CODEWITHSUNDEEP
amazon-web-servicesaws-lambda
Philip H
Philip H

Reputation: 360

How to test non-$LATEST version of AWS Lambda?

When I'm in AWS --> Lambda > Functions > myFunctionName, whenever I edit the Code and then run the Test (clicking on Test button to Left of Deploy), it is running the test on the old (deployed) version of the code. This happens whether or not I File > Save first.

This is easy to confirm by just adding a console.log("blah"); and seeing that it does not appear in the Test output.

The Test > Execution Results also confirm the test is running on $LATEST (see bolded section):

Response
null

Function Logs
START RequestId: <snip> Version: $LATEST
<snip>

Of course I can test my version by deploying it, but isn't there any way to test BEFORE I deploy? (Sorry if this is an ignorant question - I feel I'm missing something dead obvious...)

Upvotes: 2

Views: 2717

Answers (1)

samtoddler
samtoddler

Reputation: 9615

Assuming you are doing it via AWS Console.

In the console, only LATEST is available for editing.

enter image description here

And for testing the function you need to deploy a version.

Lambda function versions

You can change the function code and settings only on the unpublished version of a function. When you publish a version, the code and most of the settings are locked to maintain a consistent experience for users of that version

You can test separately by publishing versions Lambda function versions

You can Lambda function aliases for better handling these versions.

Configuring functions in the console

Upvotes: 2

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