packages/types/src/metadata/MagicNumber.spec.ts
// Copyright 2017-2024 @polkadot/types authors & contributors
// SPDX-License-Identifier: Apache-2.0
/// <reference types="@polkadot/dev-test/globals.d.ts" />
import { TypeRegistry } from '../create/index.js';
import { MAGIC_NUMBER, MagicNumber } from './MagicNumber.js';
describe('MagicNumber', (): void => {
const registry = new TypeRegistry();
it('succeeds when the magic number matches', (): void => {
expect(
() => new MagicNumber(registry, MAGIC_NUMBER)
).not.toThrow();
});
it('succeeds when the magic number is empty', (): void => {
expect(
() => new MagicNumber(registry)
).not.toThrow();
});
it('fails when the magic number mismatches', (): void => {
expect(
() => new MagicNumber(registry, 0x12345678)
).toThrow(/MagicNumber mismatch/);
});
});