import { describe, it, expect } from "vitest";
import { z } from "zod";
import { defineEvent } from "@/event-descriptor";

describe("defineEvent", () => {
  it("returns a descriptor with name and schema", () => {
    const schema = z.object({ id: z.string() }).strict();
    const descriptor = defineEvent("test.thing.happened", schema);
    expect(descriptor.name).toBe("test.thing.happened");
    expect(descriptor.schema).toBe(schema);
  });

  it("descriptor.schema parses valid payloads", () => {
    const schema = z.object({ id: z.string() }).strict();
    const d = defineEvent("test.evt", schema);
    expect(() => d.schema.parse({ id: "abc" })).not.toThrow();
  });

  it("descriptor.schema rejects invalid payloads", () => {
    const schema = z.object({ id: z.string() }).strict();
    const d = defineEvent("test.evt", schema);
    expect(() => d.schema.parse({ id: 123 })).toThrow();
  });
});