Issue #3: CRUD User Infrastructure

- WIP (unfinished and tests are failing)
- Create CRUD functions for database
- Create unit tests for data layer

Author: codebru

.gitignore

@@ -1 +1,2 @@
 node_modules
+.env

Components/Example/index.unit.test.js

@@ -0,0 +1,71 @@
+/* INCLUDES ******************************* */
+const dbConnect = require('../../Utils/Database/connection');
+/* **************************************** */
+
+/* DATABASE CONNECTION ******************** */
+const db = dbConnect.connect();
+/* **************************************** */
+
+/* FUNCTIONS ****************************** */
+async function create(passwordHash, email, bio, imageLink) {
+  const query = {
+    name: 'addUser',
+    text: 'INSERT INTO users(passwordhash, email, bio, imagelink, admin) VALUES ($1, $2, $3, $4, FALSE);',
+    values: [passwordHash, email, bio, imageLink],
+  };
+  try {
+    await db.none(query);
+    return true;
+  } catch (err) {
+    throw new Error(err);
+  }
+}
+
+async function read(email) {
+  const query = {
+    name: 'readUser',
+    text: 'SELECT * FROM users WHERE email = $1',
+    values: [email],
+  };
+  try {
+    return await db.one(query);
+  } catch (err) {
+    throw new Error(err);
+  }
+}
+
+async function update(email, field, value) {
+  const query = {
+    name: 'updateUser',
+    text: 'UPDATE users SET "$1" = "$2" WHERE email = "$3";',
+    values: [field, value, email],
+  };
+  try {
+    await db.none(query);
+    return true;
+  } catch (err) {
+    throw new Error(err);
+  }
+}
+
+async function remove() {
+  const query = {
+    name: 'updateUser',
+    text: 'DELETE FROM users WHERE email = $1;',
+    values: [email],
+  };
+  try {
+    await db.none(query);
+    return true;
+  } catch (err) {
+    throw new Error(err);
+  }
+}
+
+/* **************************************** */
+
+/* EXPORTS ******************************** */
+module.exports = {
+  create, read, update, remove,
+};
+/* **************************************** */

Components/User/data.js

@@ -0,0 +1,30 @@
+const data = require('./data');
+
+data.remove('[email protected]');
+
+it('creates a user', async () => {
+  const response = await data.create('1234', '[email protected]', 'This is my bio', '');
+  expect(response).toEqual(true);
+});
+
+it('reads a user', async () => {
+  const response = await data.read('[email protected]');
+  expect(response.bio).toEqual('This is my bio');
+});
+
+it('updates a user', async () => {
+  await data.create('bio', 'This is my new bio');
+  const response = await data.read('[email protected]');
+  expect(response.bio).toEqual('This is my new bio');
+});
+
+it('deletes a user', async () => {
+  let errors = 0;
+  await data.create('1234', '[email protected]', 'This is my bio', '');
+  try {
+    await data.read('[email protected]');
+  } catch (err) {
+    errors += 1;
+  }
+  expect(errors).toEqual(1);
+});

Components/User/data.test.js

@@ -0,0 +1,31 @@
+/* INCLUDES ******************************* */
+const pgPromise = require('pg-promise');
+const dotenv = require('dotenv');
+
+const pg = pgPromise();
+dotenv.config();
+/* **************************************** */
+
+/* CONSTANTS ****************************** */
+const {
+  DB_USER, DB_PASS, DB_HOST, DB_PORT, DB_NAME,
+} = process.env;
+
+const connectionInfo = {
+  host: DB_HOST,
+  port: DB_PORT,
+  database: DB_NAME,
+  user: DB_USER,
+  password: DB_PASS,
+};
+/* **************************************** */
+
+/* FUNCTIONS ****************************** */
+function connect() {
+  return pg(connectionInfo);
+}
+/* **************************************** */
+
+/* EXPORTS ******************************** */
+module.exports = { connect };
+/* **************************************** */

Utils/Database/connection.js

@@ -42,6 +42,7 @@
     "helmet": "^3.19.0",
     "node-fetch": "^2.6.0",
     "passport": "^0.4.0",
-    "passport-local": "^1.0.0"
+    "passport-local": "^1.0.0",
+    "pg-promise": "^8.7.5"
   }
 }