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promises.push(
test_with_new_window(testWindow => {
// Test calling the HTMLElement constructor.
(() => {
SimpleTest.doesThrow(() => {
testWindow.HTMLElement();
}, "calling the HTMLElement constructor should throw a TypeError");
})();
// Test constructing a HTMLELement.
(() => {
SimpleTest.doesThrow(() => {
new testWindow.HTMLElement();
}, "constructing a HTMLElement should throw a TypeError");
})();
// Test constructing a custom element with defining HTMLElement as entry.
(() => {
testWindow.customElements.define(
"x-defining-html-element",
testWindow.HTMLElement
);
SimpleTest.doesThrow(() => {
new testWindow.HTMLElement();
}, "constructing a custom element with defining HTMLElement as registry " + "entry should throw a TypeError");
})();
// Test calling a custom element constructor and constructing an autonomous
// custom element.
(() => {
let num_constructor_invocations = 0;
class X extends testWindow.HTMLElement {
constructor() {
super();
num_constructor_invocations++;
}
}
testWindow.customElements.define("x-element", X);
SimpleTest.doesThrow(() => {
X();
}, "calling an autonomous custom element constructor should throw a TypeError");
let element = new X();
SimpleTest.is(
Object.getPrototypeOf(Cu.waiveXrays(element)),
X.prototype,
"constructing an autonomous custom element; " +
"the element should be a registered constructor"
);
SimpleTest.is(
element.localName,
"x-element",
"constructing an autonomous custom element; " +
'the element tag name should be "x-element"'
);
SimpleTest.is(
element.namespaceURI,
"constructing an autonomous custom element; " +
"the element should be in the HTML namespace"
);
SimpleTest.is(
element.prefix,
null,
"constructing an autonomous custom element; " +
"the element name should not have a prefix"
);
SimpleTest.is(
element.ownerDocument,
testWindow.document,
"constructing an autonomous custom element; " +
"the element should be owned by the registry's associated " +
"document"
);
SimpleTest.is(
num_constructor_invocations,
1,
"constructing an autonomous custom element; " +
"the constructor should have been invoked once"
);
})();
// Test if prototype is no an object.
(() => {
function ElementWithNonObjectPrototype() {
let o = Reflect.construct(testWindow.HTMLElement, [], new.target);
SimpleTest.is(
Object.getPrototypeOf(Cu.waiveXrays(o)),
window.HTMLElement.prototype,
"constructing an autonomous custom element; " +
"if prototype is not object, fallback from NewTarget's realm"
);
}
// Prototype have to be an object during define(), otherwise define will
// throw an TypeError exception.
ElementWithNonObjectPrototype.prototype = {};
testWindow.customElements.define(
"x-non-object-prototype",
ElementWithNonObjectPrototype
);
ElementWithNonObjectPrototype.prototype = "string";
new ElementWithNonObjectPrototype();
})();
})
);