MCMapper-Backend/api/src/index.test.ts

import { describe, test, expect, beforeAll, afterAll } from "bun:test";
import { app } from "./index";
import { db } from "./db/client";
import { meshPointers, tilePointers } from "./db/schema";
import { minio, TILE_BUCKET } from "./minio";
import { createTestServer, deleteTestServer } from "./test-helpers";

// Elysia's `.handle()` drives the app in-process against a plain Request/Response, without
// binding a real port — avoids racing a real running instance for the port (see MCMapper's
// memory notes on stale dev-server processes double-binding a port on Windows) and is faster.
function get(path: string) {
  return app.handle(new Request(`http://localhost${path}`));
}

describe("GET /health", () => {
  test("reports ok", async () => {
    const res = await get("/health");
    expect(res.status).toBe(200);
    expect(await res.json()).toEqual({ status: "ok" });
  });
});

describe("GET /api/servers", () => {
  let server: { id: string; token: string };

  beforeAll(async () => {
    server = await createTestServer("servers-route");
  });

  afterAll(async () => {
    await deleteTestServer(server.id);
  });

  test("includes the seeded server without leaking its token", async () => {
    const res = await get("/api/servers");
    expect(res.status).toBe(200);
    const rows = (await res.json()) as any[];
    const found = rows.find((r) => r.id === server.id);
    expect(found).toEqual({ id: server.id, name: "test-servers-route" });
  });
});

describe("GET /api/tiles/:serverId/:dimension/:zoom/:tileX/:tileY", () => {
  let server: { id: string; token: string };
  const storageKey = "test-tile-object.png";
  const pngBytes = new Uint8Array([1, 2, 3, 4]);

  beforeAll(async () => {
    server = await createTestServer("tiles-route");
    await minio.putObject(TILE_BUCKET, storageKey, Buffer.from(pngBytes));
    await db.insert(tilePointers).values({
      serverId: server.id,
      dimension: 0,
      zoom: 0,
      tileX: 5,
      tileZ: -3, // stored as chunkZ; the route negates the requested tileY to get here
      storageKey,
      contentHash: "test-hash",
    });
  });

  afterAll(async () => {
    await deleteTestServer(server.id);
    await minio.removeObject(TILE_BUCKET, storageKey).catch(() => {});
  });

  test("negates tileY back to the stored chunkZ and streams the object", async () => {
    // chunkZ = -3, so the frontend's tileY (see public/js/map.js) is 3.
    const res = await get(`/api/tiles/${server.id}/0/0/5/3.png`);
    expect(res.status).toBe(200);
    expect(res.headers.get("content-type")).toBe("image/png");
    const body = new Uint8Array(await res.arrayBuffer());
    expect(body).toEqual(pngBytes);
  });

  test("404s for a tile that hasn't been rendered", async () => {
    const res = await get(`/api/tiles/${server.id}/0/0/999/999.png`);
    expect(res.status).toBe(404);
  });
});

describe("GET /api/meshes/...", () => {
  let server: { id: string; token: string };
  const storageKey = "test-mesh-object.bin";
  const meshBytes = new Uint8Array([9, 9, 9]);

  beforeAll(async () => {
    server = await createTestServer("meshes-route");
    await minio.putObject(TILE_BUCKET, storageKey, Buffer.from(meshBytes));
    await db.insert(meshPointers).values({
      serverId: server.id,
      dimension: 0,
      x: 2,
      z: 3,
      sectionY: 4,
      storageKey,
      contentHash: "test-hash",
    });
  });

  afterAll(async () => {
    await deleteTestServer(server.id);
    await minio.removeObject(TILE_BUCKET, storageKey).catch(() => {});
  });

  test("lists the rendered sections for a chunk", async () => {
    const res = await get(`/api/meshes/${server.id}/0/2/3`);
    expect(await res.json()).toEqual([4]);
  });

  test("lists nothing for a chunk with no meshes yet", async () => {
    const res = await get(`/api/meshes/${server.id}/0/999/999`);
    expect(await res.json()).toEqual([]);
  });

  test("serves the mesh binary with the right content type", async () => {
    const res = await get(`/api/meshes/${server.id}/0/2/3/4.bin`);
    expect(res.status).toBe(200);
    expect(res.headers.get("content-type")).toBe("application/octet-stream");
    const body = new Uint8Array(await res.arrayBuffer());
    expect(body).toEqual(meshBytes);
  });

  test("404s for a section that hasn't been rendered", async () => {
    const res = await get(`/api/meshes/${server.id}/0/2/3/15.bin`);
    expect(res.status).toBe(404);
  });
});