test: add unit tests for DAOs

src/app/dao/ProductEstablishmentDAO.ts

@@ -5,6 +5,7 @@ import { ProductEstablishment } from '../models/ProductEstablisment';
 import { Chain } from '../models/Chain';
 import { DBProductEstablishment } from '../models/db/DBProductEstablishment';
 import { ComposedDAO } from './ComposedDAO';
+import { ProductEstablishmentQueryResult } from '../types/sqlite.type';
 
 @Injectable({
   providedIn: 'root',
@@ -23,7 +24,7 @@ export class ProductEstablishmentDAO extends ComposedDAO<
     JOIN product p ON p.id = pe.product_id 
     JOIN establishment e ON e.id = pe.establishment_id 
     JOIN chain c ON c.id = e.chain_id;`,
-      'pe'
+      'pe',
     );
   }
 
@@ -40,16 +41,3 @@ export class ProductEstablishmentDAO extends ComposedDAO<
     return new ProductEstablishment(product, establishment, qR.id);
   }
 }
-
-type ProductEstablishmentQueryResult = {
-  address: string;
-  barcode: string;
-  chain_id: number;
-  chain_image: string | null;
-  chain_name: string;
-  establishment_id: number;
-  id: number;
-  product_id: number;
-  product_image: string | null;
-  product_name: string;
-};