An example of creating a unit test for an Arc.js action

arcjsUnitTestExample.js

/**
 * This is a scaffold for unit tests for the custom function for
 * `embedded.commerce.carts.addItem.before`.
 * Modify the test conditions below. You may:
 *  - add special assertions for code actions from Simulator.assert
 *  - create a mock context with Simulator.context() and modify it
 *  - use and modify mock Mozu business objects from Simulator.fixtures
 */

'use strict';

var Simulator = require('mozu-action-simulator');
var assert = Simulator.assert;
var _ = require('underscore');
var actionName = 'embedded.commerce.carts.addItem.before';

describe('embedded.commerce.carts.addItem.before implementing embedded.commerce.carts.addItem.before', function () {

  var action;

  before(function () {
    action = require('../src/domains/commerce.carts/embedded.commerce.carts.addItem.before');
  });

  it('runs successfully', function(done) {

    var callback = function(err) {
      assert.ok(!err, "Callback was called with an error: " + err);
      // more assertions
      done();
    };

    var context = Simulator.context(actionName, callback);
    // modify context as necessary


    Simulator.simulate(actionName, action, context, callback);
  });
  
  it('checks incoming product for hazard indicator and then removes hazardous items from the cart if the incoming item is hazardous', function(done) {
     var callback = function(err) {
      assert.ok(!err, "Callback was called with an error: " + err);
      // more assertions
      done();
    };
    //Test setup
    var context = Simulator.context(actionName, callback);
    var cart = context.get.cart();
    var cartItem = context.get.cartItem();
    var cartItemsCount = cart.items.length;
    cart.items[0].product.properties.push({
        "attributeFQN": "tenant~hazardous",
        "name": "Hazardous",
        "dataType": "Bool",
        "isMultiValue": false,
        "values": [
            {
                "value": true
            }
        ]
    });
    
    cartItem.product.properties.push({
        "attributeFQN": "tenant~hazardous",
        "name": "Hazardous",
        "dataType": "Bool",
        "isMultiValue": false,
        "values": [
            {
                "value": true
            }
        ]
    });    
    
    if(cart.items.length > 1) {
        var hazardousCart = false;
        var hazardousIds = [];
        _.each(cart.items, function(item) {
            _.each(item.product.properties, function(property) {
              if(_.contains(property, 'tenant~hazardous')) {
                hazardousCart = true;
                hazardousIds.push(item.id)   
              } 
            });
        });
        //Extra unit test code -- not needed for main Arc.js action
        
        if(hazardousCart) {
            var removedItems = 0;
            var newCartItems = cart.items.filter(function(item) {
                if(_.contains(hazardousIds, item.id)) {
                    removedItems++;
                    return false;
                } else {
                    return true;
                }
            });  
        }
        context.exec.removeItem = function() {
            cart.items = newCartItems;
            assert.equal(cart.items.length, (cartItemsCount - removedItems));
        };
    } 
    
    Simulator.simulate(actionName, action, context, callback);
  });
  
});