minesweeper-mcp

// ABOUTME: Unit tests for configuration parsing and validation.
// ABOUTME: Ensures required env vars and defaults behave correctly.

import assert from "node:assert/strict";
import { test } from "node:test";
import { ConfigError, loadConfig } from "../../src/config.js";

const baseEnv = {
  MINESWEEPER_BASE_URL: "http://localhost:3000",
};

test("loadConfig normalizes base URL", () => {
  const config = loadConfig({ ...baseEnv, MINESWEEPER_BASE_URL: "http://localhost:3000/" });
  assert.equal(config.baseUrl, "http://localhost:3000");
});

test("loadConfig uses default timeout", () => {
  const config = loadConfig({ ...baseEnv });
  assert.equal(config.requestTimeoutMs, 10000);
});

test("loadConfig rejects missing base URL", () => {
  assert.throws(() => loadConfig({}), (error: unknown) => {
    assert.ok(error instanceof ConfigError);
    return true;
  });
});

test("loadConfig rejects invalid timeout", () => {
  assert.throws(
    () => loadConfig({ ...baseEnv, REQUEST_TIMEOUT_MS: "-5" }),
    (error: unknown) => {
      assert.ok(error instanceof ConfigError);
      return true;
    }
  );
});