Update MongoDB.md (#7230)

jestjs · Oct 21, 2018 · 18dcf3c · 18dcf3c
1 parent 7be2a8e
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diff --git a/docs/MongoDB.md b/docs/MongoDB.md
@@ -22,13 +22,19 @@ const path = require('path');
 
 const fs = require('fs');
 
-const MongodbMemoryServer = require('mongodb-memory-server');
+const {MongoMemoryServer} = require('mongodb-memory-server');
 
 const globalConfigPath = path.join(__dirname, 'globalConfig.json');
 
-const mongoServer = new MongodbMemoryServer.MongoMemoryServer();
+const mongoServer = new MongoMemoryServer({
+  autoStart: false,
+});
+
+module.exports = async () => {
+  if (!mongod.isRunning) {
+    await mongod.start();
+  }
 
-module.exports = async function() {
   const mongoConfig = {
     mongoDBName: 'jest',
     mongoUri: await mongoServer.getConnectionString(),

diff --git a/website/versioned_docs/version-22.3/MongoDB.md b/website/versioned_docs/version-22.3/MongoDB.md
@@ -19,28 +19,48 @@ Here's an example of the GlobalSetup script
 
 ```js
 // setup.js
-const MongodbMemoryServer = require('mongodb-memory-server');
-
-const MONGO_DB_NAME = 'jest';
-const mongod = new MongodbMemoryServer.default({
-  instance: {
-    dbName: MONGO_DB_NAME,
-  },
-  binary: {
-    version: '3.2.19',
-  },
+const path = require('path');
+
+const fs = require('fs');
+
+const {MongoMemoryServer} = require('mongodb-memory-server');
+
+const globalConfigPath = path.join(__dirname, 'globalConfig.json');
+
+const mongoServer = new MongoMemoryServer({
+  autoStart: false,
 });
 
-module.exports = function() {
-  global.__MONGOD__ = mongod;
-  global.__MONGO_DB_NAME__ = MONGO_DB_NAME;
+module.exports = async () => {
+  if (!mongod.isRunning) {
+    await mongod.start();
+  }
+
+  const mongoConfig = {
+    mongoDBName: 'jest',
+    mongoUri: await mongoServer.getConnectionString(),
+  };
+
+  // Write global config to disk because all tests run in different contexts.
+  fs.writeFileSync(globalConfigPath, JSON.stringify(mongoConfig));
+
+  // Set reference to mongod in order to close the server during teardown.
+  global.__MONGOD__ = mongoServer;
 };
 ```
 
 Then we need a custom Test Environment for Mongo
 
 ```js
 // mongo-environment.js
+const NodeEnvironment = require('jest-environment-node');
+
+const path = require('path');
+
+const fs = require('fs');
+
+const globalConfigPath = path.join(__dirname, 'globalConfig.json');
+
 class MongoEnvironment extends NodeEnvironment {
   constructor(config) {
     super(config);
@@ -49,8 +69,10 @@ class MongoEnvironment extends NodeEnvironment {
   async setup() {
     console.log('Setup MongoDB Test Environment');
 
-    this.global.__MONGO_URI__ = await global.__MONGOD__.getConnectionString();
-    this.global.__MONGO_DB_NAME__ = global.__MONGO_DB_NAME__;
+    const globalConfig = JSON.parse(fs.readFileSync(globalConfigPath, 'utf-8'));
+
+    this.global.__MONGO_URI__ = globalConfig.mongoUri;
+    this.global.__MONGO_DB_NAME__ = globalConfig.mongoDBName;
 
     await super.setup();
   }

diff --git a/website/versioned_docs/version-23.0/MongoDB.md b/website/versioned_docs/version-23.0/MongoDB.md
@@ -23,13 +23,19 @@ const path = require('path');
 
 const fs = require('fs');
 
-const MongodbMemoryServer = require('mongodb-memory-server');
+const {MongoMemoryServer} = require('mongodb-memory-server');
 
 const globalConfigPath = path.join(__dirname, 'globalConfig.json');
 
-const mongoServer = new MongodbMemoryServer.MongoMemoryServer();
+const mongoServer = new MongoMemoryServer({
+  autoStart: false,
+});
+
+module.exports = async () => {
+  if (!mongod.isRunning) {
+    await mongod.start();
+  }
 
-module.exports = async function() {
   const mongoConfig = {
     mongoDBName: 'jest',
     mongoUri: await mongoServer.getConnectionString(),

diff --git a/website/versioned_docs/version-23.2/MongoDB.md b/website/versioned_docs/version-23.2/MongoDB.md
@@ -23,13 +23,19 @@ const path = require('path');
 
 const fs = require('fs');
 
-const MongodbMemoryServer = require('mongodb-memory-server');
+const {MongoMemoryServer} = require('mongodb-memory-server');
 
 const globalConfigPath = path.join(__dirname, 'globalConfig.json');
 
-const mongoServer = new MongodbMemoryServer.MongoMemoryServer();
+const mongoServer = new MongoMemoryServer({
+  autoStart: false,
+});
+
+module.exports = async () => {
+  if (!mongod.isRunning) {
+    await mongod.start();
+  }
 
-module.exports = async function() {
   const mongoConfig = {
     mongoDBName: 'jest',
     mongoUri: await mongoServer.getConnectionString(),