constraints

test.js

var constraint = require('constraint');
var assert = require('assert');

// create engine

var engine = constraint()
  .contains('whatever', 'red')
  .equals('some.thing.really.nested', 'works');

// need a custom rule?

function gt(a, b){
  return a > b;
}

engine.rule(gt, 'age', 21);

// object to test

var mock = {
  age: 26,
  whatever: 'redventures'
  some: {
    thing: {
      really: {
        nested: 'works'
      }
    }
  }
};

// any of the rules match

var a = engine.any(mock);

// all of the rules match

var b = engine.all(mock);

// results

assert(a, true);
assert(b, true);