Migrate d3js to v4 and correct d3js visualisations i.e. bug 3.20. Breadcrumb navigation for the language treemap has been improved
import { moduleForModel, test } from 'ember-qunit';
moduleForModel('theme', 'Unit | Serializer | theme', {
// Specify the other units that are required for this test.
needs: ['serializer:theme']
});
// Replace this with your real tests.
test('it serializes records', function(assert) {
let record = this.subject();
let serializedRecord = record.serialize();
assert.ok(serializedRecord);
});