@incdevco/framework/aws/dynamo-db/update-expression/spec.js

node.js lambda framework

let Expect = require('chai').expect;
let Utilities = require('../../../utilities');

let ExpressionNames = require('../expression-names');
let ExpressionValues = require('../expression-values');
let UpdateExpression = require('./index.js');

describe('aws/dynamo-db/update-expression', function () {
  
  describe('render', function () {
    
    it('should render expession correctly', function () {
      
      let expression = new UpdateExpression();
      let names = new ExpressionNames();
      let values = new ExpressionValues();
      
      let expected = 'SET billing = billing, billing = billing, shipping = shipping, shipping = shipping';
      
      let model = {
        billing: {
          address: {
            street: 'billing_address_street',
            city: 'billing_address_city'
          }
        },
        shipping: {
          address: {
            street: 'shipping_address_street',
            city: 'shipping_address_city'
          }
        }
      };
      
      let keys = Utilities.keysDeep(model);
      
      keys.forEach((key) => {
        
        let name = names.name(key);
        
        let value = values.value(values.keyFromName(name), model[key]);
        
        expression.set(name + ' = ' + value);
        
      });
      
      Expect(keys).to.deep.equal([
        'billing.address.street',
        'billing.address.city',
        'shipping.address.street',
        'shipping.address.city'
      ], 'keys');
      
      Expect(names._names).to.deep.equal({
        'billing': 'billing',
        'shipping': 'shipping'
      }, 'names');
      
      Expect(expression.render()).to.equal(expected, 'result');
      
    });
    
  });
  
});