What About the V-Model?

The V-Model for Software Development specifies 4 kinds of testing:

  • Unit Testing
  • Integration Testing
  • System Testing
  • Acceptance Testing

You can find more information here (Wikipedia):

http://en.wikipedia.org/wiki/V-Model_%28software_development%29#Validation_Phases

What I’m finding is that of those only the Unit Testing is clear to me. The other kinds maybe good phases in a project, but for test design it doesn’t help much. It is hard to say which tests should go in a system test, an integration test or an acceptance test.

In Action Based Testing(tm) (ABT) we have a concept called “test modules”, that I feel can work much better. A test module is a collection of tests with similar scope, designed to be executed together. In practice the test module is a sheet like document with “actions”: lines specific test actions (and checks), each starting with an “action keyword” (or “action word”), followed by arguments.

In ABT we focus strongly on what we call the high level test design, in which we identify the test modules and groups of test modules. I have written about this in my articles on test design. This process is dependent on the context of the project and the system under test, and can therefore lead to different results in different circumstances. What it typically never leads to is “integration testing”, “system testing” or “acceptance testing”. It will rather be a mix of modules like “user interface tests”, “financial transactions”, “database integrity”, “security”, etc.

Once a list is established, the next step is make a schedule, with for each test module: (1) when to develop the module, and (2) when to execute it. The development scheduling typically depends on availability of specifications. for a mortgage calculation test module this will be early in a project, when the business rules are expect to be available, while for a UI test of a dialog one has to wait until the dialog has been specified in detail. For the execution scheduling generally the order reverses: tests that verify details of the user interaction need to pass before it makes sense to run tests that enter and verify financial transactions.

The result is that the V Model is still visible as a pattern in the sense that tests developed earlier are commonly executed later. However, the traditional interpretation of “integration testing”, “system testing” and “acceptance testing” is not commonly seen, and in particular does not appear to be a good starting point for the test development planning.

LogiGear Corporation
LogiGear Corporation provides global solutions for software testing, and offers public and corporate software testing training programs worldwide through LogiGear University. LogiGear is a leader in the integration of test automation, offshore resources and US project management for fast, cost-effective results. Since 1994, LogiGear has worked with Fortune 500 companies to early-stage start-ups in, creating unique solutions to meet their clients’ needs. With facilities in the US and Viet Nam, LogiGear helps companies double their test coverage and improve software quality while reducing testing time and cutting costs.

The Related Post

This article was developed from concepts in the book Global Software Test Automation: Discussion of Software Testing for Executives. Introduction When thinking of the types of Software Testing, many mistakenly equate the mechanism by which the testing is performed with types of Software Testing. The mechanism simply refers to whether you are using Manual or ...
Companies generally consider the software they own, whether it is created in-house or acquired, as an asset (something that could appear on the balance sheet). The production of software impacts the profit and loss accounts for the year it is produced: The resources used to produce the software result in costs, and methods, tools, or ...
LogiGear Magazine March Issue 2021: Metrics & Measurements: LogiGear’s Guide to QA Reporting and ROI
March Issue 2019: Leading the Charge with Better Test Methods
One of the most dreaded kinds of bugs are the ones caused by fixes of other bugs or by code changes due to feature requests. I like to call these the ‘bonus bugs,’ since they come on top on the bug load you already have to deal with. Bonus bugs are the major rationale for ...
One of the most common challenges faced by business leaders is the lack of visibility into QA activities. QA leaders have a tough time communicating the impact, value, and ROI of testing to the executives in a way that they can understand. Traditional reporting practices often fail to paint the full picture and do not ...
Introduction All too often, senior management judges Software Testing success through the lens of potential cost savings. Test Automation and outsourcing are looked at as simple methods to reduce the costs of Software Testing; but, the sad truth is that simply automating or offshoring for the sake of automating or offshoring will only yield poor ...
Karen N. Johnson began as a technical writer in 1985 and later switched to software testing in 1992. She maintains a blog at TestingReflections, a collaborative site where she is featured as a main contributor. In her latest entry, she discusses search testing with different languages. Here is an excerpt from her blog: “I started ...
Introduction Keyword-driven methodologies like Action Based Testing (ABT) are usually considered to be an Automation technique. They are commonly positioned as an advanced and practical alternative to other techniques like to “record & playback” or “scripting”.
Test plans have a bad reputation, and perhaps, they deserve it! There’s no beating around the bush. But times have changed. Systems are no longer “black boxes” where QA Teams are separated from design, input, and architecture. Test teams are much more technically savvy and knowledgeable about their systems, beyond domain knowledge. This was an old ...
Alexa Voice Service (AVS): Amazon’s service offering for a voice-controlled AI assistant. Offered in different products. Source: https://whatis.techtarget.com/definition/Alexa-Voice-Services-AVS Autopilot Short for “automatic pilot,” a device for keeping an aircraft on a set course without the intervention of the pilot. Source: https://en.oxforddictionaries.com/definition/us/automatic_pilot Blockchain Infrastructure: A complex, decentralized architecture that orchestrates many systems running asynchronously over the ...
I’ve been reviewing a lot of test plans recently. As I review them, I’ve compiled this list of things I look for in a well written test plan document. Here’s a brain dump of things I check for, in no particular order, of course, and it is by no means a complete list. That said, if you ...

Leave a Reply

Your email address will not be published.

Stay in the loop with the lastest
software testing news

Subscribe