import { describe, expect, it } from "bun:test";
import { newSessionId } from "./session_id.ts";

describe("newSessionId", () => {
  it("accepts valid UUIDs", () => {
    expect(newSessionId("550e8400-e29b-41d4-a716-446655440000").ok).toBe(true);
    expect(newSessionId("my-session_123").ok).toBe(true);
  });

  it("rejects path traversal", () => {
    expect(newSessionId("../etc/passwd").ok).toBe(false);
    expect(newSessionId("foo/../../bar").ok).toBe(false);
    expect(newSessionId("foo\\..\\bar").ok).toBe(false);
  });

  it("rejects empty", () => {
    expect(newSessionId("").ok).toBe(false);
  });

  it("returns the id string on success", () => {
    const res = newSessionId("abc-123");
    expect(res.ok).toBe(true);
    if (res.ok) expect(res.value).toBe("abc-123");
  });
});