/**

* @license

* Copyright 2018 Google Inc. All Rights Reserved.

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

* =============================================================================

*/

import {toArrayBuffer, toBuffer} from './io_utils';

describe('toBuffer', () => {

it('Simple case', () => {

const ab = new Uint8Array([3, 2, 1]).buffer;

const buffer = toBuffer(ab);

expect(new Uint8Array(buffer)).toEqual(new Uint8Array([3, 2, 1]));

});

});

describe('toArrayBuffer', () => {

it('Single Buffer', () => {

const buf = Buffer.from([10, 20, 30]);

const ab = toArrayBuffer(buf);

expect(new Uint8Array(ab)).toEqual(new Uint8Array([10, 20, 30]));

});

it('Two Buffers', () => {

const buf1 = Buffer.from([10, 20, 30]);

const buf2 = Buffer.from([40, 50, 60]);

const ab = toArrayBuffer([buf1, buf2]);

expect(new Uint8Array(ab)).toEqual(new Uint8Array([

10, 20, 30, 40, 50, 60

]));

});

it('Three Buffers', () => {

const buf1 = Buffer.from([10, 20, 30]);

const buf2 = Buffer.from([40, 50, 60]);

const buf3 = Buffer.from([3, 2, 1]);

const ab = toArrayBuffer([buf1, buf2, buf3]);

expect(new Uint8Array(ab)).toEqual(new Uint8Array([

10, 20, 30, 40, 50, 60, 3, 2, 1

]));

});

it('Zero buffers', () => {

const ab = toArrayBuffer([]);

expect(new Uint8Array(ab)).toEqual(new Uint8Array([]));

});

});