In the previous chapter, we built a package out of the
ReactiveTimer object. A good package should always contain unit tests so that people can run them and be sure that changes to that package don't break its functionality.
Meteor provides a simple unit test tool for packages, called
TinyTest, which we will use to test our package:
meteor-book:reactive-timerpackage, which we built in the previous chapter, to the
my-meteor-blog/packagesfolder of our app. This way, we can make changes to the package, as Meteor will prefer the package in the
packagesfolder over one in its package servers. If you removed the package, simply add it back using the following command:
$ meteor add meteor-book:reactive-timer ...