Question

A developer is testing a `serialize(order)` / `deserialize(bytes)` pair for an order object. Example-based unit tests keep passing, but production occasionally corrupts orders with unusual field combinations the developer never thought to write cases for. They want Copilot to help generate tests that catch these unforeseen combinations without hand-authoring each input. Which prompt approach best leverages Copilot for this need?

Accepted Answer

Ask Copilot to generate a property-based test asserting the round-trip invariant that `deserialize(serialize(order))` equals the original order for randomly generated order inputs.

Answer

Ask Copilot to duplicate the existing example tests and change the literal field values slightly in each copy.

Answer

Ask Copilot to add more assertions to a single test using the same hardcoded order object already in the suite.

Answer

Ask Copilot to generate a load test that serializes the same order object thousands of times to measure throughput.