layout/style/test/browser_sourcemap.js

   1 add_task(async function () {
   2   let uri = "http://example.com/browser/layout/style/test/sourcemap_css.html";
   3   info(`URI is ${uri}`);
   4
   5   await BrowserTestUtils.withNewTab(
   6     {
   7       gBrowser,
   8       url: uri,
   9     },
  10     async function (browser) {
  11       await SpecialPowers.spawn(browser, [], function () {
  12         let seenSheets = 0;
  13
  14         for (let i = 0; i < content.document.styleSheets.length; ++i) {
  15           let sheet = content.document.styleSheets[i];
  16
  17           info(`Checking ${sheet.href}`);
  18           if (/mapped\.css/.test(sheet.href)) {
  19             is(
  20               sheet.sourceMapURL,
  21               "mapped.css.map",
  22               "X-SourceMap header took effect"
  23             );
  24             seenSheets |= 1;
  25           } else if (/mapped2\.css/.test(sheet.href)) {
  26             is(
  27               sheet.sourceMapURL,
  28               "mapped2.css.map",
  29               "SourceMap header took effect"
  30             );
  31             seenSheets |= 2;
  32           } else {
  33             ok(false, "sheet does not have source map URL");
  34           }
  35         }
  36
  37         is(seenSheets, 3, "seen all source-mapped sheets");
  38       });
  39     }
  40   );
  41 });