public async Task CssWithImportRuleShouldBeAbleToHandleNestedStylesheets()
{
var files = new Dictionary<String, String>
{
{ "index.html", "<!doctype html><html><link rel=stylesheet href=origin.css type=text/css><style>@import url('linked2.css');</style>" },
{ "origin.css", "@import url(linked1.css);" },
{ "linked1.css", "" },
{ "linked2.css", "@import url(\"linked3.css\"); @import 'linked4.css';" },
{ "linked3.css", "" },
{ "linked4.css", "" },
};
var requester = new TestServerRequester(files);
var config = Configuration.Default.WithDefaultLoader(setup => setup.IsResourceLoadingEnabled = true, new [] { requester }).WithCss();
var document = await BrowsingContext.New(config).OpenAsync("http://localhost/index.html");
var link = document.QuerySelector<IHtmlLinkElement>("link");
var style = document.QuerySelector<IHtmlStyleElement>("style");
await Task.Delay(100);
Assert.IsNotNull(link);
Assert.IsNotNull(style);
var origin = link.Sheet as ICssStyleSheet;
Assert.IsNotNull(origin);
Assert.AreEqual("http://localhost/origin.css", origin.Href);
Assert.AreEqual(1, origin.Rules.Length);
Assert.AreEqual(CssRuleType.Import, origin.Rules[0].Type);
var linked1 = (origin.Rules[0] as ICssImportRule).Sheet;
Assert.IsNotNull(linked1);
Assert.AreEqual("http://localhost/linked1.css", linked1.Href);
Assert.AreEqual(0, linked1.Rules.Length);
var styleSheet = style.Sheet as ICssStyleSheet;
Assert.IsNotNull(styleSheet);
Assert.AreEqual(null, styleSheet.Href);
Assert.AreEqual(1, styleSheet.Rules.Length);
Assert.AreEqual(CssRuleType.Import, styleSheet.Rules[0].Type);
var linked2 = (styleSheet.Rules[0] as ICssImportRule).Sheet;
Assert.IsNotNull(linked2);
Assert.AreEqual("http://localhost/linked2.css", linked2.Href);
Assert.AreEqual(2, linked2.Rules.Length);
Assert.AreEqual(CssRuleType.Import, linked2.Rules[0].Type);
Assert.AreEqual(CssRuleType.Import, linked2.Rules[1].Type);
var linked3 = (linked2.Rules[0] as ICssImportRule).Sheet;
Assert.IsNotNull(linked3);
Assert.AreEqual("http://localhost/linked3.css", linked3.Href);
Assert.AreEqual(0, linked3.Rules.Length);
var linked4 = (linked2.Rules[1] as ICssImportRule).Sheet;
Assert.IsNotNull(linked4);
Assert.AreEqual("http://localhost/linked4.css", linked4.Href);
Assert.AreEqual(0, linked4.Rules.Length);
}
public async Task CssWithImportRuleShouldStopRecursion()
{
var files = new Dictionary<String, String>
{
{ "index.html", "<!doctype html><html><link rel=stylesheet href=origin.css type=text/css>" },
{ "origin.css", "@import url(linked.css);" },
{ "linked.css", "@import url(origin.css);" },
};
var requester = new TestServerRequester(files);
var config = Configuration.Default.WithDefaultLoader(setup => setup.IsResourceLoadingEnabled = true, new[] { requester }).WithCss();
var document = await BrowsingContext.New(config).OpenAsync("http://localhost/index.html");
var link = document.QuerySelector<IHtmlLinkElement>("link");
await Task.Delay(100);
Assert.IsNotNull(link);
var origin = link.Sheet as ICssStyleSheet;
Assert.IsNotNull(origin);
Assert.AreEqual("http://localhost/origin.css", origin.Href);
Assert.AreEqual(1, origin.Rules.Length);
Assert.AreEqual(CssRuleType.Import, origin.Rules[0].Type);
var linked = (origin.Rules[0] as ICssImportRule).Sheet;
Assert.IsNotNull(linked);
Assert.AreEqual("http://localhost/linked.css", linked.Href);
Assert.AreEqual(1, linked.Rules.Length);
var originAborted = (linked.Rules[0] as ICssImportRule).Sheet;
Assert.IsNull(originAborted);
}