Work Product (Artifact): Testability Class

This artifact is a specialized class in the design model that represents test-specific behavior that the software will support.

Purpose

The purpose of the Testability Class is to capture the design for the test-specific functionality required to facilitate testing. This test-specific functionality should be incorporated in the software design model so that it can be factored into the complete software design. There are various types of test-specific behavior, two of which are:

"Stubs" for design classes that you need to simulate (typically because a complete version is not yet available).
Specialized interfaces or output, that provide the visibility or control necessary to conduct testing.

Relationships

Container Artifact	Design Model
Roles	Responsible: Capsule Designer Designer	Modified By: Designer
Input To	Mandatory: None	Optional: Design Testability Elements	External: None
Output From	Design Testability Elements

Properties

Optional
Planned

Illustrations

Reports	Class Report

Key Considerations

Testability Class artifacts are typically created and modified in parallel with creating and modifying the corresponding design classes.

Tailoring

Representation Options

UML Representation: Class, stereotyped as <<testability class>>

See Artifact: Design Class.

More Information

Guidelines	Design Class