What is the purpose of the test values section in an aggregate?

The purpose of the test values section in an aggregate is to define values that allow for the visualization of the aggregate output. This feature enables developers to simulate how the aggregate will behave with specific data inputs, facilitating the validation of the output generated by the aggregate query. By providing test values, the developer can analyze how the aggregate retrieves and displays data, ensuring the correct functionality before the application is deployed or tested in a production environment.

In the context of other options, defining conditions for obtaining specific records focuses more on filtering data based on criteria rather than testing outputs. Similarly, defining the order of checkouts relates to specifying the sequence of operations, which is not the central goal of the test values section. Defining the entities from which to obtain records pertains to setting up the source of data but does not involve the visualization aspect that test values emphasize. Thus, the primary purpose of the test values section is to aid in visualizing and validating the output of the aggregate.