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+<html>
+<head>
+ <title>Test for Bug 1230665</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script src="/tests/SimpleTest/EventUtils.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<script>
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(function() {
+ document.getElementById("flexbutton1").focus();
+ synthesizeKey("KEY_Tab");
+ var e = document.getElementById("flexbutton2");
+ is(document.activeElement, e, "focus in flexbutton2 after TAB");
+
+ document.getElementById("gridbutton1").focus();
+ synthesizeKey("KEY_Tab");
+ e = document.getElementById("gridbutton2");
+ is(document.activeElement, e, "focus in gridbutton2 after TAB");
+
+ SimpleTest.finish();
+});
+
+</script>
+
+<div tabindex="0" style="display:flex">
+ <button id="flexbutton1"></button>
+ text <!-- this text will force a :-moz-anonymous-flex-item frame -->
+ <div style="">
+ <button id="flexbutton2"></button>
+ </div>
+</div>
+
+
+<div tabindex="0" style="display:grid">
+ <button id="gridbutton1"></button>
+ text <!-- this text will force a :-moz-anonymous-grid-item frame -->
+ <div style="">
+ <button id="gridbutton2"></button>
+ </div>
+</div>
+
+</body>
+</html>