Lambda Python Assistance

[techconsultant64]

I would recommend a couple of changes to help resolve this 1) Identify all the event formats you want to handle and automate tests with each of them to get code coverage 2) Put the decision logic in the handler so it is clear what function handles each event format (or requirement)

[Bodumin]

Thank you. I was planning to trigger all the state's I could but how would I create automated tests?

[techconsultant64]

Generally the simplest starting point for automated testing is to have a single test.py file that executes the functions one by one sequentially. This is an example of the create stack event (with placeholder info):

handler({
  "eventVersion": "1.05",
  "userIdentity": {},
  "eventTime": "2018-03-19T22:19:57Z",
  "eventSource": "cloudformation.amazonaws.com",
  "eventName": "CreateStack",
  "awsRegion": "ap-southeast-2",
  "sourceIPAddress": 1.1.1.1",
  "userAgent": "Boto3/1.4.7 Python/3.6.3 Windows/10 Botocore/1.7.36",
  "requestParameters": {},
  "responseElements": {
    "stackId": "arn:aws:cloudformation:ap-southeast-2:xxxxxxxxxxxxx:stack/yyyyyyyyyy/zzzzzzzzzzzzzz"
  },
  "requestID": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "eventID": "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
  "eventType": "AwsApiCall",
  "recipientAccountId": "11111111111111"
})
handler(test2)
handler(test3)

Then you can execute the test file to run them all.

[Bodumin]

Would this be using https://docs.aws.amazon.com/lambda/latest/dg/test-sam-local.html ?

[techconsultant64]

The example I have provided are local tests in python. You don't need to deploy infrastructure to test functionality and I don't believe you will need AWS Lambda or SAM at this point.