Teresa Tian (Group 23 Partner: Daniel Luo)
Even though the "message" feature is critical in a messaging application, its dependence on multiple interacting components like UI, network, and database make it not ideal for unit testing. Instead, the integration or end-to-end tests are more suitable to ensure the entire messaging process functions smoothly as intended.
Unit testing is ideal for the "max message length" feature, which restricts user input to no more than 80 characters, operates with a clear, isolated logic that can be tested independently. A unit test can simulate inputs to the system and check whether the length constraint is enforced accurately, providing a straightforward verification of this specific functionality.