#loopback-testing

Utilities for testing LoopBack apps

overview

The following helpers are designed to generate [mocha] tests against LoopBack apps.

install

1. npm install loopback-testing --save-dev
2. Assuming you started with a clean template/project generated by slc loopback
3. If you have mocha installed as a global npm module that's great! Simply update <your_project>/package.json with:

```
{
...
"scripts": {
...
"test": "mocha"
}
}
```

2. Otherwise, you can utilize the mocha library within the loopback-testing testing module:

```
{
...
"scripts": {
...
"test": "./node_modules/loopback-testing/node_modules/.bin/mocha"
}
}
```

3. Run npm test to execute any tests under the test directory.

basic usage

Below is a simple LoopBack app.

varloopback=require('loopback');varapp=loopback();varProduct=app.model('product');Product.attachTo(loopback.memory());

Use the loopback-testing module to generate mocha tests.

varlt=require('loopback-testing');varassert=require('assert');varapp=require('../server/server.js');//path to app.js or server.jsdescribe('/products',function(){lt.beforeEach.withApp(app);lt.describe.whenCalledRemotely('GET','/products',function(){lt.it.shouldBeAllowed();it('should have statusCode 200',function(){assert.equal(this.res.statusCode,200);});lt.beforeEach.givenModel('product');it('should respond with an array of products',function(){assert(Array.isArray(this.res.body));});});});

building test data

Use TestDataBuilder to build many Model instances in one async call. Specify only properties relevant to your test, the builder will pre-fill remaining required properties with sensible defaults.

varTestDataBuilder=require('loopback-testing').TestDataBuilder;varref=TestDataBuilder.ref;// The context object to hold the created models.// You can use `this` in mocha test instead.varcontext={};varref=TestDataBuilder.ref;newTestDataBuilder().define('application',Application,{pushSettings: {stub: {}}}).define('device',Device,{// use the value of application's id// the value is resolved at build timeappId: ref('application.id'),deviceType: 'android'}).define('notification',Notification).buildTo(context,function(err){// test models are available as// context.application// context.device// context.notification});