import { describe, expect, it } from "vitest";
import { problemInstance, problemResponse } from "./problem-response";

describe("problemResponse", () => {
  it("uses the request path and query as the problem instance", () => {
    expect(problemInstance(new Request("https://example.com/api/items?cursor=next")))
      .toBe("/api/items?cursor=next");
  });

  it("returns RFC 9457 JSON with the required media type", async () => {
    const response = problemResponse({
      type: "urn:error:unauthorized",
      title: "Unauthorized",
      status: 401,
      detail: "A valid Velocity server credential is required.",
      instance: "/api/velocity/access",
    });

    expect(response.status).toBe(401);
    expect(response.headers.get("content-type")).toBe("application/problem+json");
    expect(await response.json()).toEqual({
      type: "urn:error:unauthorized",
      title: "Unauthorized",
      status: 401,
      detail: "A valid Velocity server credential is required.",
      instance: "/api/velocity/access",
    });
  });
});