import { Tree } from '@angular-devkit/schematics'; import { SchematicTestRunner } from '@angular-devkit/schematics/testing'; import * as path from 'path'; const collectionPath = path.join(__dirname, '../collection.json'); describe('my-schematic', () => { it('works', async () => { const runner = new SchematicTestRunner('schematics', collectionPath); const tree = await runner.runSchematicAsync('my-schematic', {}, Tree.empty()).toPromise(); expect(tree.files).toEqual(['/hello']); }); });