Add skeleton

helpers/test_helper.js

@@ -0,0 +1,13 @@
+const pool = require("../config");
+
+const usersInDb = async () => {
+  const users = await pool.query("SELECT * FROM USERS");
+  return users.rows;
+};
+
+const productsInDb = async () => {
+  const products = await pool.query("SELECT * FROM products");
+  return products.rows;
+};
+
+module.exports = { usersInDb, productsInDb };