Img_001_large
Img_001_large

Architecting Continuously Testable Systems

Testability Quality Factor for Continuous Delivery in Digital Systems

Ken McCormack

Software Developer | Application Architect | Audio Engineer

April 06, 2015

TL;DR; When we architect systems using automated testing and test-first approaches, we quickly see testability constraints move to our system boundary. Low testability quality factor in external services is a key constraint on our ability to continuously prove our system is in a state of production readiness. We require external systems to . . .

Read More

Legacy Architecture and Testability

Manual Test Teams and Testability Architectural Debt

Ken McCormack

Software Developer | Application Architect | Audio Engineer

April 05, 2015

The architecture of specification subsystems has always been critical to quality factors like cycle time -

Industry estimates indicate that between 30 and 50 percent (or in some cases, even more) of the cost of developing well-engineered systems is taken up by testing. If the software architect can reduce this cost, the payoff is large. . . .

Read More

Quality Factors for SOA

Service-Oriented Architecture and Architectural Quality Factors

Ken McCormack

Software Developer | Application Architect | Audio Engineer

April 04, 2015

In the context of Service-Oriented Architecture, early work from [O'Brien et al, 2005] discusses the importance of quality attributes -

Software architecture is the bridge between mission/business goals and a software-intensive system. Quality attribute requirements drive software architecture design. Choosing and designing an . . .

Read More

Architectural Quality Factors

Software Architecture in Practice

Ken McCormack

Software Developer | Application Architect | Audio Engineer

April 04, 2015

Recap on extrinsic quality factors

Extrinsic quality factors are key concepts for business and architecture stakeholders. [Bass et al, 2013] use quality factors to describe the architectural characteristics of a system -

availability, modifiability, performance, security, testability, and usability

as well as...

qualities, such as . . .

Read More

Heuristics for testability

Some tips from Eberhardt Rechtin

Ken McCormack

Software Developer | Application Architect | Audio Engineer

April 03, 2015

On the design of testable systems, Rechtin provides us with several heuristics [Rechtin, 1991] -

To be tested, a system must be designed to be tested

This sounds self-evident, yet, within many architecture silos, a view persists that testability is the concern of development and testing teams. Are they missing something?

The test setup for . . .

Read More

Archive
  Subscribe by Email and Never Miss a Post