obd-raw-data-parser/dist/src/__tests__/DTC-multiframe.test.js

A lightweight TypeScript library for parsing OBD-II raw data into human readable format. Based on the excellent work of obd-utils by Nishkalkashyap.

import { DTCBaseDecoder } from "../index.js";
describe("DTC Multi-Frame Tests", () => {
    const baseConfig = {
        logPrefix: "TEST",
    };
    describe("Multi-Frame Parsing", () => {
        test("should handle split DTCs across frames", () => {
            const decoder = new DTCBaseDecoder({
                ...baseConfig,
                isCan: true,
                serviceMode: "03",
                troubleCodeType: "CURRENT",
            });
            const response = [
                // First frame with partial DTC
                [48, 49, 48, 13, 48, 58, 52, 51, 48, 55, 48, 49, 13],
                // Second frame with rest of the DTC
                [49, 58, 48, 49, 48, 49, 49, 51, 13],
                [13, 62]
            ];
            const result = decoder.decodeDTCs(response);
            expect(result).toEqual(["P0101", "P0113"]);
        });
        test("should handle leftover bytes between frames", () => {
            const decoder = new DTCBaseDecoder({
                ...baseConfig,
                isCan: true,
                serviceMode: "07",
                troubleCodeType: "PENDING",
            });
            const response = [
                // First frame with odd number of bytes
                [48, 49, 48, 13, 48, 58, 52, 55, 48, 55, 48, 49, 48, 49, 48, 49, 13],
                // Second frame should handle leftover byte
                [49, 58, 49, 51, 68, 49, 52, 66, 68, 49, 53, 66, 13],
                [13, 62]
            ];
            const result = decoder.decodeDTCs(response);
            expect(result).toEqual(["P0101", "P0113", "U114B", "U115B"]);
        });
        test("should handle frame sequence interruptions", () => {
            const decoder = new DTCBaseDecoder({
                ...baseConfig,
                isCan: true,
                serviceMode: "03",
                troubleCodeType: "CURRENT",
            });
            const response = [
                // Start of sequence
                [48, 49, 48, 13, 48, 58, 52, 51, 48, 55, 48, 49, 48, 49, 48, 49, 49, 51, 13],
                // Interrupting NO DATA frame
                [78, 79, 32, 68, 65, 84, 65, 13],
                // Continue sequence
                [49, 58, 68, 49, 52, 66, 68, 49, 53, 66, 68, 49, 53, 69, 68, 49, 13],
                [13, 62]
            ];
            const result = decoder.decodeDTCs(response);
            // Should ignore NO DATA frame and continue processing
            expect(result).toEqual([
                "P0101", "P0113",
                "U114B", "U115B", "U115E"
            ]);
        });
    });
});