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denoland-deno/cli/tests/unit/structured_clone_test.ts
Andreu Botella c6bf07ec6d
fix(core): Don't override structured clone error messages from V8 (#13942)
In the implementation of structured serialization in
`Deno.core.serialize`, whenever there is a serialization error, an
exception will be thrown with the message "Failed to serialize
response", even though V8 provides a message to use in such cases.
This change instead throws an exception with the V8-provided message,
if there is one.
2022-03-14 19:35:15 +01:00

30 lines
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TypeScript

import { assert, assertEquals, assertThrows } 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();
});
Deno.test("correct DataCloneError message", () => {
assertThrows(
() => {
const sab = new SharedArrayBuffer(1024);
structuredClone(sab, { transfer: [sab] });
},
DOMException,
"Value not transferable",
);
});