How To Test your AWS Lambda Locally with SAM

AWS Lambda functions are extremely powerful FaaS components. In this video, I teach you how to use Serverless Application Model (SAM) cli to test your functions on your local machine before pushing your code changes.

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[BeABetterDev]

Looking to become an expert on AWS Lambda? Check out my new course: AWS Lambda - A Practical Guide

[rulisastra]

how simple! it means youve made a great tutorial!

but one question tho, do you configure the AWS secret id or else in you local??

[JKhalaf]

Now that we have a CDK, is it possible to test our AWS Lambda locally with the CDK? Can you please do a video on that (assuming that is possible).

[MayAlexanderVillamilLozano]

Hi, can this tool be used to test a Lambda defined as a container image?

[adamzerner]

Hm, why use SAM to do this instead of using a more traditional tool for unit testing like Jest?

[cezaraugustomezzalira]

Thank you for sharing this knowledge!
It helped me to create my first Lambda Function and test without have any AWS account.

[tiagoaicapital]

Great video... please can you make a video on how we can re-used lambda function via terraform from visual studio? 🙏

[GLu-tbpb]

what happens if my API Gateway set up contradicts the YAML - If my Gateway already has [GET, /help to call a specific Lambda], will deploying this override the existing options?

[MohamadOmar-oiur]

That was so quick, enough, clear, and perfect to learn from !!
Just amazing man thanks a lot.
Do you know that I've been looking for this explanation 3 years ago for several months and nothing found related !!
You save my life now, I would like to save this video as reference
BIG LIKE!

[ashay]

hi, how can I invoke local lambda from the local api gateway ?

[ArbitraryZer]

What if the lambda relies on a dynamo db table? Doesnt work in this case unless something else is configured and its unclear

[二一-gp]

sam local invoke error:failed to deserialize response from. help ❤❤❤

[fb-guer]

It would be nice to make a video that includes token authorization to access the endpoint

[MarcosVSilva-cjyf]

Great video mate! I would love a python version too. You are a great source of knowledge for me.

[TheOmegaX]

Great Video!!
Is there a Python version too?

[sudhansusahoo]

It will be great if you can provide a video using Python.

[alanwill]

Thanks for posting this. Do you have any thoughts on how to perform local testing with a SAM template that relies on other AWS services, i.e. mocking say S3 or SQS or some other service locally. Also, how would this testing work with a nested SAM stack? I've struggled with both these examples hence the questions :)

[leftg]

I've been trying to set up for ages now - on a mac arm64 which I think causes issues. Everything else works fine aws cli, aws sam cli, my docker works fine with other applications but i get not able to create docker image. I've tried all solutions re modifying the architecture in the local debug config. Is driving me nuts!

[mauriciopareja]

Is possible download lambda function aws tha was create node js 8.0 and run locally with SAM? thaks

[mroobert]

How is this working without using 'sam build' before using 'sam invoke'?