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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/whatwg/html/issues/10762">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
select, ::picker(select) {
appearance: base-select;
}
</style>
<select id=defaultbutton>
<option class=one>one</option>
<option class=two>two</option>
</select>
<select id=custombutton>
<button>button</button>
<option class=one>one</option>
<option class=two>two</option>
</select>
<script>
const keyCodes = ['Enter', 'Space', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'];
function dispatchKeyboardEvents(element, code) {
const key = code == 'Space' ? ' ' : code;
element.dispatchEvent(new KeyboardEvent('keydown', {key, code}));
element.dispatchEvent(new KeyboardEvent('keypress', {key, code}));
element.dispatchEvent(new KeyboardEvent('keyup', {key, code}));
}
function dispatchMouseEvents(element) {
element.dispatchEvent(new MouseEvent('pointerdown'));
element.dispatchEvent(new MouseEvent('mousedown'));
element.dispatchEvent(new MouseEvent('pointerup'));
element.dispatchEvent(new MouseEvent('mouseup'));
element.dispatchEvent(new MouseEvent('click'));
}
['defaultbutton', 'custombutton'].forEach(id => {
promise_test(async () => {
assert_true(CSS.supports('appearance', 'base-select'),
'This test requires appearance:base-select in order to run.');
const select = document.getElementById(id);
const firstOption = select.querySelector('option.one');
const secondOption = select.querySelector('option.two');
select.click();
assert_false(select.matches(':open'),
'select.click() should not open the picker.');
dispatchMouseEvents(select);
assert_false(select.matches(':open'),
'Synthetic mouse/pointer events should not open the picker.');
for (const keyCode of keyCodes) {
dispatchKeyboardEvents(select, keyCode);
assert_false(select.matches(':open'),
`Synthetic ${keyCode} events should not open the picker.`);
assert_equals(select.value, 'one',
`Synthetic ${keyCode} events should not change the selects value.`);
}
await test_driver.click(select);
assert_true(select.matches(':open'),
'Select should open after a real click occurs.');
assert_equals(document.activeElement, firstOption,
'Selected <option> should be focused after opening the picker.');
secondOption.click();
assert_true(select.matches(':open'),
'option.click() should not close the picker.');
assert_equals(select.value, 'one',
'option.click() should not change select.value.');
dispatchMouseEvents(secondOption);
assert_true(select.matches(':open'),
'Synthetic mouse/pointer events should not close the picker.');
assert_equals(select.value, 'one',
'Synthetic mouse/pointer events should not change select.value.');
for (const keyCode of keyCodes) {
dispatchKeyboardEvents(firstOption, keyCode);
assert_true(select.matches(':open'),
`Synthetic ${keyCode} events on selected <option> should not close the picker.`);
assert_equals(select.value, 'one',
`Synthetic ${keyCode} events on selected <option> should not change select.value.`);
dispatchKeyboardEvents(secondOption, keyCode);
assert_true(select.matches(':open'),
`Synthetic ${keyCode} events on non-selected <option> should not close the picker.`);
assert_equals(select.value, 'one',
`Synthetic ${keyCode} events on non-selected <option> should not change select.value.`);
}
}, `${id}: Synthetic events should not trigger behaviors of select element.`);
});
</script>
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