Writing maintainable tests for web user interfaces is critical for ensuring the reliability and stability of applications. As the software evolves and changes, it's vital to have tests that can be easily maintained and updated to reflect the latest changes in the code.
As part of UI testing, it is necessary to focus on the application's behavior rather than its implementation details. This is because implementation details can undergo frequent changes, and testing them can result in fragile tests that easily break when the implementation is modified.