feat(MongoInstance): add a new option instance.ip for binding mongod instance to specified ip addresses (by default 127.0.0.1)

Related #73

Author: nodkz

README.md

@@ -47,6 +47,7 @@ All options are optional.
 const mongod = new MongodbMemoryServer({
   instance: {
     port?: ?number, // by default choose any free port
+    ip?: string, // by default '127.0.0.1', for binding to all IP addresses set it to `::,0.0.0.0`, 
     dbName?: string, // by default generate random dbName
     dbPath?: string, // by default create in temp directory
     storageEngine?: string, // by default `ephemeralForTest`

src/MongoMemoryServer.js

@@ -12,6 +12,7 @@ tmp.setGracefulCleanup();
 export type MongoMemoryServerOptsT = {
   instance: {
     port?: ?number,
+    ip?: string, // for binding to all IP addresses set it to `::,0.0.0.0`, by default '127.0.0.1'
     dbPath?: string,
     dbName?: string,
     storageEngine?: string,

src/util/MongoInstance.js

@@ -10,6 +10,7 @@ export type MongodOps = {
   // instance options
   instance: {
     port: number,
+    ip?: string, // for binding to all IP addresses set it to `::,0.0.0.0`, by default '127.0.0.1'
     storageEngine?: string,
     dbPath: string,
     debug?: boolean | Function,
@@ -74,9 +75,10 @@ export default class MongodbInstance {
   }
 
   prepareCommandArgs(): string[] {
-    const { port, storageEngine, dbPath } = this.opts.instance;
+    const { ip, port, storageEngine, dbPath } = this.opts.instance;
 
     const result = [];
+    result.push('--bind_ip', ip || '127.0.0.1');
     if (port) result.push('--port', port.toString());
     if (storageEngine) result.push('--storageEngine', storageEngine);
     if (dbPath) result.push('--dbpath', dbPath);

src/util/__tests__/MongoInstance-test.js

@@ -25,6 +25,8 @@ describe('MongoInstance', () => {
       },
     });
     expect(inst.prepareCommandArgs()).toEqual([
+      '--bind_ip',
+      '127.0.0.1',
       '--port',
       '27333',
       '--storageEngine',