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  • This WPT test may be referenced by the following Test IDs:
<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
var t = async_test("Test that the child iframe navigation is allowed");
window.onmessage = t.step_func_done(function(e) {
assert_equals(, 'success');
// the iframe will navigate to:
// [www2]/..../ (which is not in the navigate-to source list) which will in turn navigate to
// [www1]/..../post_message_to_frame_owner.html which is not exactly in
// the list but the check should be reduced to an origin check since there has been a redirect.
// Because of 'unsafe-allow-redirects' only the second one is checked since the first is a redirect
var i = document.createElement('iframe');
i.src = "../support/link_click_navigation.sub.html" +
"?csp=" + encodeURIComponent("navigate-to {{location[scheme]}}://{{domains[www1]}}:{{location[port]}}/some-path/ 'unsafe-allow-redirects'") +
"&target=" + encodeURIComponent("{{location[scheme]}}://{{domains[www2]}}:{{location[port]}}/common/" +