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denoland-deno/cli/tests/unit/structured_clone_test.ts
Leo K 16ae4a0d57
feat(extensions/web): add structuredClone function (#11572)
Co-authored-by: Luca Casonato <hello@lcas.dev>
2021-08-09 10:39:00 +02:00

19 lines
792 B
TypeScript

import { assert, assertEquals } from "./test_util.ts";
// Basic tests for the structured clone algorithm. Mainly tests TypeScript
// typings. Actual functionality is tested in WPT.
Deno.test("self.structuredClone", async () => {
const arrayOriginal = ["hello world"];
const channelOriginal = new MessageChannel();
const [arrayCloned, portTransferred] = self
.structuredClone([arrayOriginal, channelOriginal.port2], {
transfer: [channelOriginal.port2],
});
assert(arrayOriginal !== arrayCloned); // not the same identity
assertEquals(arrayCloned, arrayOriginal); // but same value
channelOriginal.port1.postMessage("1");
await new Promise((resolve) => portTransferred.onmessage = () => resolve(1));
channelOriginal.port1.close();
portTransferred.close();
});