lsystem/tests/fixtures/system-specifications.js

A module that lets you create L-systems, which will take rules, then use those rules to transform strings into other strings.

var systems = [
  {
    name: 'Algae',
    initialState: 'A',
    rules: {
      A: 'AB',
      B: 'A'
    },
    expectedStates: [
      'A',
      'AB',
      'ABA',
      'ABAAB',
      'ABAABABA',
      'ABAABABAABAAB',
      'ABAABABAABAABABAABABA',
      'ABAABABAABAABABAABABAABAABABAABAAB'
    ]
  },
  {
    name: 'Pythogoras Tree',
    initialState: '0',
    constants: '[,]',
    rules: {
      '0': '1[0]0',
      '1': '11'
    },
    expectedStates: [
      '0',
      '1[0]0',
      '11[1[0]0]1[0]0',
      '1111[11[1[0]0]1[0]0]11[1[0]0]1[0]0'
    ]
  },
  {
    name: 'Cantor set',
    initialState: 'A',
    rules: {
      'A': 'ABA',
      'B': 'BBB'
    },
    expectedStates: [
      'A',
      'ABA',
      'ABABBBABA',
      'ABABBBABABBBBBBBBBABABBBABA'
    ]
  },
  {
    name: 'Koch curve',
    initialState: 'F',
    constants: '+-',
    rules: {
      'F': 'F+F-F-F+F'
    },
    expectedStates: [
      'F',
      'F+F-F-F+F',
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F',
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F+' +
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F-' +
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F-' +
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F+' +
      'F+F-F-F+F+F+F-F-F+F-F+F-F-F+F-F+F-F-F+F+F+F-F-F+F'
    ]
  },
  {
    name: 'Sierpinski triangle',
    initialState: 'A',
    constants: '+-',
    rules: {
      A: '+B-A-B+',
      B: '-A+B+A-'
    },
    expectedStates: [
      'A',
      '+B-A-B+',
      '+-A+B+A--+B-A-B+--A+B+A-+'
    ]
  }
];

module.exports = Object.freeze(systems);