Add test for referenced authorizers

Author: Aleksander Dikanski

lib/stackops/apiGateway.js

@@ -225,11 +225,13 @@ module.exports = function(currentTemplate, aliasStackTemplates, currentAliasStac
 			const authorizerType = _.get(authorizer, 'Properties.Type');
 			if (authorizerType === 'TOKEN' || authorizerType === 'REQUEST') {
 				const uriParts = authorizer.Properties.AuthorizerUri['Fn::Join'][1];
-				const funcIndex = _.findIndex(uriParts, part => 
-					_.has(part, 'Fn::GetAtt') || _.startsWith(part, 'arn:aws:lambda'));
+				if(_.every(uriParts, part => !_.startsWith(part, 'arn:aws:lambda'))) {
+					const funcIndex = _.findIndex(uriParts, part => 
+						_.has(part, 'Fn::GetAtt') || _.startsWith(part, 'arn:aws:lambda'));
 
-				// Use the SERVERLESS_ALIAS stage variable to determine the called function alias
-				uriParts.splice(funcIndex + 1, 0, ':${stageVariables.SERVERLESS_ALIAS}');
+					// Use the SERVERLESS_ALIAS stage variable to determine the called function alias
+					uriParts.splice(funcIndex + 1, 0, ':${stageVariables.SERVERLESS_ALIAS}');
+				}
 			}
 
 			authorizer.Properties.Name = `${authorizer.Properties.Name}-${this._alias}`;
@@ -268,6 +270,7 @@ module.exports = function(currentTemplate, aliasStackTemplates, currentAliasStac
 			const aliasName = _.find(_.keys(aliases), alias => _.startsWith(alias, functionName));
 			const isExternalRef = _.startsWith(permission.Properties.FunctionName, 'arn:aws:lambda'); 
 
+			console.log('checking permission: ', name, JSON.stringify(permission), ' isExternalRef: ' + isExternalRef);
 			// Adjust references and alias permissions
 			if (!isExternalRef) {
 				permission.Properties.FunctionName = { Ref: aliasName };