Allow Port Override (#12)

Allow Port Override

Author: vladgolubev

jest-dynamodb-config.js

@@ -6,5 +6,6 @@ module.exports = {
       AttributeDefinitions: [{AttributeName: 'id', AttributeType: 'S'}],
       ProvisionedThroughput: {ReadCapacityUnits: 1, WriteCapacityUnits: 1}
     }
-  ]
+  ],
+  port: 8000
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@shelf/jest-dynamodb",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "description": "Run your tests using Jest & DynamoDB local",
   "license": "MIT",
   "repository": "shelfio/jest-dynamodb",

readme.md

@@ -32,7 +32,8 @@ module.exports = {
       ProvisionedThroughput: {ReadCapacityUnits: 1, WriteCapacityUnits: 1}
     }
     // etc
-  ]
+  ],
+  port: 8000
 };
 ```
 
@@ -70,7 +71,7 @@ it('should insert item into table', async () => {
 <details>
 <summary>UnknownError: Not Found</summary>
 
-Perhaps something is using your port 8000.
+Perhaps something is using your port specified in `jest-dynamodb-config.js`.
 
 </details>
 

setup.js

@@ -2,19 +2,24 @@ const {resolve} = require('path');
 const cwd = require('cwd');
 const DynamoDB = require('aws-sdk/clients/dynamodb');
 const DynamoDbLocal = require('dynamodb-local');
+const defaultPort = 8000;
+let {port} = require(resolve(cwd(), 'jest-dynamodb-config.js'));
+if (typeof port === 'undefined' || port === null) {
+  port = defaultPort;
+}
 
 // aws-sdk requires access and secret key to be able to call DDB
 process.env.AWS_ACCESS_KEY_ID = 'access-key';
 process.env.AWS_SECRET_ACCESS_KEY = 'secret-key';
 
 const dynamoDB = new DynamoDB({
-  endpoint: 'localhost:8000',
+  endpoint: 'localhost:' + port,
   sslEnabled: false,
   region: 'local-env'
 });
 
 module.exports = async function() {
-  global.__DYNAMODB__ = await DynamoDbLocal.launch(8000, null, ['-sharedDb']);
+  global.__DYNAMODB__ = await DynamoDbLocal.launch(port, null, ['-sharedDb']);
 
   await createTables();
 };