Utilities for testing LoopBack applications
npm install loopback-testingnext---
#loopback-testing
Utilities for testing LoopBack apps
The following helpers are designed to generate [mocha] tests against
LoopBack apps.
1. npm install loopback-testing --save-dev
2. Assuming you started with a clean template/project generated by slc loopback
1. If you have mocha installed as a global npm module that's great! Simply update
``
{
...
"scripts": {
...
"test": "mocha"
}
}
2. Otherwise, you can utilize the mocha library within the testing module:
`
{
...
"scripts": {
...
"test": "./node_modules/loopback-testing/node_modules/.bin/mocha"
}
}
3. Run to execute any tests under the test directory.
Below is a simple LoopBack app.
`js`
var loopback = require('loopback');
var app = loopback();
var Product = app.model('product');
Product.attachTo(loopback.memory());
Use the loopback-testing module to generate mocha tests.
`js
var lt = require('loopback-testing');
var assert = require('assert');
var app = require('../server/server.js'); //path to app.js or server.js
describe('/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));
});
});
});
`
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.
`js
var TestDataBuilder = require('loopback-testing').TestDataBuilder;
var ref = TestDataBuilder.ref;
// The context object to hold the created models.
// You can use this in mocha test instead.
var context = {};
var ref = TestDataBuilder.ref;
new TestDataBuilder()
.define('application', Application, {
pushSettings: { stub: { } }
})
.define('device', Device, {
// use the value of application's id
// the value is resolved at build time
appId: ref('application.id'),
deviceType: 'android'
})
.define('notification', Notification)
.buildTo(context, function(err) {
// test models are available as
// context.application
// context.device
// context.notification
});
``