Use memory mongo servrr while testing

.env.example

@@ -1,6 +1,5 @@
 PORT=3000
 MONGODB_URL=mongodb://127.0.0.1:27017/node-boilerplate
-MONGODB_TEST_URL=mongodb://127.0.0.1:27017/node-boilerplate-test
 JWT_SECRET=thisisasamplesecret
 JWT_ACCESS_EXPIRATION_MINUTES=30
 JWT_REFRESH_EXPIRATION_DAYS=30

package.json

@@ -48,6 +48,7 @@
     "husky": "^3.0.9",
     "jest": "^24.9.0",
     "lint-staged": "^9.4.2",
+    "mongodb-memory-server": "^6.0.1",
     "node-mocks-http": "^1.8.0",
     "nodemon": "^1.19.4",
     "prettier": "^1.18.2",

src/config/config.js

@@ -9,7 +9,7 @@ module.exports = {
   env: process.env.NODE_ENV,
   port: process.env.PORT,
   mongoose: {
-    url: process.env.NODE_ENV === 'test' ? process.env.MONGODB_TEST_URL : process.env.MONGODB_URL,
+    url: process.env.MONGODB_URL,
     options: { useCreateIndex: true, useNewUrlParser: true, useUnifiedTopology: true },
   },
   jwt: {

tests/utils/setupDatabase.js

@@ -1,21 +1,23 @@
 const mongoose = require('mongoose');
+const { MongoMemoryServer } = require('mongodb-memory-server');
 const config = require('../../src/config/config');
 
-const clearDatabase = async () => {
-  await Promise.all(Object.values(mongoose.connection.collections).map(async collection => collection.deleteMany()));
-};
+let mongod;
 
 const setupDatabase = () => {
   beforeAll(async () => {
-    await mongoose.connect(config.mongoose.url, config.mongoose.options);
+    mongod = new MongoMemoryServer();
+    const uri = await mongod.getUri();
+    await mongoose.connect(uri, config.mongoose.options);
   });
 
   beforeEach(async () => {
-    await clearDatabase();
+    await Promise.all(Object.values(mongoose.connection.collections).map(async collection => collection.deleteMany()));
   });
 
   afterAll(async () => {
     await mongoose.disconnect();
+    await mongod.stop();
   });
 };