| // Copyright 2021 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| /* eslint-env browser, jasmine */ |
| import 'jasmine'; |
| |
| import {Decoder} from './decoder'; |
| import * as protocol from './protocol'; |
| import * as util from './util'; |
| |
| const FLAG = Uint8Array.from([protocol.FLAG]); |
| |
| function withFCS(data: Uint8Array): Uint8Array { |
| return util.concatenate(data, protocol.frameCheckSequence(data)); |
| } |
| |
| function withFlags(data: Uint8Array): Uint8Array { |
| return util.concatenate(FLAG, data, FLAG); |
| } |
| |
| describe('Decoder', () => { |
| let decoder: Decoder; |
| let textEncoder: TextEncoder; |
| |
| beforeEach(() => { |
| decoder = new Decoder(); |
| textEncoder = new TextEncoder(); |
| }); |
| |
| it('parses a correct UI frame peoperly', () => { |
| const expectedData = textEncoder.encode('123456789'); |
| const expectedAddress = 128; |
| |
| const frameData = withFlags( |
| withFCS(textEncoder.encode('\x00\x03\x03123456789')) |
| ); |
| |
| const frames = Array.from(decoder.process(frameData)); |
| |
| expect(frames.length).toEqual(1); |
| expect(frames[0].address).toEqual(expectedAddress); |
| expect(frames[0].data).toEqual(expectedData); |
| expect(frames[0].ok()).toBe(true); |
| }); |
| }); |