packages/util/src/array/flatten.spec.ts
// Copyright 2017-2024 @polkadot/util authors & contributors
// SPDX-License-Identifier: Apache-2.0
/// <reference types="@polkadot/dev-test/globals.d.ts" />
import { perf } from '../test/index.js';
import { arrayFlatten } from './index.js';
const PERF_ONE = [[1, 2, 3, 4, 5]];
const PERF_MUL = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
describe('arrayFlatten', (): void => {
it('flattens arrays', (): void => {
expect(
arrayFlatten([[0], [1, 2, 3], [4, 5], [6], [], [7, 8]])
).toEqual([0, 1, 2, 3, 4, 5, 6, 7, 8]);
});
it('flattens a single entry', (): void => {
expect(
arrayFlatten([[1, 2, 3, 4, 5]])
).toEqual([1, 2, 3, 4, 5]);
});
it('flattens an empty', (): void => {
expect(
arrayFlatten([])
).toEqual([]);
});
perf('arrayFlatten (single)', 10_000_000, [[PERF_ONE]], arrayFlatten);
perf('arrayFlatten (multi)', 700_000, [[PERF_MUL]], arrayFlatten);
});