gristlabs_grist-core/test/client/lib/ObservableSet.js

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var assert = require('chai').assert;
var ko = require('knockout');
var clientUtil = require('../clientUtil');
var ObservableSet = require('app/client/lib/ObservableSet');
describe('ObservableSet', function() {
clientUtil.setTmpMochaGlobals();
it("should keep track of items", function() {
var set = ObservableSet.create();
assert.equal(set.count(), 0);
assert.deepEqual(set.all(), []);
var obs1 = ko.observable(true), val1 = { foo: 5 },
obs2 = ko.observable(false), val2 = { foo: 17 };
var sub1 = set.add(obs1, val1),
sub2 = set.add(obs2, val2);
assert.equal(set.count(), 1);
assert.deepEqual(set.all(), [val1]);
obs1(false);
assert.equal(set.count(), 0);
assert.deepEqual(set.all(), []);
obs2(true);
assert.equal(set.count(), 1);
assert.deepEqual(set.all(), [val2]);
obs1(true);
assert.equal(set.count(), 2);
assert.deepEqual(set.all(), [val1, val2]);
sub1.dispose();
assert.equal(set.count(), 1);
assert.deepEqual(set.all(), [val2]);
assert.equal(obs1.getSubscriptionsCount(), 0);
assert.equal(obs2.getSubscriptionsCount(), 1);
sub2.dispose();
assert.equal(set.count(), 0);
assert.deepEqual(set.all(), []);
assert.equal(obs1.getSubscriptionsCount(), 0);
assert.equal(obs2.getSubscriptionsCount(), 0);
});
});