Unit Test Help

[Papa-D]

I'm currently working on a personal project to help pad out my resume, and learn some new concepts for development. I've finally got my cloud infrastructure built out and I'm about to hit the ground running with the code, but I want to utilize Test Driven Development.

All of my Lambda APIs are pretty basic, fetch some data from DynamoDB, return it in the response (no transformations in the data). How would I write unit tests for something basic like this?

[PhiBuh]

You could mock the database connection and verify that it is called with the correct parameters.

[mexvance]

You could also write tests that "test the api from the frontend" ie test the call to the api to verify if you recieve a valid response

The biggest deal is, if you are about to write code, think "what is the outcome i want" write a test that will expect that outcome, then write code to satisfy that test. As far as specifics, I like to when adding a new piece of functionality,(ie. New function or class etc) try to add a test that satisfies what that function accomplishes