1 files changed, 5 insertions, 8 deletions
diff --git a/editor/libeditor/tests/test_bug966552.html b/editor/libeditor/tests/test_bug966552.html
index 3d0ec5fe3..e18883aad 100644
--- a/editor/libeditor/tests/test_bug966552.html
+++ b/editor/libeditor/tests/test_bug966552.html
@@ -18,13 +18,10 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=966552
 <script class="testbody" type="text/javascript">
 SimpleTest.waitForExplicitFinish();
 
-addLoadEvent(function() {
-  var win = window.open("data:text/html,<body onload=\"document.designMode='on'\">test</body>", "", "test-966552");
-  win.addEventListener("load", function onLoad() {
-    win.removeEventListener("load", onLoad);
-    runTest(win);
-  }, false);
-});
+var win = window.open("file_bug966552.html", "", "test-966552");
+win.addEventListener("load", function() {
+  runTest(win);
+}, {once: true});
 
 function runTest(win) {
   SimpleTest.waitForFocus(function() {
@@ -33,7 +30,7 @@ function runTest(win) {
     doc.body.focus();
     sel.collapse(doc.body.firstChild, 2);
     synthesizeKey("VK_BACK_SPACE", {ctrlKey: true}, win);
-    is(doc.body.textContent, "st");
+    is(doc.body.textContent.trim(), "st");
     win.close();
     SimpleTest.finish();
   }, win);