There is a critical need for approaches to support software testing. Our research exploits the information described at Architectural Patterns to drive the definition of tests. As a result, we intend to assist developers in finding relatively shorter and cheaper paths to high dependable software. Categories and Subject Descriptors D.2.5 [Software Engineering]: Software Testing and Debugging; D.2.11 [Software Engineering]: Software Architecture; D.2.13 [Software Engineering]: Reusable Software: Reusable models. General Terms Reliability Keywords Architectural Patterns, Test Patterns, Testability.