meoser/test/checksum.test.js

meos protocol engine

import {
    calcFrameCheckSum,
    calcFileCheckSum,
    stringToAsciiCode,
    intArrayToHexArray
} from '../src/util';
import chai from 'chai';
const expect = chai.expect;

describe('test checkFrameSum', function() {
    it('should get correct frame check sum', function() {
        var data = [0x01, 0x02, 0x03, 0x04];
        let sum = calcFrameCheckSum(data);
        expect(sum).to.equal(10);
    });

    it('should get correct ascii code from content', function() {
        var content = "makeblock_rgbled().set_color(10,10,10)";
        let content_bytes = stringToAsciiCode(content);
        let result = "6d 61 6b 65 62 6c 6f 63 6b 5f 72 67 62 6c 65 64 28 29 2e 73 65 74 5f 63 6f 6c 6f 72 28 31 30 2c 31 30 2c 31 30 29";
        let cal_result = intArrayToHexArray(content_bytes).join(" ");
        expect(cal_result).to.equal(result);
    });
});

const checkFileSumCase = [{
    desc: 'should get correct file check sum: 1bytes',
    data: [0x01],
    expect: 0x01000000
}, {
    desc: 'should get correct file check sum: 4bytes',
    data: [0x01, 0x02, 0x03, 0x04],
    expect: 0x01020304
}, {
    desc: 'should get correct file check sum: 5bytes',
    data: [0x01, 0x02, 0x03, 0x04, 0x01],
    expect: 0x00020304
}, {
    desc: 'should get correct file check sum: 8bytes',
    data: [0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04],
    expect: 0x00000000
}, {
    desc: 'should get correct file check sum: 9bytes',
    data: [0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0xfa],
    expect: 0xfa000000
}]
describe('test checkFileSum', function() {
    for (let case_ of checkFileSumCase) {
        it(case_.desc, function() {
            let sum = calcFileCheckSum(case_.data);
            let rchecksum = parseInt(intArrayToHexArray(sum).join(""), 16);
            expect(rchecksum).to.equal(case_.expect);
        });
    }
});