Unit testing models with associations/relationships fail

[f3ndot]

[ This refers to v0.1.7 ]

When unit testing a model that makes use of DS.belongsTo() the createRecord() fails with the following error:

Error: No model was found for 'Client'

It appears that in order to create a record of a model, it expects its associated or related model to already exist. What's going on?

---

Here are the models and test

/app/models/client.js:

export default DS.Model.extend({
  name: DS.attr('string'),
  invoices: DS.hasMany('Invoice'),
});

/app/models/invoice.js:

export default DS.Model.extend({
  amount: DS.attr('number'),
  discountTotal: DS.attr('number'),

  totalAmount: function() {
    return this.get('amount') - this.get('discountTotal');
  }.property('amount', 'discountTotal'),

  client: DS.belongsTo('Client'),
});

tests/models/invoice.js:

import { test, moduleForModel } from 'ember-qunit';

moduleForModel('invoice', 'Invoice Model');

test('totalAmount computed property considers discounts', function() {
  // this.subject() is aliased more or less to createRecord() for the
  // invoice model. See module-for-model.js in ember-qunit.
  //
  // Attempting to run the below function throws the error.
  var invoice = this.subject({
    id: 1,
    amount: 50.0
    discountTotal: 10.0
  });

  equal(invoice.get('totalAmount'), 40.0);
});

[f3ndot]

It's worth mentioning that there are no FIXTURES array defined for the models, since thus far testing I've done has been using an api-stub server in integration testing.

Not sure if that's a contributing factor.

[pangratz]

You need to add needs: ["model:client"] to your moduleForModel, see http://emberjs.jsbin.com/tajegefa/1/edit:

moduleForModel('invoice', 'Invoice Model', {
  needs: ["model:client"]
});

---

Also the naming convention is to specify the classes for the relationship with lowerCamelCase, so it's client and not Client.

[stefanpenner]

the "needs" model will by somewhat crippled though, since it wont be setup correctly. But it should work for simple unit tests.

[f3ndot]

@pangratz Adding needs: [] has no effect.

[f3ndot]

@pangratz Ah, I just saw your edit about naming conventions. I saw some example code that used TitleCase and that tripped me up.

Changing to camelCase, so DS.belongsTo('client') in this case, fixes the problem.

Thank you!

[Subodha555]

**import { moduleForModel, test } from 'ember-qunit';
import Ember from 'ember';
moduleForModel('trade/business-entities/order-params','Order-params-test',{

});

test('ordVal', function() {

var ctrl = this.subject();

assert.equal(ctrl.get('ordSide'),1,'should be 1');
});**

This is my test code. I get following error when I run this.

beforeEach failed on ordVal: WebSocketManager.default is not a constructor