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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>
<script>
async_test(t => {
// Wait for after the load event so that the navigation doesn't get converted
// into a replace navigation.
window.onload = () => t.step_timeout(t.step_func_done(() => {
// Remove the entry by replacing it.
let replaced_entry = navigation.currentEntry;
assert_equals(replaced_entry.index, 0);
navigation.navigate("#0", { history: "replace" });
assert_equals(replaced_entry.index, -1);
// Remove the entry by detaching its window.
let iframe_entry = i.contentWindow.navigation.currentEntry;
assert_equals(iframe_entry.index, 0);
i.remove();
assert_equals(iframe_entry.index, -1);
t.done();
}), 0);
}, "entry.index should return -1 when not in navigation.entries()");
</script>
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