import { describe, expect, it } from "vitest";
import { findRoutes, properties } from "../../src/lab/catalog";

describe("format catalog", () => {
  it("prefers the lower-loss route for selected properties", () => {
    const routes = findRoutes("data", "json", "xml", [
      "scalar-types",
      "nested",
      "nulls",
    ]);
    expect(routes[0]?.formats).toEqual(["json", "xml"]);
    expect(routes[0]?.summary).toMatchObject({
      "scalar-types": "expected-preserved",
      nested: "expected-preserved",
    });
    expect(
      routes.find((route) => route.formats.includes("csv"))?.score,
    ).toBeGreaterThan(routes[0]!.score);
  });

  it("enumerates bounded acyclic routes and identity evidence", () => {
    const routes = findRoutes(
      "subtitle",
      "ass",
      "srt",
      properties.subtitle.map((item) => item.id),
    );
    expect(routes.length).toBeGreaterThan(0);
    expect(
      routes.every(
        (route) =>
          route.edges.length <= 4 &&
          new Set(route.formats).size === route.formats.length,
      ),
    ).toBe(true);
    expect(findRoutes("image", "png", "png", ["pixels"])[0]).toMatchObject({
      formats: ["png"],
      score: 0,
    });
  });

  it("does not invent paths between incompatible audio and video families", () => {
    expect(findRoutes("av", "wav", "mp4", ["audio"])).toEqual([]);
  });
});