trimlog-ykonsole-chrome-extension/my-bois/src/helpers/diff.test.js

import calculateDiff, {diffString} from "./diff";

const programWithoutWarmup = {
  warmupMin: 0,
  warmupCpm: 0,
  cpm: 30,
  cooldownCpm: 20,
};

const programWithWarmup = {
  warmupMin: 10,
  warmupCpm: 25,
  cpm: 30,
  cooldownCpm: 20,
};

describe('diffString', () => {
  it("should show a plus before zero", () => {
    expect(diffString(0)).toBe("+0");
  });

  it("should show a plus before a positive number", () => {
    expect(diffString(44)).toBe("+44");
  });

  it("should show a minus when negatives", () => {
    expect(diffString(-12)).toBe("-12");
  });
});

describe("calculateDiff", () => {
  it("should return zero at start", () => {
    const diff = calculateDiff({
      program: programWithoutWarmup,
      minutes: 0,
      seconds: 0,
      calories: 0,
    });

    expect(diff).toBe(0);
  });

  it("should expect 300 calories after 0' / 10'", () => {
    const diff = calculateDiff({
      program: programWithoutWarmup,
      minutes: 10,
      seconds: 0,
      calories: 305,
    });

    expect(diff).toBe(5);
  });

  it("should expect 865 calories after 10' / 20'50", () => {
    const diff = calculateDiff({
      program: programWithWarmup,
      minutes: 30,
      seconds: 50,
      calories: 250 + 600 + 25 - 17,
    });

    // Aim: 875
    expect(diff).toBe(-17);
  });

  it("should expect 755 calories after 10' / 15' / 7'45", () => {
    const diff = calculateDiff({
      program: programWithWarmup,
      cooldownMin: 25,
      minutes: 32,
      seconds: 45,
      calories: 250 + 450 + 140 + 15,
    });

    expect(diff).toBe(0);
  });

  it("should expect 325 calories after 5' (half) / 0' / 10'", () => {
    const diff = calculateDiff({
      program: programWithWarmup,
      cooldownMin: 5,
      minutes: 15,
      seconds: 0,
      calories: 325
    });

    expect(diff).toBe(0);
  });
});