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function reset() {
location.hash = '';
window.scrollTo(0, 0);
}
function runTests() {
promise_test(async t => {
assert_implements(document.fragmentDirective, 'Text directive not implemented');
reset();
location.hash = 'elementid';
await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
assert_true(isInViewport(document.getElementById('elementid')), 'Scrolled to text');
}, 'Basic element fragment navigation');
// Ensure a simple text directive works correctly when navigated to the
// same document using `location.hash`.
promise_test(async t => {
assert_implements(document.fragmentDirective, 'Text directive not implemented');
reset();
location.hash = ':~:text=line%20of%20text';
await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
assert_true(isInViewport(document.getElementById('text')), 'Scrolled to text');
}, 'Basic text directive navigation');
// Test that we correctly fallback to the element id when we have a text
// directive that doesn't match any text in the page.
promise_test(async t => {
assert_implements(document.fragmentDirective, 'Text directive not implemented');
reset();
location.hash = 'elementid:~:text=textDoesntExist';
await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
assert_true(isInViewport(document.getElementById('elementid')), 'Scrolled to `elementid`');
}, 'Basic element id fallback');
// Test that we correctly fallback to the element id when we have a text
// directive that's malformed and won't be parsed.
promise_test(async t => {
assert_implements(document.fragmentDirective, 'Text directive not implemented');
reset();
location.hash = 'elementid:~:text=,,,,,';
await t.step_wait(() => window.scrollY > 0, "Wait for scroll");
assert_true(isInViewport(document.getElementById('elementid')), 'Scrolled to `elementid`');
}, 'Malformed text directive element id fallback');
}