/// <summary>
/// Applies all tests.
/// </summary>
/// <returns>The test instance.</returns>
public CssSelectorTest Run()
{
Console.WriteLine("Running tests ...");
var totalTime = 0L;
for (int i = 0; i < _tests.Count; i++)
{
var test = _tests[i];
var result = _doc.QuerySelectorAll(test).Length;
var sw = Stopwatch.StartNew();
for (int j = 0; j < n; j++)
{
_doc.QuerySelectorAll(test);
}
sw.Stop();
var time = sw.ElapsedMilliseconds / n;
totalTime += time;
Console.WriteLine("\t{0}\t{1}\t( {2} ms )", test.PadRight(25), result.ToString().PadLeft(4), time);
}
Console.WriteLine("... finished [ {0} ms ] !", totalTime);
return(this);
}
public void CSSSelectorUsageTest()
{
// Prepare HTML code
var code = @"
<div class='happy'>
<div>
<span>Hello</span>
</div>
</div>
<p class='happy'>
<span>World!</span>
</p>
";
// Initialize a document based on the prepared code
using (var document = new HTMLDocument(code, "."))
{
// Here we create a CSS Selector that extract all elements whose 'class' attribute equals to 'happy' and their child SPAN elements
var elements = document.QuerySelectorAll(".happy span");
// Iterate over the resulted list of elements
foreach (HTMLElement element in elements)
{
Output.WriteLine(element.InnerHTML);
// output: Hello
// output: World!
}
Assert.Equal("HTML", document.DocumentElement.TagName);
}
}
void ChangeQuery()
{
if (document == null)
{
return;
}
State = Brushes.LightGreen;
try
{
ProfilerViewModel.Data.Start("Query", OxyPlot.OxyColors.SteelBlue);
var sw = Stopwatch.StartNew();
var elements = document.QuerySelectorAll(query);
sw.Stop();
ProfilerViewModel.Data.Stop();
source.Clear();
foreach (var element in elements)
{
source.Add(element);
}
State = Brushes.White;
Time = sw.ElapsedMilliseconds;
Result = elements.Length;
}
catch (DOMException)
{
State = Brushes.LightPink;
}
}
public void NetworkServiceTest()
{
// Prepare HTML code and save it to a file
var code = "<img src=\"https://docs.aspose.com/svg/net/drawing-basics/filters-and-gradients/park.jpg\" >\r\n" +
"<img src=\"https://docs.aspose.com/html/net/missing1.jpg\" >\r\n" +
"<img src=\"https://docs.aspose.com/html/net/missing2.jpg\" >\r\n";
File.WriteAllText(Path.Combine(OutputDir, "network-service.html"), code);
// Create an instance of Configuration
using (var configuration = new Configuration())
{
// Add the LogMessageHandler to the chain of existing message handlers
var networkService = configuration.GetService <INetworkService>();
var logHandler = new LogMessageHandler();
networkService.MessageHandlers.Add(logHandler);
// Initialize an HTML document with specified configuration
using (var document = new HTMLDocument(Path.Combine(OutputDir, "network-service.html"), configuration))
{
//Convert HTML to PNG
Converter.ConvertHTML(document, new ImageSaveOptions(), Path.Combine(OutputDir, "network-service_out.png"));
// Print the List of ErrorMessages
foreach (string errorMessage in logHandler.ErrorMessages)
{
Output.WriteLine(errorMessage);
}
Assert.False(document.QuerySelectorAll("img").Length > 3);
}
}
}
public void XPathQueryUsageTest()
{
// Prepare an HTML code
var code = @"
<div class='happy'>
<div>
<span>Hello!</span>
</div>
</div>
<p class='happy'>
<span>World</span>
</p>
";
// Initialize a document based on the prepared code
using (var document = new HTMLDocument(code, "."))
{
// Here we evaluate the XPath expression where we select all child SPAN elements from elements whose 'class' attribute equals to 'happy':
var result = document.Evaluate("//*[@class='happy']//span",
document,
null,
XPathResultType.Any,
null);
// Iterate over the resulted nodes
for (Node node; (node = result.IterateNext()) != null;)
{
Output.WriteLine(node.TextContent);
// output: Hello
// output: World!
