github-stats-extended/apps/backend/tests/calculateRank.test.js

import { describe, expect, it } from "vitest";

import { calculateRank } from "../src/calculateRank.js";

import { approxNumber } from "./utils.js";

import "@testing-library/jest-dom/vitest";

describe("Test calculateRank", () => {
  it("new user gets C rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 0,
        prs: 0,
        issues: 0,
        reviews: 0,
        repos: 0,
        stars: 0,
        followers: 0,
      }),
    ).toStrictEqual({ level: "C", percentile: 100 });
  });

  it("beginner user gets B- rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 125,
        prs: 25,
        issues: 10,
        reviews: 5,
        repos: 0,
        stars: 25,
        followers: 5,
      }),
    ).toStrictEqual({
      level: "B-",
      percentile: approxNumber(65.02918514848255),
    });
  });

  it("median user gets B+ rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 250,
        prs: 50,
        issues: 25,
        reviews: 10,
        repos: 0,
        stars: 50,
        followers: 10,
      }),
    ).toStrictEqual({ level: "B+", percentile: approxNumber(46.09375) });
  });

  it("average user gets B+ rank (include_all_commits)", () => {
    expect(
      calculateRank({
        all_commits: true,
        commits: 1000,
        prs: 50,
        issues: 25,
        reviews: 10,
        repos: 0,
        stars: 50,
        followers: 10,
      }),
    ).toStrictEqual({ level: "B+", percentile: approxNumber(46.09375) });
  });

  it("advanced user gets A rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 500,
        prs: 100,
        issues: 50,
        reviews: 20,
        repos: 0,
        stars: 200,
        followers: 40,
      }),
    ).toStrictEqual({
      level: "A",
      percentile: approxNumber(20.841471354166664),
    });
  });

  it("expert user gets A+ rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 1000,
        prs: 200,
        issues: 100,
        reviews: 40,
        repos: 0,
        stars: 800,
        followers: 160,
      }),
    ).toStrictEqual({
      level: "A+",
      percentile: approxNumber(5.575988339442828),
    });
  });

  it("sindresorhus gets S rank", () => {
    expect(
      calculateRank({
        all_commits: false,
        commits: 1300,
        prs: 1500,
        issues: 4500,
        reviews: 1000,
        repos: 0,
        stars: 600000,
        followers: 50000,
      }),
    ).toStrictEqual({
      level: "S",
      percentile: approxNumber(0.4578556547153667),
    });
  });
});