What is the focus of test case development?

The focus of test case development is primarily on designing test sequences. This process involves defining a series of actions or conditions to evaluate how the software behaves in response to specific inputs or scenarios. The goal is to ensure that the software meets the defined requirements and functions as expected under various conditions.

In test case development, sequences of tests are created to ensure comprehensive coverage of the system's functionalities. Each test sequence is designed based on requirements and potential use cases, allowing for the identification of defects or issues in the software before it is deployed. This approach is crucial in agile environments, where testing is integrated into the development cycle, promoting continuous feedback and improvement.

Creating test documentation, formulating requirements, and developing new software features, while related to the overall testing process, do not capture the specific essence of what test case development entails. Test documentation is typically a byproduct of the test design process, while formulating requirements involves gathering and specifying what the software needs to do, and developing new software features is part of the development process rather than the testing process itself.