Final answer:
Testers with full access to a web application's documentation and code are likely to perform white-box testing, focusing on mechanical and physical testing procedures that match the web applications context and ensuring precise and accurate documentation.
Step-by-step explanation:
The type of test that testers are most likely to perform on a web application when they have full access to product documentation, including the code and data structures, is a form of white-box testing. White-box testing is characterized by the tester's knowledge of the internal workings of the application, allowing them to evaluate how the application operates and to check the functionality directly against the code.
Testers will test and evaluate the application to ensure it meets all constraints and performs acceptably relative to the criteria. They will employ mechanical and physical testing procedures as relevant to a web application, ensure their work and documentation are clean, accurate, precise, and utilize their attention to detail and strong organization skills to adhere to timelines and be deadline driven.