ts-mls/dist/test/codec/optional.test.js

[](https://github.com/LukaJCB/ts-mls/actions/workflows/ci.yml) [](https://badge.fury.io/js/ts-mls) [![Coverage Status](https://co

import { decodeUint64, decodeUint8, encodeUint64, encodeUint8 } from "../../src/codec/number";
import { decodeOptional, encodeOptional } from "../../src/codec/optional";
import { randomBytes } from "@noble/ciphers/webcrypto";
import { decodeVarLenData, encodeVarLenData } from "../../src/codec/variableLength";
test("optional codec should return single 0 byte", () => {
    const e = encodeOptional(encodeUint8)(undefined);
    expect(e).toStrictEqual(new Uint8Array([0]));
    const e2 = encodeOptional(encodeUint64)(undefined);
    expect(e2).toStrictEqual(new Uint8Array([0]));
    const e3 = encodeOptional(encodeVarLenData)(undefined);
    expect(e3).toStrictEqual(new Uint8Array([0]));
});
test("optional codec roundtrip uint8: 255", () => {
    optionalRoundTrip(255, encodeUint8, decodeUint8);
});
test("optional codec roundtrip uint64: 394245935729", () => {
    optionalRoundTrip(394245935729n, encodeUint64, decodeUint64);
});
test("optional codec roundtrip uint64: 394245935729", () => {
    optionalRoundTrip(394245935729n, encodeUint64, decodeUint64);
});
test("optional codec roundtrip randomBytes(8)", () => {
    optionalRoundTrip(randomBytes(8), encodeVarLenData, decodeVarLenData);
});
test("optional codec roundtrip randomBytes(128)", () => {
    optionalRoundTrip(randomBytes(128), encodeVarLenData, decodeVarLenData);
});
test("optional codec roundtrip randomBytes(500)", () => {
    optionalRoundTrip(randomBytes(500), encodeVarLenData, decodeVarLenData);
});
function optionalRoundTrip(t, enc, dec) {
    const encodedOptional = encodeOptional(enc)(t);
    const encoded = enc(t);
    expect(encoded.byteLength).toBe(encodedOptional.byteLength - 1);
    const decodedOptional = decodeOptional(dec)(encodedOptional, 0);
    expect(decodedOptional?.[0]).toStrictEqual(t);
    const encodedNone = encodeOptional(enc)(undefined);
    const decodedNone = decodeOptional(dec)(encodedNone, 0);
    expect(decodedNone).toBeDefined();
    expect(decodedNone?.[0]).toBeUndefined();
}
//# sourceMappingURL=optional.test.js.map