The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

  * http://creativecommons.org/publicdomain/zero/1.0/

  */

 let content = "line 1\nline 2\nline 3";

 let runningPlainText = false;

 function test() {

   waitForExplicitFinish();

   testViewSourceWindow("data:text/html," + encodeURIComponent(content), checkViewSource, function() {

     testViewSourceWindow("data:text/plain," + encodeURIComponent(content), checkViewSource, finish);

   });

 }

 function checkViewSource(aWindow) {

   is(aWindow.gBrowser.contentDocument.body.textContent, content, "Correct content loaded");

   let selection = aWindow.gBrowser.contentWindow.getSelection();

   let statusPanel = aWindow.document.getElementById("statusbar-line-col");

   is(statusPanel.getAttribute("label"), "", "Correct status bar text");

   for (let i = 1; i <= 3; i++) {

     aWindow.goToLine(i);

     is(selection.toString(), "line " + i, "Correct text selected");

     is(statusPanel.getAttribute("label"), "Line " + i + ", Col 1", "Correct status bar text");

   }

 }