24 lines
992 B
HTML
24 lines
992 B
HTML
<!doctype html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<iframe id="i" src="/common/blank.html"></iframe>
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<body>
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<script>
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promise_test(async t => {
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// Wait for after the load event so that the navigation doesn't get converted
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// into a replace navigation.
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await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
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await i.contentWindow.navigation.navigate("#1").finished;
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i.contentWindow.navigation.onnavigate = t.step_func(e => {
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assert_false(e.cancelable);
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// intercept() with a precommitHandler is forbidden because e.cancelable is false.
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let iframe_constructor = i.contentWindow.DOMException;
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assert_throws_dom("InvalidStateError", iframe_constructor,
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() => e.intercept({ precommitHandler: async () => {} }));
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});
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await i.contentWindow.navigation.back().finished;
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}, "precommitHandler for an uncancelable traverse navigation");
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</script>
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</body>
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