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diff --git a/dom/security/test/general/test_block_toplevel_data_navigation.html b/dom/security/test/general/test_block_toplevel_data_navigation.html
new file mode 100644
index 000000000..fc91f2ec0
--- /dev/null
+++ b/dom/security/test/general/test_block_toplevel_data_navigation.html
@@ -0,0 +1,90 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Bug 1331351 - Block top level window data: URI navigations</title>
+  <!-- Including SimpleTest.js so we can use waitForExplicitFinish !-->
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<script class="testbody" type="text/javascript">
+SpecialPowers.setBoolPref("security.data_uri.block_toplevel_data_uri_navigations", true);
+SimpleTest.registerCleanupFunction(() => {
+  SpecialPowers.clearUserPref("security.data_uri.block_toplevel_data_uri_navigations");
+});
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("have to test that top level data: URI navgiation is blocked");
+
+function test1() {
+  // simple data: URI click navigation should be prevented
+  let TEST_FILE = "file_block_toplevel_data_navigation.html";
+  let win1 = window.open(TEST_FILE);
+  var readyStateCheckInterval = setInterval(function() {
+    let state = win1.document.readyState;
+    if (state === "interactive" || state === "complete") {
+      clearInterval(readyStateCheckInterval);
+      ok(win1.document.body.innerHTML.indexOf("test1:") !== -1,
+         "toplevel data: URI navigation through click() should be blocked");
+      win1.close();
+      test2();
+    }
+  }, 200);
+}
+
+function test2() {
+  // data: URI in iframe which opens data: URI in _blank should be blocked 
+  let win2 = window.open("file_block_toplevel_data_navigation2.html");
+  window.addEventListener("message", receiveMessage);
+  function receiveMessage(event) {
+    window.removeEventListener("message", receiveMessage);
+    is(event.data, "blocked",
+      "data: URI navigation using _blank from data: URI should be blocked");
+    win2.close();
+    test3();
+  }
+}
+
+function test3() {
+  // navigating to a data: URI using window.location.href should be blocked
+  let win3 = window.open("file_block_toplevel_data_navigation3.html");
+  setTimeout(function () {
+    ok(win3.document.body.innerHTML.indexOf("test3:") !== -1,
+      "data: URI navigation through win.loc.href should be blocked");
+    win3.close();
+    test4();
+  }, 1000);
+}
+
+function test4() {
+  // navigating to a data: URI using window.open() should be blocked
+  let win4 = window.open("data:text/html,<body>toplevel data: URI navigations should be blocked</body>");
+  setTimeout(function () {
+    // Please note that the data: URI will be displayed in the URL-Bar but not
+    // loaded, hence we rather rely on document.body than document.location
+    is(win4.document.body.innerHTML, "",
+      "navigating to a data: URI using window.open() should be blocked");
+    test5();
+  }, 1000);
+}
+
+function test5() {
+  // navigating to a URI which redirects to a data: URI using window.open() should be blocked
+  let win5 = window.open("file_block_toplevel_data_redirect.sjs");
+  setTimeout(function () {
+    // Please note that the data: URI will be displayed in the URL-Bar but not
+    // loaded, hence we rather rely on document.body than document.location
+    is(SpecialPowers.wrap(win5).document.body.innerHTML, "",
+      "navigating to URI which redirects to a data: URI using window.open() should be blocked");
+    win5.close();
+    SimpleTest.finish();
+  }, 1000);
+}
+
+// fire up the tests
+test1();
+
+</script>
+</body>
+</html>