}
Assert.True(document.QuerySelectorAll("div").Length > 0);
}
}
public void SandboxingTest()
{
// Prepare HTML code and save it to a file
var code = "<span>Hello World!!</span> " +
"<script>document.write('Have a nice day!');</script>";
File.WriteAllText(Path.Combine(OutputDir, "sandboxing.html"), code);
// Create an instance of Configuration
using (var configuration = new Configuration())
{
// Mark 'scripts' as an untrusted resource
configuration.Security |= Sandbox.Scripts;
// Initialize an HTML document with specified configuration
using (var document = new HTMLDocument(Path.Combine(OutputDir, "sandboxing.html"), configuration))
{
// Convert HTML to PDF
Converter.ConvertHTML(document, new PdfSaveOptions(), Path.Combine(OutputDir, "sandboxing_out.pdf"));
Assert.True(document.QuerySelectorAll("script").Length > 0);
}
Assert.True(File.Exists(Path.Combine(OutputDir, "sandboxing_out.pdf")));
}
}
public void ExternalCSSTest()
{
// Create an instance of HTML document with specified content
var htmlContent = "<link rel=\"stylesheet\" href=\"https://docs.aspose.com/html/net/editing-a-document/external.css\" type=\"text/css\" />\r\n" +
"<div class=\"rect1\" ></div>\r\n" +
"<div class=\"rect2\" ></div>\r\n" +
"<div class=\"frame\">\r\n" +
"<p style=\"font-size:2.5em; color:#ae4566;\"> External CSS </p>\r\n" +
"<p class=\"rect3\"> An external CSS can be created once and applied to multiple web pages</p></div>\r\n";
using (var document = new HTMLDocument(htmlContent, "."))
{
// Save the HTML document to a file
document.Save(Path.Combine(OutputDir, "external-css.html"));
// Create the instance of the PDF output device and render the document into this device
using (var device = new PdfDevice(Path.Combine(OutputDir, "external-css.pdf")))
{
// Render HTML to PDF
document.RenderTo(device);
}
Assert.True(document.QuerySelectorAll("link").Length > 0);
}
Assert.True(File.Exists(Path.Combine(OutputDir, "external-css.html")));
}
public void SaveHTMLWithLinkedFileTest()
{
// Prepare an output path for an HTML document
string documentPath = Path.Combine(OutputDir, "save-with-linked-file.html");
// Prepare a simple HTML file with a linked document
File.WriteAllText(documentPath, "<p>Hello World!</p>" +
"<a href='linked.html'>linked file</a>");
// Prepare a simple linked HTML file
File.WriteAllText(Path.Combine(OutputDir, "linked.html"), "<p>Hello linked file!</p>");
// Load the "save-with-linked-file.html" into memory
using (var document = new HTMLDocument(documentPath))
{
// Create a save options instance
var options = new HTMLSaveOptions();
// The following line with value '0' cuts off all other linked HTML-files while saving this instance
// If you remove this line or change value to the '1', the 'linked.html' file will be saved as well to the output folder
options.ResourceHandlingOptions.MaxHandlingDepth = 1;
// Save the document with the save options
document.Save(Path.Combine(OutputDir, "save-with-linked-file_out.html"), options);
Assert.True(document.QuerySelectorAll("p").Length > 0);
}
Assert.True(File.Exists(documentPath));
}
public void EditInternalCSSTest()
{
// Create an instance of an HTML document with specified content
var content = "<div><p>Internal CSS</p><p>An internal CSS is used to define a style for a single HTML page</p></div>";
using (var document = new HTMLDocument(content, "."))
