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// Usage note: if you use these more than once in a given file, be sure to
// clean up any navigate event listeners, e.g. by using { once: true }, between
// tests.
const TAB_KEY = "\uE004";
export function testFocusWasReset(setupFunc, description) {
promise_test(async t => {
setupFunc(t);
const button = document.body.appendChild(document.createElement("button"));
const button2 = document.body.appendChild(document.createElement("button"));
button2.tabIndex = 0;
t.add_cleanup(() => {
button.remove();
button2.remove();
});
assert_equals(document.activeElement, document.body, "Start on body");
button.focus();
assert_equals(document.activeElement, button, "focus() worked");
const { committed, finished } = navigation.navigate("#" + location.hash.substring(1) + "1");
await committed;
assert_equals(document.activeElement, button, "Focus stays on the button during the transition");
await finished.catch(() => {});
assert_equals(document.activeElement, document.body, "Focus reset after the transition");
button2.onfocus = t.unreached_func("button2 must not be focused after pressing Tab");
const focusPromise = waitForFocus(t, button);
await test_driver.send_keys(document.body, TAB_KEY);
await focusPromise;
}, description);
}
export function testFocusWasNotReset(setupFunc, description) {
promise_test(async t => {
setupFunc(t);
const button = document.body.appendChild(document.createElement("button"));
const button2 = document.body.appendChild(document.createElement("button"));
button2.tabIndex = 0;
t.add_cleanup(() => {
button.remove();
button2.remove();
});
assert_equals(document.activeElement, document.body, "Start on body");
button.focus();
assert_equals(document.activeElement, button, "focus() worked");
const { committed, finished } = navigation.navigate("#" + location.hash.substring(1) + "1");
await committed;
assert_equals(document.activeElement, button, "Focus stays on the button during the transition");
await finished.catch(() => {});
assert_equals(document.activeElement, button, "Focus stays on the button after the transition");
button.onfocus = t.unreached_func("button must not be focused after pressing Tab");
const focusPromise = waitForFocus(t, button2);
await test_driver.send_keys(document.body, TAB_KEY);
await focusPromise;
}, description);
}
function waitForFocus(t, target) {
return new Promise(resolve => {
target.addEventListener("focus", () => resolve(), { once: true });
});
}