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('language', 'Unit | Model | language', {
// Specify the other units that are required for this test.
needs: []
});
test('it exists', function(assert) {
let model = this.subject();
// let store = this.store();
assert.ok(!!model);
});