| Index: LayoutTests/imported/web-platform-tests/html/browsers/the-window-object/window-indexed-properties-strict.html
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| diff --git a/LayoutTests/imported/web-platform-tests/html/browsers/the-window-object/window-indexed-properties-strict.html b/LayoutTests/imported/web-platform-tests/html/browsers/the-window-object/window-indexed-properties-strict.html
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..b49f49c1d6c82a430c6a8a09e7b1ccaa8d5c6377
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| --- /dev/null
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| +++ b/LayoutTests/imported/web-platform-tests/html/browsers/the-window-object/window-indexed-properties-strict.html
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| @@ -0,0 +1,43 @@
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| +<!doctype html>
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| +<meta charset=utf-8>
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| +<title>Indexed properties of the window object (strict mode)</title>
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| +<link rel="author" title="Ms2ger" href="ms2ger@gmail.com">
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| +<link rel="help" href="https://html.spec.whatwg.org/multipage/#window">
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| +<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-window-item">
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| +<link rel="help" href="https://heycam.github.io/webidl/#getownproperty">
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| +<link rel="help" href="https://heycam.github.io/webidl/#defineownproperty">
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| +<script src="../../../../../resources/testharness.js"></script>
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| +<script src="../../../../../resources/testharnessreport.js"></script>
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| +<div id=log></div>
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| +<iframe></iframe>
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| +<script>
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| +test(function() {
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| +  "use strict";
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| +  assert_false("-1" in window, "-1 not in window");
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| +  assert_equals(window[-1], undefined);
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| +  window[-1] = "foo";
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| +  assert_equals(window[-1], "foo");
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| +});
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| +test(function() {
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| +  "use strict";
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| +  assert_throws(new TypeError(), function() {
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| +    window[0] = "foo";
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| +  });
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| +  assert_equals(window[0],
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| +                document.getElementsByTagName("iframe")[0].contentWindow);
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| +});
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| +test(function() {
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| +  "use strict";
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| +  assert_throws(new TypeError(), function() {
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| +    window[1] = "foo";
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| +  });
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| +  assert_equals(window[1], undefined);
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| +});
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| +test(function() {
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| +  "use strict";
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| +  var proto = Window.prototype;
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| +  [-1, 0, 1].forEach(function(idx) {
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| +    assert_false(idx in proto, idx + " in proto");
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| +  });
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| +});
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| +</script>
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| 
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