nEngine/packages/core/test/sprite-sound.test.ts

import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { describe, expect, it } from "vitest";
import {
  ContentLoader,
  ContentRegistry,
  spriteSchema,
  soundSchema,
  type SoundDef,
  type SpriteDef,
} from "../src/index.js";

const SPRITE_YAML = [
  "id: parsnip-mature",
  "frames:",
  "  - name: idle",
  "    durationTicks: 1",
  "    layers:",
  "      - { shape: rect, x: 8, y: 8, w: 16, h: 16, fill: '#2e7d32' }",
  "      - { shape: circle, x: 16, y: 8, r: 6, fill: '#66bb6a' }",
  "",
].join("\n");

const SOUND_YAML = [
  "id: coin",
  "synth:",
  "  wave: sine",
  "  freq: 880",
  "  durationMs: 120",
  "  gain: 0.5",
  "  slideTo: 1320",
  "",
].join("\n");

async function setupLoader(): Promise<{ registry: ContentRegistry; loader: ContentLoader; tmp: string }> {
  const tmp = await mkdtemp(join(tmpdir(), "farm-sprite-sound-"));
  await mkdir(join(tmp, "sprites"), { recursive: true });
  await mkdir(join(tmp, "sounds"), { recursive: true });
  await writeFile(join(tmp, "sprites", "parsnip-mature.yaml"), SPRITE_YAML);
  await writeFile(join(tmp, "sounds", "coin.yaml"), SOUND_YAML);
  const registry = new ContentRegistry();
  const loader = new ContentLoader(registry);
  return { registry, loader, tmp };
}

describe("sprite content kind", () => {
  it("loads and validates sprite YAML from content/sprites/", async () => {
    const { registry, loader, tmp } = await setupLoader();
    try {
      const report = await loader.load(tmp);
      expect(report.ok).toBe(true);
      expect(registry.ids("sprite")).toEqual(["parsnip-mature"]);
      const sprite = registry.get<SpriteDef>("sprite", "parsnip-mature");
      expect(sprite).toEqual({
        id: "parsnip-mature",
        frames: [
          {
            name: "idle",
            durationTicks: 1,
            layers: [
              { shape: "rect", x: 8, y: 8, w: 16, h: 16, fill: "#2e7d32" },
              { shape: "circle", x: 16, y: 8, r: 6, fill: "#66bb6a" },
            ],
          },
        ],
      });
    } finally {
      await rm(tmp, { recursive: true, force: true });
    }
  });

  it("rejects an invalid sprite def (bad fill, unknown shape, strict unknown keys)", () => {
    expect(
      spriteSchema.safeParse({
        id: "bad",
        frames: [{ layers: [{ shape: "rect", x: 0, y: 0, w: 4, h: 4, fill: "green" }] }],
      }).success,
    ).toBe(false);

    expect(
      spriteSchema.safeParse({
        id: "bad",
        frames: [{ layers: [{ shape: "triangle", x: 0, y: 0, fill: "#ffffff" }] }],
      }).success,
    ).toBe(false);

    expect(
      spriteSchema.safeParse({
        id: "bad",
        frames: [{ layers: [{ shape: "rect", x: 0, y: 0, w: 4, h: 4, fill: "#ffffff", extra: true }] }],
      }).success,
    ).toBe(false);

    expect(spriteSchema.safeParse({ id: "bad", frames: [] }).success).toBe(false);
  });

  it("reports a bad sprite file as a loader error without crashing siblings", async () => {
    const { registry, loader, tmp } = await setupLoader();
    try {
      await writeFile(join(tmp, "sprites", "broken.yaml"), "id: broken\nframes: []\n");
      const report = await loader.load(tmp);
      expect(report.ok).toBe(false);
      const broken = report.items.find((i) => i.id === "broken");
      expect(broken?.status).toBe("error");
      expect(broken?.errors?.join(" ")).toMatch(/frames/);
      expect(registry.get("sprite", "parsnip-mature")).toBeDefined();
      expect(registry.get("sprite", "broken")).toBeUndefined();
    } finally {
      await rm(tmp, { recursive: true, force: true });
    }
  });
});

describe("sound content kind", () => {
  it("loads and validates sound YAML from content/sounds/", async () => {
    const { registry, loader, tmp } = await setupLoader();
    try {
      const report = await loader.load(tmp);
      expect(report.ok).toBe(true);
      expect(registry.ids("sound")).toEqual(["coin"]);
      const sound = registry.get<SoundDef>("sound", "coin");
      expect(sound).toEqual({
        id: "coin",
        synth: { wave: "sine", freq: 880, durationMs: 120, gain: 0.5, slideTo: 1320 },
      });
    } finally {
      await rm(tmp, { recursive: true, force: true });
    }
  });

  it("rejects an invalid sound def (neither synth nor src, bad wave, strict keys)", () => {
    expect(soundSchema.safeParse({ id: "silent" }).success).toBe(false);
    expect(soundSchema.safeParse({ id: "bad", synth: { wave: "noise", freq: 1, durationMs: 1 } }).success).toBe(false);
    expect(
      soundSchema.safeParse({ id: "bad", synth: { wave: "sine", freq: 1, durationMs: 1, extra: true } }).success,
    ).toBe(false);
  });

  it("accepts a src-only def and a synth+src def", () => {
    expect(soundSchema.safeParse({ id: "file-only", src: "sfx/coin.ogg" }).success).toBe(true);
    expect(
      soundSchema.safeParse({
        id: "both",
        synth: { wave: "square", freq: 440, durationMs: 50 },
        src: "sfx/coin.ogg",
      }).success,
    ).toBe(true);
  });
});