Refactoring Tests to Be Self-updating

Learn how to write self-updating tests for a basic schema.

Now that we have guaranteed our test’s accuracy in the previous lesson let’s refactor our test to be self-updating.

Creating a self-updating test

Before we write our first test, we’ll write a helper function at the bottom of our test file after all the describe blocks.

Helper function

The new function will be called valid_params/1:

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