polkadot-js/api

// Copyright 2017-2024 @polkadot/types authors & contributors
// SPDX-License-Identifier: Apache-2.0

/// <reference types="@polkadot/dev-test/globals.d.ts" />

import rpcMetadata from '@polkadot/types-support/metadata/static-substrate';

import { TypeRegistry } from '../../../create/index.js';
import { Metadata } from '../../Metadata.js';
import { decorateEvents } from '../index.js';

const registry = new TypeRegistry();
const metadata = new Metadata(registry, rpcMetadata);

registry.setMetadata(metadata);

const events = decorateEvents(registry, metadata.asLatest, metadata.version);

describe('decorateEvents', (): void => {
  it('should return known errors', (): void => {
    expect(events['balances']['Transfer']).toBeDefined();
    expect(events['system']['CodeUpdated']).toBeDefined();
  });

  it('has the correct metadata for known errors', (): void => {
    expect(
      events['staking']['Rewarded'].meta.toJSON()
    ).toEqual({
      args: [
        'AccountId32',
        '{"_enum":{"Staked":"Null","Stash":"Null","Controller":"Null","Account":"AccountId32","None":"Null"}}',
        'u128'
      ],
      docs: [
        'The nominator has been rewarded by this amount to this destination.'
      ],
      fields: [
        { docs: [], name: 'stash', type: 0, typeName: 'T::AccountId' },
        { docs: [], name: 'dest', type: 48, typeName: 'RewardDestination<T::AccountId>' },
        { docs: [], name: 'amount', type: 6, typeName: 'BalanceOf<T>' }
      ],
      index: 1,
      name: 'Rewarded'
    });
  });

  it('should check against a specific error', (): void => {
    expect(
      events['system']['ExtrinsicSuccess'].is(registry.createType('Event', { index: [0, 0] }))
    ).toBe(true);
  });
});