rosie

import { Factory } from 'rosie'; // Define a 'game' factory with sequences, attributes, and dependent attributes. Factory.define('game') .sequence('id') .attr('is_over', false) .attr('created_at', () => new Date()) .attr('random_seed', () => Math.random()) .attr('players', ['players'], (players) => { if (!players) { players = [{}, {}]; } return players.map((data) => Factory.attributes('player', data)); }); // Define a 'player' factory, extended by 'disabled-player'. Factory.define('player') .sequence('id') .sequence('name', (i) => `player${i}`) .attr('position', ['id'], (id) => { const positions = ['pitcher', '1st base', '2nd base', '3rd base']; return positions[id % positions.length]; }); // Extend the 'player' factory to create a 'disabled-player'. Factory.define('disabled-player').extend('player').attr('state', 'disabled'); // Build an object, overriding some attributes. const game = Factory.build('game', { is_over: true }); console.log('Built Game:', game); // Build an object using the extended factory. const disabledPlayer = Factory.build('disabled-player'); console.log('Built Disabled Player:', disabledPlayer); // Get just the attributes without invoking a constructor. const gameAttributes = Factory.attributes('game', { is_over: false }); console.log('Game Attributes:', gameAttributes); // Example with options (options are not part of the final object). Factory.define('matches') .attr('seasonStart', '2024-01-01') .option('numMatches', 2) .attr('matches', ['numMatches', 'seasonStart'], (numMatches, seasonStart) => { const matches = []; for (let i = 1; i <= numMatches; i++) { const matchDate = new Date(seasonStart); matchDate.setDate(matchDate.getDate() + (i * 7)); // Add weeks matches.push({ matchDate: matchDate.toISOString().split('T')[0], homeScore: Math.floor(Math.random() * 5), awayScore: Math.floor(Math.random() * 5) }); } return matches; }); const matchData = Factory.build('matches', { seasonStart: '2024-03-12' }, { numMatches: 3 }); console.log('Match Data with options:', matchData);