DeviceManager/src/lib/serial/chord.spec.ts

import { describe, it, expect } from "vitest";
import {
  deserializeActions,
  parseChordActions,
  parsePhrase,
  serializeActions,
  stringifyChordActions,
  stringifyPhrase,
} from "./chord";

describe("chords", function () {
  describe("actions", function () {
    it("should serialize actions", function () {
      expect(serializeActions([32, 51]).toString(16)).toEqual(
        0xcc200000000000000000000000000n.toString(16),
      );
    });

    it("should deserialize actions", function () {
      expect(deserializeActions(0xcc200000000000000000000000000n)).toEqual([
        32, 51,
      ]);
    });

    for (let i = 0; i < 12; i++) {
      it(`should serialize back-forth ${i} actions`, function () {
        const actions = Array.from({ length: i }).map((_, i) => i + 1);
        expect(deserializeActions(serializeActions(actions))).toEqual(actions);
      });
    }
  });

  describe("phrase", function () {
    it("should stringify", function () {
      expect(stringifyPhrase([0x20, 0x68, 0x72, 0xd4, 0x65, 0x1fff])).toEqual(
        "206872D4651FFF",
      );
    });

    it("should parse", function () {
      expect(parsePhrase("206872D4651FFF")).toEqual([
        0x20, 0x68, 0x72, 0xd4, 0x65, 0x1fff,
      ]);
    });
  });

  describe("chord actions", function () {
    it("should stringify", function () {
      expect(stringifyChordActions([32, 51])).toEqual(
        "000CC200000000000000000000000000",
      );
    });

    it("should parse", function () {
      expect(parseChordActions("000CC200000000000000000000000000")).toEqual([
        32, 51,
      ]);
    });
  });
});