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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertStringIncludes } from "./test_util.ts";
Deno.test(function eventInitializedWithType() {
const type = "click";
const event = new Event(type);
assertEquals(event.isTrusted, false);
assertEquals(event.target, null);
assertEquals(event.currentTarget, null);
assertEquals(event.type, "click");
assertEquals(event.bubbles, false);
assertEquals(event.cancelable, false);
});
Deno.test(function eventInitializedWithTypeAndDict() {
const init = "submit";
const eventInit = { bubbles: true, cancelable: true } as EventInit;
const event = new Event(init, eventInit);
assertEquals(event.isTrusted, false);
assertEquals(event.target, null);
assertEquals(event.currentTarget, null);
assertEquals(event.type, "submit");
assertEquals(event.bubbles, true);
assertEquals(event.cancelable, true);
});
Deno.test(function eventComposedPathSuccess() {
const type = "click";
const event = new Event(type);
const composedPath = event.composedPath();
assertEquals(composedPath, []);
});
Deno.test(function eventStopPropagationSuccess() {
const type = "click";
const event = new Event(type);
assertEquals(event.cancelBubble, false);
event.stopPropagation();
assertEquals(event.cancelBubble, true);
});
Deno.test(function eventStopImmediatePropagationSuccess() {
const type = "click";
const event = new Event(type);
assertEquals(event.cancelBubble, false);
event.stopImmediatePropagation();
assertEquals(event.cancelBubble, true);
});
Deno.test(function eventPreventDefaultSuccess() {
const type = "click";
const event = new Event(type);
assertEquals(event.defaultPrevented, false);
event.preventDefault();
assertEquals(event.defaultPrevented, false);
const eventInit = { bubbles: true, cancelable: true } as EventInit;
const cancelableEvent = new Event(type, eventInit);
assertEquals(cancelableEvent.defaultPrevented, false);
cancelableEvent.preventDefault();
assertEquals(cancelableEvent.defaultPrevented, true);
});
Deno.test(function eventInitializedWithNonStringType() {
// deno-lint-ignore no-explicit-any
const type: any = undefined;
const event = new Event(type);
assertEquals(event.isTrusted, false);
assertEquals(event.target, null);
assertEquals(event.currentTarget, null);
assertEquals(event.type, "undefined");
assertEquals(event.bubbles, false);
assertEquals(event.cancelable, false);
});
Deno.test(function eventInspectOutput() {
// deno-lint-ignore no-explicit-any
const cases: Array<[any, (event: any) => string]> = [
[
new Event("test"),
(event: Event) =>
`Event {\n bubbles: false,\n cancelable: false,\n composed: false,\n currentTarget: null,\n defaultPrevented: false,\n eventPhase: 0,\n srcElement: null,\n target: null,\n returnValue: true,\n timeStamp: ${event.timeStamp},\n type: "test"\n}`,
],
[
new ErrorEvent("error"),
(event: Event) =>
`ErrorEvent {\n bubbles: false,\n cancelable: false,\n composed: false,\n currentTarget: null,\n defaultPrevented: false,\n eventPhase: 0,\n srcElement: null,\n target: null,\n returnValue: true,\n timeStamp: ${event.timeStamp},\n type: "error",\n message: "",\n filename: "",\n lineno: 0,\n colno: 0,\n error: undefined\n}`,
],
[
new CloseEvent("close"),
(event: Event) =>
`CloseEvent {\n bubbles: false,\n cancelable: false,\n composed: false,\n currentTarget: null,\n defaultPrevented: false,\n eventPhase: 0,\n srcElement: null,\n target: null,\n returnValue: true,\n timeStamp: ${event.timeStamp},\n type: "close",\n wasClean: false,\n code: 0,\n reason: ""\n}`,
],
[
new CustomEvent("custom"),
(event: Event) =>
`CustomEvent {\n bubbles: false,\n cancelable: false,\n composed: false,\n currentTarget: null,\n defaultPrevented: false,\n eventPhase: 0,\n srcElement: null,\n target: null,\n returnValue: true,\n timeStamp: ${event.timeStamp},\n type: "custom",\n detail: undefined\n}`,
],
[
new ProgressEvent("progress"),
(event: Event) =>
`ProgressEvent {\n bubbles: false,\n cancelable: false,\n composed: false,\n currentTarget: null,\n defaultPrevented: false,\n eventPhase: 0,\n srcElement: null,\n target: null,\n returnValue: true,\n timeStamp: ${event.timeStamp},\n type: "progress",\n lengthComputable: false,\n loaded: 0,\n total: 0\n}`,
],
];
for (const [event, outputProvider] of cases) {
assertEquals(Deno.inspect(event), outputProvider(event));
}
});
Deno.test(function inspectEvent() {
// has a customInspect implementation that previously would throw on a getter
assertEquals(
Deno.inspect(Event.prototype),
`Event {
bubbles: [Getter],
cancelable: [Getter],
composed: [Getter],
currentTarget: [Getter],
defaultPrevented: [Getter],
eventPhase: [Getter],
srcElement: [Getter/Setter],
target: [Getter],
returnValue: [Getter/Setter],
timeStamp: [Getter],
type: [Getter]
}`,
);
// ensure this still works
assertStringIncludes(
Deno.inspect(new Event("test")),
// check a substring because one property is a timestamp
`Event {\n bubbles: false,\n cancelable: false,`,
);
});
Deno.test("default argument is null prototype", () => {
const event = new Event("test");
assertEquals(event.bubbles, false);
// @ts-ignore this is on purpose to check if overriding prototype
// has effect on `Event.
Object.prototype.bubbles = true;
const event2 = new Event("test");
assertEquals(event2.bubbles, false);
// @ts-ignore this is done on purpose
delete Object.prototype.bubbles;
});
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