src/items/items.service.spec.ts

@@ -0,0 +1,19 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { ItemsService } from './items.service';
+
+describe('ItemsService', () => {
+  let service: ItemsService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [ItemsService],
+    }).compile();
+    service = module.get<ItemsService>(ItemsService);
+  });
+
+  it('creates and retrieves an item', () => {
+    const item = service.create('Widget', 'A test widget');
+    expect(item.id).toBe(1);
+    expect(service.findOne(1).name).toBe('Widget');
+  });
+});