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Test Info:

<!doctype html>
<meta charset="utf-8" />
<meta name="author" title="Keith Cirkel" href="mailto:wpt@keithcirkel.co.uk" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<button id="invoker" invoketarget="invokee"></button>
<div id="invokee"></div>
<script>
test(function () {
assert_equals(invoker.invokeTargetElement, invokee);
}, "invokeTargetElement reflects invokee HTML element");
test(function () {
const div = document.body.appendChild(document.createElement("div"));
invoker.invokeTargetElement = div;
assert_equals(invoker.invokeTargetElement, div);
assert_equals(invoker.getAttribute("invoketarget"), "");
assert_false(invoker.hasAttribute("invokeaction"));
}, "invokeTargetElement reflects set value");
test(function () {
const host = document.body.appendChild(document.createElement("div"));
const shadow = host.attachShadow({ mode: "open" });
const button = shadow.appendChild(document.createElement("button"));
button.invokeTargetElement = invokee;
assert_equals(button.invokeTargetElement, invokee);
assert_equals(invoker.getAttribute("invoketarget"), "");
assert_false(invoker.hasAttribute("invokeaction"));
}, "invokeTargetElement reflects set value across shadow root into light dom");
test(function () {
const host = document.body.appendChild(document.createElement("div"));
const shadow = host.attachShadow({ mode: "open" });
const div = shadow.appendChild(document.createElement("div"));
invoker.invokeTargetElement = div;
assert_equals(invoker.invokeTargetElement, null);
assert_equals(invoker.getAttribute("invoketarget"), "");
assert_false(invoker.hasAttribute("invokeaction"));
}, "invokeTargetElement does not reflect set value inside shadowroot");
test(function () {
assert_throws_js(
TypeError,
function () {
invoker.invokeTargetElement = {};
},
"invokeTargetElement attribute must be an instance of Element",
);
}, "invokeTargetElement throws error on assignment of non Element");
test(function () {
assert_false(invoker.hasAttribute("invokeaction"));
assert_equals(invoker.invokeAction, "");
}, "invokeAction reflects '' when attribute not present");
test(function () {
invoker.setAttribute("invokeaction", "");
assert_equals(invoker.getAttribute("invokeaction"), "");
assert_equals(invoker.invokeAction, "");
}, "invokeAction reflects '' when attribute empty, setAttribute version");
test(function () {
invoker.invokeAction = "fooBarBaz";
assert_equals(invoker.getAttribute("invokeaction"), "fooBarBaz");
assert_equals(invoker.invokeAction, "fooBarBaz");
}, "invokeAction reflects same casing");
test(function () {
invoker.invokeAction = "";
assert_equals(invoker.getAttribute("invokeaction"), "");
assert_equals(invoker.invokeAction, "");
}, "invokeAction reflects '' when attribute empty, IDL version");
test(function () {
invoker.invokeAction = [1, 2, 3];
assert_equals(invoker.getAttribute("invokeaction"), "1,2,3");
assert_equals(invoker.invokeAction, "1,2,3");
}, "invokeAction reflects tostring value");
test(function () {
invoker.invokeAction = [];
assert_equals(invoker.getAttribute("invokeaction"), "");
assert_equals(invoker.invokeAction, "");
}, "invokeAction reflects '' when attribute set to []");
test(function () {
invoker.invokeAction = {};
assert_equals(invoker.invokeAction, "[object Object]");
}, "invokeAction reflects tostring value 2");
</script>