNode("/comment()[starts-with(.,'<!DOCTYPE')]");
    if (doctype == null)
        doctype = hd.DocumentNode.PrependChild(hd.CreateComment());
    doctype.InnerHtml = "";

    hd.DocumentNode.AppendChild(
      HtmlNode.CreateNode(
        "<HTML><HEAD><META CHARSET=\"UTF-8\"><TITLE></TITLE></HEAD><BODY></BODY></HTML>"));
    return hd.DocumentNode.OuterHtml;
}

How would I build a "html5 validator" using HtmlAgility Pack where I could do something like this:

Assert.IsTrue(IsValidHtml5(CreateEmptyHtmlDoc()));

Thanks.

Upvotes: 4

Views: 759

Answers (1)

Eric J.
Eric J.

Reputation: 150148

w3c offers a free online validator. You could write a wrapper that submits your generated document for validation. Validate by Direct Input would probably be the easiest option to automate. HTML5 validation is experimental. Check their terms of service if you do this at scale.

http://validator.w3.org/#validate_by_input+with_options

validator.nu offers a similar service with a RESTful API.

Upvotes: 3

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