Propagate exception trace on error requiring; accepts event payload as external file, solves #1, solves #3

Author: daniel-aranda

lambda-broken-js.js

@@ -0,0 +1,2 @@
+exports.hello = function(event, context) {
+    context.succeed('world');

lambda-sandbox-run.js

@@ -28,7 +28,12 @@ exports.run = function(lambdaName, handlerName, eventPayLoad){
     handlerName = handlerName || 'handler';
 
     if( eventPayLoad ){
-        eventPayLoad = JSON.parse(eventPayLoad);
+        if( eventPayLoad.indexOf('file://') === 0 ){
+            filePath = eventPayLoad.substring(7);
+            eventPayLoad = require(process.cwd() + '/' + filePath);
+        }else{
+            eventPayLoad = JSON.parse(eventPayLoad);
+        }
     }else{
         eventPayLoad = {};
     }
@@ -37,6 +42,8 @@ exports.run = function(lambdaName, handlerName, eventPayLoad){
         lambdaFunction = require(process.cwd() + '/' + lambdaName + '.js');
     }catch(exception){
         console.error('Invalid module: ' + lambdaName);
+        console.log(exception);
+        console.trace(exception);
         return null;
     }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "aws-lambda-function-sandbox-runner",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "Run AWS Lambda Functions on your local computers, for testing purposes",
   "main": "lambda-sandbox-run.js",
   "scripts": {

tests/fixtures/event.json

@@ -0,0 +1 @@
+{"someProperty":"works"}

tests/lambda-sandbox-run-spec.js

@@ -19,6 +19,16 @@ describe('AWS Lambda Function', function (){
         });
     });
 
+    describe('send event pay load from a file', function () {
+        it('should call succeed and parse JSON', function (){
+            spyOn(lambdaRunner.aws, 'succeed').andCallThrough();
+            var event = 'file://tests/fixtures/event.json';
+            lambdaRunner.run('lambda-example', 'parseEvent', event);
+            expect(lambdaRunner.aws.succeed).toHaveBeenCalledWith('works');
+        });
+    });
+
+
     describe('failed execution', function () {
         it('should call fail', function (){
             spyOn(lambdaRunner.aws, 'fail').andCallThrough();
@@ -38,9 +48,23 @@ describe('AWS Lambda Function', function (){
     describe('invalid lambda function', function () {
         it('should call console.error with invalid module', function (){
             spyOn(console, 'error');
+            spyOn(console, 'trace');
             var lambdaName = 'random';
             lambdaRunner.run(lambdaName);
             expect(console.error).toHaveBeenCalledWith('Invalid module: ' + lambdaName);
+            var exception = {code : 'MODULE_NOT_FOUND'};
+            expect(console.trace).toHaveBeenCalledWith(exception);
+        });
+    });
+
+    describe('broken lambda function', function () {
+        it('should call console.error with invalid module', function (){
+            spyOn(console, 'error');
+            spyOn(console, 'trace');
+            var lambdaName = 'lambda-broken-js';
+            lambdaRunner.run(lambdaName);
+            expect(console.error).toHaveBeenCalledWith('Invalid module: ' + lambdaName);
+            expect(console.trace).toHaveBeenCalled();
         });
     });