Adds support for multiple twitter auths options (#2256)

* Adds support for multiple twitter auths options

* Adds user test

spec/TwitterAuth.spec.js

@@ -0,0 +1,50 @@
+let twitter = require('../src/authDataManager/twitter');
+
+describe('Twitter Auth', () => {
+  it('should use the proper configuration', () => {
+    // Multiple options, consumer_key found
+    expect(twitter.handleMultipleConfigurations({
+      consumer_key: 'hello',
+    }, [{
+      consumer_key: 'hello'
+    }, {
+      consumer_key: 'world'
+    }]).consumer_key).toEqual('hello')
+    
+    // Multiple options, consumer_key not found
+    expect(function(){ 
+      twitter.handleMultipleConfigurations({
+        consumer_key: 'some',
+      }, [{
+        consumer_key: 'hello'
+      }, {
+        consumer_key: 'world'
+      }]);
+    }).toThrow();
+
+    // Multiple options, consumer_key not found
+    expect(function(){ 
+      twitter.handleMultipleConfigurations({
+        auth_token: 'token',
+      }, [{
+        consumer_key: 'hello'
+      }, {
+        consumer_key: 'world'
+      }]);
+    }).toThrow();
+
+    // Single configuration and consumer_key set
+    expect(twitter.handleMultipleConfigurations({
+      consumer_key: 'hello',
+    }, {
+      consumer_key: 'hello'
+    }).consumer_key).toEqual('hello');
+
+    // General case, only 1 config, no consumer_key set
+    expect(twitter.handleMultipleConfigurations({
+      auth_token: 'token',
+    }, {
+      consumer_key: 'hello'
+    }).consumer_key).toEqual('hello');
+  });
+});