{
var style = document.CreateElement("style");
style.TextContent = ".frame1 { margin-top:50px; margin-left:50px; padding:20px; width:360px; height:90px; background-color:#a52a2a; font-family:verdana; color:#FFF5EE;} \r\n" +
".frame2 { margin-top:-90px; margin-left:160px; text-align:center; padding:20px; width:360px; height:100px; background-color:#ADD8E6;}";
// Find the document header element and append the style element to the header
var head = document.GetElementsByTagName("head").First();
head.AppendChild(style);
// Find the first paragraph element to inspect the styles
var paragraph = (HTMLElement)document.GetElementsByTagName("p").First();
paragraph.ClassName = "frame1";
// Find the last paragraph element to inspect the styles
var lastParagraph = (HTMLElement)document.GetElementsByTagName("p").Last();
lastParagraph.ClassName = "frame2";
// Set a color to the first paragraph
paragraph.Style.FontSize = "250%";
paragraph.Style.TextAlign = "center";
// Set a font-size to the last paragraph
lastParagraph.Style.Color = "#434343";
lastParagraph.Style.FontSize = "150%";
lastParagraph.Style.FontFamily = "verdana";
// Save the HTML document to a file
document.Save(Path.Combine(OutputDir, "edit-internal-css.html"));
// Create the instance of the PDF output device and render the document into this device
using (var device = new PdfDevice(Path.Combine(OutputDir, "edit-internal-css.pdf")))
{
// Render HTML to PDF
document.RenderTo(device);
}
Assert.True(document.QuerySelectorAll("style").Length > 0);
Assert.True(File.Exists(Path.Combine(OutputDir, "edit-internal-css.pdf")));
Assert.True(File.Exists(Path.Combine(OutputDir, "edit-internal-css.html")));
}
}
public void SaveHTMLToMDTest()
{
// Prepare an output path for a document saving
string documentPath = Path.Combine(OutputDir, "save-to-MD.md");
// Prepare HTML code
var html_code = "<H2>Hello World!</H2>";
// Initialize a document from a string variable
using (var document = new HTMLDocument(html_code, "."))
{
// Save the document as a Markdown file
document.Save(documentPath, HTMLSaveFormat.Markdown);
Assert.True(document.QuerySelectorAll("H2").Length > 0);
}
Assert.True(File.Exists(documentPath));
}
public void SaveHTMLToFileTest()
{
// Prepare an output path for a document saving
string documentPath = Path.Combine(OutputDir, "save-to-file.html");
// Initialize an empty HTML document
using (var document = new HTMLDocument())
{
// Create a text element and add it to the document
var text = document.CreateTextNode("Hello World!");
document.Body.AppendChild(text);
// Save the HTML document to the file on a disk
document.Save(documentPath);
Assert.True(document.QuerySelectorAll("body").Length > 0);
}
Assert.True(File.Exists(documentPath));
}
public void LoadDocumentFromStreamTest()
{
// Create a memory stream object
using (var mem = new MemoryStream())
using (var sw = new StreamWriter(mem))
{
// Write the HTML Code into memory object
sw.Write("<p>Hello World! I love HTML!</p>");
// It is important to set the position to the beginning, since HTMLDocument starts the reading exactly from the current position within the stream
sw.Flush();
mem.Seek(0, SeekOrigin.Begin);
// Initialize a document from the string variable
using (var document = new HTMLDocument(mem, "."))
{
// Save the document to disk
document.Save(Path.Combine(OutputDir, "load-from-stream.html"));
Assert.True(document.QuerySelectorAll("p").Length > 0);
}
}
}
public void SaveHTMLToMHTMLTest()
{
// Prepare an output path for a document saving
string savePath = Path.Combine(OutputDir, "save-to-MHTML.mht");
// Prepare a simple HTML file with a linked document
File.WriteAllText("save-to-MHTML.html", "<p>Hello World!</p>" +
"<a href='linked-file.html'>linked file</a>");
// Prepare a simple linked HTML file
File.WriteAllText("linked-file.html", "<p>Hello linked file!</p>");
// Load the "save-to-MTHML.html" into memory
using (var document = new HTMLDocument("save-to-MHTML.html"))
{
// Save the document to MHTML format
document.Save(savePath, HTMLSaveFormat.MHTML);
Assert.True(document.QuerySelectorAll("a").Length > 0);
}
Assert.True(File.Exists(savePath));
}
public void QuerySelectorAllClass()
{
var qsa = document.QuerySelectorAll(".testClass");
Assert.AreEqual(2, qsa.Length);
}
HTMLCollection RunQuery(string query)
{
return(document.QuerySelectorAll(query));
}