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"use strict";
// For now this only has per-Window tests, but we could expand it to also test per-Document
window.testIsPerWindow = propertyName => {
test(t => {
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
const frame = iframe.contentWindow;
const before = frame[propertyName];
assert_true(before !== undefined && before !== null, `window.${propertyName} must be implemented`);
iframe.remove();
const after = frame[propertyName];
assert_equals(after, before, `window.${propertyName} should not change after iframe.remove()`);
}, `Discarding the browsing context must not change window.${propertyName}`);
async_test(t => {
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
const frame = iframe.contentWindow;
const before = frame[propertyName];
assert_true(before !== undefined && before !== null, `window.${propertyName} must be implemented`);
// Note: cannot use step_func_done for this because it might be called twice, per the below comment.
iframe.onload = t.step_func(() => {
if (frame.location.href === "about:blank") {
// Browsers are not reliable on whether about:blank fires the load event; see
// https://github.com/whatwg/html/issues/490
return;
}
const after = frame[propertyName];
assert_equals(after, before);
t.done();
});
iframe.src = "/common/blank.html";
}, `Navigating from the initial about:blank must not replace window.${propertyName}`);
// Per spec, document.open() should not change any of the Window state.
async_test(t => {
const iframe = document.createElement("iframe");
iframe.onload = t.step_func_done(() => {
const frame = iframe.contentWindow;
const before = frame[propertyName];
assert_true(before !== undefined && before !== null, `window.${propertyName} must be implemented`);
frame.document.open();
const after = frame[propertyName];
assert_equals(after, before);
frame.document.close();
});
iframe.src = "/common/blank.html";
document.body.appendChild(iframe);
}, `document.open() must replace window.${propertyName}`);
};
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