Ideal Scope of a Rainforest Test

Learn how to create an effective Rainforest regression test case.

Writing a good functional test case means ensuring the scope aligns with the feedback you care about. In other words, you should avoid cramming too much into a single test.

Ideally, a test case should represent a straightforward user activity. In the e-commerce world, you might leave a review for a past purchase or create a new account.

While testing both activities in a single test case might be tempting, each set of actions represents a different activity—and a separate test case.

Over time, creating tests that are broad in scope makes it difficult to measure results. Better to keep tests short, modular, and confined to a specific function or user flow.

Poor Example 1

Sign up as a new user using an invalid email address and confirm that the system raises an error. Then, sign up with a valid email address and password. Now, search for an Airbnb stay in Paris, France, and verify the results.

Lumping together unrelated user actions results in a test that is unfocused.

Poor Example 2

Click the sign-up button and confirm that a sign-up modal appears.

Here, the scope is too narrow; no useful activity can be completed.

Good Example

Log in to Airbnb using an email and an invalid password. Confirm that the system raises an error.

This is a suitable test case with a well-defined outcome.

To keep tests modular and simplify test suite maintenance, we recommend Embedded Tests. You can use these pre-written modules as building blocks when creating test cases.

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