test: add unit tests for DAOs

src/app/types/sqlite.type.ts

@@ -1,2 +1,37 @@
-export type QueryResult<T> = { rows: T[]};
-export type BatchOp = [string, any[]];
+import { Chain } from '../models/Chain';
+import { Establishment } from '../models/Establishment';
+
+export type QueryResult<T> = { rows: T[] };
+export type BatchOp = [string, any[]];
+
+export type PurchaseQueryResult = {
+  id: number;
+  price: number;
+  quantity: number;
+  date: number;
+  establishment_id: number;
+  product_id: number;
+  barcode: string;
+  product_image: string | null;
+  product_name: string;
+  address: string;
+  chain_id: number;
+  chain_image: string | null;
+  chain_name: string | null;
+};
+
+export type ProductEstablishmentQueryResult = {
+  address: string;
+  barcode: string;
+  chain_id: number;
+  chain_image: string | null;
+  chain_name: string | null;
+  establishment_id: number;
+  id: number;
+  product_id: number;
+  product_image: string | null;
+  product_name: string;
+};
+
+export type EstablishmentQueryResult = Omit<Establishment, 'chain'> &
+  Omit<Chain, 'id'> & { id: number; chain_id: number };