<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=449781 --> <head> <title>Test for Bug 449781</title> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script type="text/javascript" src="/tests/SimpleTest/WindowSnapshot.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=449781">Mozilla Bug 449781</a> <p id="display">Canary</p> <iframe src="about:blank" id="ourFrame" style="visibility: hidden"> </iframe> </div> <pre id="test"> <script class="testbody" type="text/javascript"> var s1, s2, s3, s4; /** Test for Bug 449781 **/ SimpleTest.waitForExplicitFinish(); addLoadEvent(function() { s1 = snapshotWindow(window); $("ourFrame").style.display = "none"; is($("ourFrame").offsetWidth, 0, "Unexpected width after hiding"); $("ourFrame").style.display = ""; is($("ourFrame").clientWidth, 300, "Unexpected width after showing"); s2 = snapshotWindow(window); var equal, str1, str2; [equal, str1, str2] = compareSnapshots(s1, s2, true); ok(equal, "Show/hide should have no effect", "got " + str1 + " but expected " + str2); var viewer = SpecialPowers.wrap($("ourFrame")).contentWindow .QueryInterface(SpecialPowers.Ci.nsIInterfaceRequestor) .getInterface(SpecialPowers.Ci.nsIWebNavigation) .QueryInterface(SpecialPowers.Ci.nsIDocShell) .contentViewer; viewer.fullZoom = 2; s3 = snapshotWindow(window); [equal, str1, str2] = compareSnapshots(s1, s3, true); ok(equal, "Zoom should have no effect", "got " + str1 + " but expected " + str2); $("display").style.display = "none"; s4 = snapshotWindow(window); [equal, str1, str2] = compareSnapshots(s3, s4, true); ok(!equal, "Should be able to see the canary"); SimpleTest.finish(); }); </script> </pre> </body> </html>