57 lines
1.7 KiB
TypeScript
57 lines
1.7 KiB
TypeScript
// Copyright 2021 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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/* eslint-env browser, jasmine */
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import 'jasmine';
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import {Decoder} from './decoder';
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import * as protocol from './protocol';
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import * as util from './util';
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const FLAG = Uint8Array.from([protocol.FLAG]);
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function withFCS(data: Uint8Array): Uint8Array {
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return util.concatenate(data, protocol.frameCheckSequence(data));
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}
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function withFlags(data: Uint8Array): Uint8Array {
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return util.concatenate(FLAG, data, FLAG);
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}
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describe('Decoder', () => {
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let decoder: Decoder;
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let textEncoder: TextEncoder;
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beforeEach(() => {
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decoder = new Decoder();
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textEncoder = new TextEncoder();
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});
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it('parses a correct UI frame peoperly', () => {
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const expectedData = textEncoder.encode('123456789');
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const expectedAddress = 128;
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const frameData = withFlags(
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withFCS(textEncoder.encode('\x00\x03\x03123456789'))
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);
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const frames = Array.from(decoder.process(frameData));
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expect(frames.length).toEqual(1);
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expect(frames[0].address).toEqual(expectedAddress);
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expect(frames[0].data).toEqual(expectedData);
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expect(frames[0].ok()).toBe(true);
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});
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});
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