import { describe, expect, it } from 'vitest';
import { cleanOptions, tableSize, type TableOption } from './spec';

const options: TableOption[] = [
	{ key: 'length', label: 'Length', choices: [{ value: 'short', label: 'Short' }, { value: 'long', label: 'Long' }], default: 'short' }
];

describe('table options', () => {
	it('keeps only declared options and offered choices, the rest at their defaults', () => {
		expect(cleanOptions({ options }, { length: 'long', colour: 'red' })).toEqual({ length: 'long' });
		expect(cleanOptions({ options }, { length: 'endless' })).toEqual({ length: 'short' });
		expect(cleanOptions({ options }, null)).toEqual({ length: 'short' });
	});

	it('seats as many as the options allow, never more than the seats there are', () => {
		const seatIds = ['A', 'B', 'C', 'D'];
		expect(tableSize({ seatIds, options })).toBe(4);
		const seatsFor = (o: Record<string, string>) => (o.length === 'short' ? 2 : 9);
		expect(tableSize({ seatIds, options, seatsFor }, { length: 'short' })).toBe(2);
		expect(tableSize({ seatIds, options, seatsFor }, { length: 'long' })).toBe(4);
	});
});