// ABOUTME: Unit tests for tool input validation helpers.
// ABOUTME: Verifies coordinate bounds and required string behavior.
import assert from "node:assert/strict";
import { test } from "node:test";
import { requireCoordinates, requireString, ValidationError } from "../../src/tools/validation.js";
test("requireString returns trimmed string", () => {
assert.equal(requireString("slug", "user_slug"), "slug");
});
test("requireString rejects empty string", () => {
assert.throws(() => requireString("", "user_slug"), ValidationError);
});
test("requireCoordinates accepts valid bounds", () => {
assert.deepEqual(requireCoordinates({ x: 0, y: 8 }), { x: 0, y: 8 });
});
test("requireCoordinates rejects out of bounds", () => {
assert.throws(() => requireCoordinates({ x: 9, y: 0 }), ValidationError);
});
