fireproof
Version:
Promises for Firebase objects.
174 lines (115 loc) • 4.1 kB
JavaScript
;
var url = require('url');
describe('Stats', function() {
var statsRef;
beforeEach(function(done) {
statsRef = new Fireproof(firebase).child('statsRef');
setTimeout(done, 1); // This is necessary to allow all stats events from past tests to clear the event queue before starting the next test. Works around strange timing issues on Windows.
});
describe('#reset', function() {
it('resets all captured statistics to 0', function() {
Fireproof.stats.reset();
Fireproof.stats.resetListeners();
expect(Object.keys(Fireproof.stats.operationLog).length).to.equal(0);
});
});
describe('when Firebase operations happen', function() {
var startFn, finishFn;
it('emits "start" and "finish" events for them', function(done) {
startFn = Fireproof.stats.on('start', function(event) {
expect(event.type).to.equal('write');
});
finishFn = Fireproof.stats.on('finish', function(event) {
expect(event.start).to.be.defined;
expect(event.finish).to.be.defined;
expect(event.type).to.equal('write');
done();
});
statsRef.child('a').set(true);
});
after(function() {
Fireproof.stats.off('start', startFn);
Fireproof.stats.off('finish', finishFn);
Fireproof.stats.reset();
Fireproof.stats.resetListeners();
});
});
describe('given a set of operations', function() {
before(function() {
this.timeout(5000);
return Promise.all([
statsRef.child('a').set(true),
statsRef.child('b').set(true),
statsRef.child('b2').remove(),
statsRef.child('c').update({ foo: 'bar '}),
statsRef.child('x').on('value', function() {}).then(function() {}),
statsRef.child('y').on('value', function() {}).then(function() {}),
statsRef.child('z').on('value', function() {}).then(function() {})
]);
});
after(function() {
statsRef.child('a').off('value');
statsRef.child('b').off('value');
statsRef.child('c').off('value');
});
describe('#getCounts', function() {
it('correctly tallies the number of those operations', function() {
var stats = Fireproof.stats.getCounts();
expect(stats).to.deep.equal({
read: 3,
write: 3,
update: 1
});
});
});
describe('#getPathCounts', function() {
it('correctly tallies the number of operations per path', function() {
var pathStats = Fireproof.stats.getPathCounts();
var correctedPathStats = Object.keys(pathStats)
.reduce(function(acc, kind) {
acc[kind] = Object.keys(pathStats[kind])
.reduce(function(kindAccumulator, path) {
kindAccumulator[url.parse(path).pathname] = pathStats[kind][path];
return kindAccumulator;
}, {});
return acc;
}, {});
expect(correctedPathStats).to.deep.equal({
read: {
'/statsRef/x': 1,
'/statsRef/y': 1,
'/statsRef/z': 1
},
write: {
'/statsRef/a': 1,
'/statsRef/b': 1,
'/statsRef/b2': 1,
},
update: {
'/statsRef/c': 1
}
});
});
});
describe('#getListeners', function() {
it('returns an object counting the current listeners by path', function() {
var listeners = Fireproof.stats.getListeners();
var correctedPathListeners = Object.keys(listeners)
.reduce(function(acc, path) {
acc[url.parse(path).pathname] = listeners[path];
return acc;
}, {});
expect(correctedPathListeners).to.deep.equal({
'/statsRef/x': 1,
'/statsRef/y': 1,
'/statsRef/z': 1
});
});
});
describe('#getListenerCount', function() {
it('returns the total number of current listeners', function() {
expect(Fireproof.stats.getListenerCount()).to.equal(3);
});
});
});
});