I am writing a module supporting Meteor Tracker, but I am unable to test it. I added meteor-standalone-tracker
as dev dependency, and wrote a test case, but the autorun
function is called only once.
For example, I wrote a dummy test inspired from the docs as follow
import assert from 'assert';
import Tracker from 'trackr';
describe('Testing Tracker', () => {
it('should do as expected', () => {
var favoriteFood = "apples";
var favoriteFoodDep = new Tracker.Dependency;
var getFavoriteFood = function () {
favoriteFoodDep.depend();
return favoriteFood;
};
var setFavoriteFood = function (newValue) {
favoriteFood = newValue;
favoriteFoodDep.changed();
};
console.log("GET:" , getFavoriteFood());
// "apples"
var handle = Tracker.autorun(function () {
console.log("Your favorite food is " + getFavoriteFood());
});
// "Your favorite food is apples"
setFavoriteFood("mangoes");
// "Your favorite food is mangoes"
setFavoriteFood("peaches");
// "Your favorite food is peaches"
setFavoriteFood("bananas");
// "Your favorite food is bananas"
handle.stop();
setFavoriteFood("cake");
// (nothing printed)
});
});
The the only output I get is this :
console.log test/tracker.spec.js:27
GET: apples
console.log test/tracker.spec.js:31
Your favorite food is apples
What am I missing?
My current solution is to flush all calculations.
Tracker.flush();
This will force the autorun
functions with dependencies that have changed to be called.