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let firstEventHandler;
test(t => {
var i = 0;
firstEventHandler = t.unreached_func('First event handler.');
var uncalled = "firstEventHandler();";
var button = document.createElement('button');
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 1) }), false);
button.setAttribute('onclick', uncalled); // event handler is activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 2) }), false);
button.onclick = null; // but de-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 3) }), false);
button.onclick = t.step_func(() => { assert_equals(++i, 4); }); // and re-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 5) }), false);
button.click()
assert_equals(button.getAttribute("onclick"), uncalled)
assert_equals(i, 5);
}, "Event handler set through content attribute should be removed when they are set to null.");
let happened = 0;
test(() => {
var script = "happened++;";
var button = document.createElement('button');
button.setAttribute('onclick', script); // event handler is activated here
button.onclick = null; // but de-activated here
assert_equals(button.getAttribute("onclick"), script)
button.setAttribute('onclick', script); // and re-activated here
button.click()
assert_equals(happened, 1);
}, "Event handler set through content attribute should be re-activated even if content is the same.");
test(t => {
var i = 0;
firstEventHandler = t.unreached_func('First event handler.');
var uncalled = "firstEventHandler();";
var button = document.createElement('button');
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 1) }), false);
button.setAttribute('onclick', uncalled); // event handler is activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 2) }), false);
button.removeAttribute('onclick'); // but de-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 3) }), false);
button.onclick = t.step_func(() => { assert_equals(++i, 4); }); // and re-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 5) }), false);
button.click()
assert_equals(i, 5);
}, "Event handler set through content attribute should be deactivated when the content attribute is removed.");
test(t => {
var i = 0;
firstEventHandler = t.unreached_func('First event handler.');
var uncalled = "firstEventHandler();";
var button = document.createElement('button');
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 1) }), false);
button.onclick = t.unreached_func('First event handler.'); // event handler is activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 2) }), false);
button.onclick = null; // but de-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 3) }), false);
button.onclick = t.step_func(() => { assert_equals(++i, 4); }); // and re-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 5) }), false);
button.click()
assert_equals(i, 5);
}, "Event handler set through IDL should be deactivated when the IDL attribute is set to null.");
test(t => {
var i = 0;
firstEventHandler = t.unreached_func('First event handler.');
var uncalled = "firstEventHandler();";
var button = document.createElement('button');
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 1) }), false);
button.onclick = t.unreached_func('First event handler.'); // event handler is activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 3) }), false);
button.removeAttribute('onclick'); // and NOT de-activated here
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 4) }), false);
button.onclick = t.step_func(() => { assert_equals(++i, 2); });
button.addEventListener('click', t.step_func(() => { assert_equals(++i, 5) }), false);
button.click()
assert_equals(i, 5);
}, "Event handler set through IDL should NOT be deactivated when the content attribute is removed.");
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