How do I write test cases for my AWS Python-based lambda project?

Question

I have implemented a lambda project which has 4 modules/project inside it. Each module/project has python(s) files which implement module functionality.

I have to write the test cases for each module so that it goes through CircleCI and execute on themselves:

That the module is starting and stopping a stepfunction.
module is calling Rest service.
It is writing/reading files from S3 Bucket.

Everywhere, it is like a test driven development to write unit test, but now I have completed project implementation, how do I write automated test cases for my module ?

Noel Llevares · Accepted Answer · 2017-12-11 23:18:48Z

1

When it comes to unit testing, there's nothing special you have to do about AWS Lambda projects.

You Lambda handler is a Python function. Therefore, you can import it on your tests, call it with some input, and assert the output. Just like a normal Python function.

answered Dec 11, 2017 at 23:18

Noel Llevares

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2 Comments

Anurag Gupta Over a year ago

i was referring to ppl using aws resource mock

Noel Llevares Over a year ago

Then, state that in your question.

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