events.js
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// Copyright IBM Corp. 2014,2016. All Rights Reserved.
// Node module: loopback-datasource-juggler
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
'use strict';
var should = require('./init.js');
describe('events', function() {
beforeEach(function(done) {
var test = this;
this.db = getSchema();
this.TestModel = this.db.define('TestModel');
this.db.automigrate(function(err) {
if (err) return done(err);
test.TestModel.create(function(err, inst) {
if (err) return done(err);
test.inst = inst;
done();
});
});
this.shouldEmitEvent = function(eventName, listener, done) {
this.TestModel.on(eventName, function() {
listener.apply(this, arguments);
done();
});
};
});
describe('changed', function() {
it('should be emitted after save', function(done) {
var model = new this.TestModel({name: 'foobar'});
this.shouldEmitEvent('changed', assertValidChangedArgs, done);
model.save();
});
it('should be emitted after upsert', function(done) {
this.shouldEmitEvent('changed', assertValidChangedArgs, done);
this.TestModel.upsert({name: 'batbaz'});
});
it('should be emitted after create', function(done) {
this.shouldEmitEvent('changed', assertValidChangedArgs, done);
this.TestModel.create({name: '...'});
});
it('should be emitted after updateAttributes', function(done) {
var test = this;
this.TestModel.create({name: 'bazzy'}, function(err, model) {
// prevent getting the changed event from "create"
process.nextTick(function() {
test.shouldEmitEvent('changed', assertValidChangedArgs, done);
model.updateAttributes({name: 'foo'});
});
});
});
});
describe('deleted', function() {
it('should be emitted after destroy', function(done) {
this.shouldEmitEvent('deleted', assertValidDeletedArgs, done);
this.inst.destroy();
});
it('should be emitted after deleteById', function(done) {
this.shouldEmitEvent('deleted', assertValidDeletedArgs, done);
this.TestModel.deleteById(this.inst.id);
});
});
describe('deletedAll', function() {
it('should be emitted after destroyAll', function(done) {
this.shouldEmitEvent('deletedAll', function(where) {
where.name.should.equal('foo');
}, done);
this.TestModel.destroyAll({name: 'foo'});
});
});
});
function assertValidChangedArgs(obj) {
obj.should.have.property('id');
}
function assertValidDeletedArgs(id) {
id.should.be.ok;
}