import { describe, expect, it } from 'vitest';
import { mkdtempSync, realpathSync, symlinkSync, writeFileSync } from 'fs';
import { join, resolve } from 'path';
import { tmpdir } from 'os';
import { resolveEntrypoint } from '../index.js';
describe('resolveEntrypoint', () => {
it('returns undefined for undefined input', () => {
expect(resolveEntrypoint(undefined)).toBeUndefined();
});
it('falls back to path.resolve when path does not exist', () => {
const missing = './definitely-missing-entrypoint.js';
expect(resolveEntrypoint(missing)).toBe(resolve(missing));
});
it('resolves symlinks to their real path', () => {
const dir = mkdtempSync(join(tmpdir(), 'specwf-entrypoint-'));
const target = join(dir, 'target.js');
const link = join(dir, 'link.js');
writeFileSync(target, 'console.log("ok");', 'utf-8');
symlinkSync(target, link);
expect(resolveEntrypoint(link)).toBe(realpathSync(target));
});
});
