import { describe, it, expect } from 'vitest';
import { extractErrorCode } from './api.server';

describe('extractErrorCode', () => {
	it('returns the code string when error has a code property', () => {
		expect(extractErrorCode({ code: 'DOCUMENT_NOT_FOUND' })).toBe('DOCUMENT_NOT_FOUND');
	});
	it('returns undefined when error is undefined', () => {
		expect(extractErrorCode(undefined)).toBeUndefined();
	});
	it('returns undefined when error is null', () => {
		expect(extractErrorCode(null)).toBeUndefined();
	});
	it('returns undefined when error is a plain string', () => {
		expect(extractErrorCode('oops')).toBeUndefined();
	});
	it('returns undefined when error object has no code property', () => {
		expect(extractErrorCode({ message: 'fail' })).toBeUndefined();
	});
});