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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// deno-lint-ignore-file no-node-globals
import {
assert,
assertEquals,
assertRejects,
assertThrows,
} from "./test_util.ts";
Deno.test(function globalThisExists() {
assert(globalThis != null);
});
Deno.test(function noInternalGlobals() {
// globalThis.__bootstrap should not be there.
for (const key of Object.keys(globalThis)) {
assert(!key.startsWith("_"));
}
});
Deno.test(function selfExists() {
assert(self != null);
});
Deno.test(function globalThisWindowEqualsUndefined() {
assert(globalThis.window === undefined);
});
Deno.test(function globalThisEqualsSelf() {
assert(globalThis === self);
});
Deno.test(function globalThisConstructorLength() {
assert(globalThis.constructor.length === 0);
});
Deno.test(function globalThisInstanceofEventTarget() {
assert(globalThis instanceof EventTarget);
});
Deno.test(function navigatorInstanceofNavigator() {
// TODO(nayeemrmn): Add `Navigator` to deno_lint globals.
// deno-lint-ignore no-undef
assert(navigator instanceof Navigator);
});
Deno.test(function DenoNamespaceExists() {
assert(Deno != null);
});
Deno.test(function DenoNamespaceIsNotFrozen() {
assert(!Object.isFrozen(Deno));
});
Deno.test(function webAssemblyExists() {
assert(typeof WebAssembly.compile === "function");
});
// @ts-ignore This is not publicly typed namespace, but it's there for sure.
const core = Deno[Deno.internal].core;
Deno.test(function DenoNamespaceConfigurable() {
const desc = Object.getOwnPropertyDescriptor(globalThis, "Deno");
assert(desc);
assert(desc.configurable);
assert(!desc.writable);
});
Deno.test(function DenoCoreNamespaceIsImmutable() {
const { print } = core;
try {
core.print = 1;
} catch {
// pass
}
assert(print === core.print);
try {
delete core.print;
} catch {
// pass
}
assert(print === core.print);
});
Deno.test(async function windowQueueMicrotask() {
let resolve1: () => void | undefined;
let resolve2: () => void | undefined;
let microtaskDone = false;
const p1 = new Promise<void>((res) => {
resolve1 = () => {
microtaskDone = true;
res();
};
});
const p2 = new Promise<void>((res) => {
resolve2 = () => {
assert(microtaskDone);
res();
};
});
globalThis.queueMicrotask(resolve1!);
setTimeout(resolve2!, 0);
await p1;
await p2;
});
Deno.test(function webApiGlobalThis() {
assert(globalThis.FormData !== null);
assert(globalThis.TextEncoder !== null);
assert(globalThis.TextEncoderStream !== null);
assert(globalThis.TextDecoder !== null);
assert(globalThis.TextDecoderStream !== null);
assert(globalThis.CountQueuingStrategy !== null);
assert(globalThis.ByteLengthQueuingStrategy !== null);
});
Deno.test(function windowNameIsDefined() {
assertEquals(typeof globalThis.name, "string");
assertEquals(name, "");
name = "foobar";
assertEquals(name, "foobar");
name = "";
assertEquals(name, "");
});
Deno.test(async function promiseWithResolvers() {
{
const { promise, resolve } = Promise.withResolvers();
resolve(true);
assert(await promise);
}
{
const { promise, reject } = Promise.withResolvers();
reject(new Error("boom!"));
await assertRejects(() => promise, Error, "boom!");
}
});
Deno.test(async function arrayFromAsync() {
// Taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync#examples
// Thank you.
const asyncIterable = (async function* () {
for (let i = 0; i < 5; i++) {
await new Promise((resolve) => setTimeout(resolve, 10 * i));
yield i;
}
})();
const a = await Array.fromAsync(asyncIterable);
assertEquals(a, [0, 1, 2, 3, 4]);
const b = await Array.fromAsync(new Map([[1, 2], [3, 4]]));
assertEquals(b, [[1, 2], [3, 4]]);
});
// Taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy#examples
Deno.test(function objectGroupBy() {
const inventory = [
{ name: "asparagus", type: "vegetables", quantity: 5 },
{ name: "bananas", type: "fruit", quantity: 0 },
{ name: "goat", type: "meat", quantity: 23 },
{ name: "cherries", type: "fruit", quantity: 5 },
{ name: "fish", type: "meat", quantity: 22 },
];
const result = Object.groupBy(inventory, ({ type }) => type);
assertEquals(result, {
vegetables: [
{ name: "asparagus", type: "vegetables", quantity: 5 },
],
fruit: [
{ name: "bananas", type: "fruit", quantity: 0 },
{ name: "cherries", type: "fruit", quantity: 5 },
],
meat: [
{ name: "goat", type: "meat", quantity: 23 },
{ name: "fish", type: "meat", quantity: 22 },
],
});
});
Deno.test(function objectGroupByEmpty() {
const empty: string[] = [];
const result = Object.groupBy(empty, () => "abc");
assertEquals(result.abc, undefined);
});
// Taken from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/groupBy#examples
Deno.test(function mapGroupBy() {
const inventory = [
{ name: "asparagus", type: "vegetables", quantity: 9 },
{ name: "bananas", type: "fruit", quantity: 5 },
{ name: "goat", type: "meat", quantity: 23 },
{ name: "cherries", type: "fruit", quantity: 12 },
{ name: "fish", type: "meat", quantity: 22 },
];
const restock = { restock: true };
const sufficient = { restock: false };
const result = Map.groupBy(
inventory,
({ quantity }) => quantity < 6 ? restock : sufficient,
);
assertEquals(result.get(restock), [{
name: "bananas",
type: "fruit",
quantity: 5,
}]);
});
Deno.test(function nodeGlobalsRaise() {
assertThrows(() => {
// @ts-ignore yes that's the point
Buffer;
}, ReferenceError);
});
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