Welcome!

SOA & WOA Authors: Bernard Golden, Elizabeth White, Carmen Gonzalez, Ivan Antsipau, Paul Speciale

Related Topics: Java, SOA & WOA, PowerBuilder, .NET, AJAX & REA, SDN Journal

Java: Article

Testers Are from Mars, Developers Are from Venus

Tips and tricks to improve your relationship with development

Developing with Performance Testing in Mind
A tester friend of mine recently came to me with a complaint that I think is fairly common in the testing community. He said, "Every time there is a new release of the software for us to test, we have to rework our testing scripts." I've heard this complaint throughout my career, not only in performance testing but in functional testing with automation tools as well.

This state of affairs arises from three fairly straightforward observations:

  1. Change is inevitable. Everything changes, and in no industry is this more apparent than software development. It makes no sense for testers to ask developers to stop changing the code, but it does make sense to encourage wise changes.
  2. Developers and testers don't always communicate well. The proverbial wall between developers and testers is still quite formidable. When developers throw a new version over the wall to be tested, too often they've given little thought to how it will be tested.
  3. All testing tools are not created equal. Some make it easier to identify and handle changes than others. If your testing tool is designed to handle change well, then your entire team is better positioned to embrace change rather than fear it.

Thinking Like a Tester
Most development organizations make a real effort to improve communication between developers and testers, but it's not always enough. Beyond encouraging developers to talk with testers, I ask them to take it a step further and think like testers.

I find that it's a good idea for developers to sit through some of the training that the test engineers complete. In my experience, the developers who do are more careful and avoid making arbitrary changes with little or no justification. They don't, for example, change the name of a field in a form simply because they don't agree with the name the initial developer gave it. When developers are aware of the kinds of changes that make a tester's job harder and what kinds of changes make it easier, then from an organizational standpoint the entire process is more productive.

An Analogy from the Early Days of Functional Testing
Some of the earliest automated functional testing tools for GUIs would simply record the location of the mouse pointer on the screen during tests, and then play back those mouse clicks to execute the test script. If a developer moved the location of a button on the screen, the script would break. Other tools would record the label on the button, so the button could be moved around the UI without breaking the script but changing the button text from "Submit" to "OK" would break the script. More advanced tools used the button's ID to identify it in the script so that the developer could change both the position and the label of the button without making the tester's job more difficult.

One key lesson here is that the choice of testing tool makes a big difference in the productivity of the testing team when the software under test changes, even in relatively trivial ways.

The other key lesson is that developer awareness of testing tools and procedures goes a long way in facilitating a smooth testing operation. I saw this firsthand during a training session I gave years back. While describing how button label changes affected testing, a developer who happened to be sitting in on the training sat upright when he finally understood why his colleagues in testing were so frustrated by many of his changes. He never knew why they objected so much to his changing a button label from "Clear" to "Reset". Going forward, that knowledge didn't stop the developer from making necessary changes. It did, however, make him pause when he made such changes to consider whether they were really necessary.

Performance Testing Tools That Make It Easy to Handle Change
In performance testing, we are not concerned with the location of buttons, but we're not immune to seemingly trivial changes.

For example, when a web form is submitted to the server, the form fields will be a series of name-value pairs. Changing the name of a form field, adding a field, or deleting a field can cause problems during performance testing. With a less capable testing tool, these problems can be hard to identify and diagnose, especially if there is poor communication between developers and testers.

File difference viewers (diff viewers) that enable the tester to compare multiple recordings against each other are particularly helpful in pinpointing the changed fields. When it's time to modify the script, an effective tool will enable you to add, delete, and update fields without programming. Just right-click and choose add, or simply drag-and-drop to update your load testing script.

Form fields are relatively easy to handle for load testers. Parameters that are session specific are more difficult. (These parameters change from session to session but stay the same for the duration of each user session). By default, the hard-coded session values are captured by a load testing tool in each script, and a test engineer needs to parameterize them to make the script usable for load testing. Double-clicking on a hard-coded value to make it a variable is easier than diving into the script code. Here again, tools that help automate the process can reduce test creation time from many hours to a few minutes.

When a new script is needed or maintenance is required on an existing script, tools that are easier to use can make the task orders of magnitude faster.

Overcoming the Fear of Change
I know of development teams that gradually became more and more afraid to change their software because of the difficulties that the changes introduced in testing and elsewhere in the process. Needless to say, this had a negative effect on their ability to deliver new features and fixes. A root of the problem, it turned out, was the testing tool that they were using, which made changes arduous and error-prone. Once they switched to a modern tool, the required script changes were easier to make. Performance testing times shrank from a week to less than a day and development was once again free to make long-needed changes. Agile development shops in particular depend on this ability to rapidly implement changes in testing scripts, and get the tests going in minutes or hours instead of days and weeks.

If your organization is starting to fear change, encourage your developers to think like testers and encourage your testers to use tools that make inevitable change easier to handle.

More Stories By Steve Weisfeldt

Steve Weisfeldt is a Senior Performance Engineer at Neotys, a provider of load testing software for Web applications. Previously, he has worked as the President of Engine 1 Consulting, a services firm specializing in all facets of test automation. Prior to his involvement at Engine 1 Consulting, he was a Senior Systems Engineer at Aternity. Prior to that, Steve spent seven years at automated testing vendor Segue Software (acquired by Borland). While spending most of his time at Segue delivering professional services and training, he was also involved in pre-sales and product marketing efforts.

Being in the load and performance testing space since 1999, Steve has been involved in load and performance testing projects of all sizes, in industries that span the retail, financial services, insurance and manufacturing sectors. His expertise lies in enabling organizations to optimize their ability to develop, test and launch high-quality applications efficiently, on-time and on-budget. Steve graduated from the University of Massachusetts-Lowell with a BS in Electrical Engineering and an MS in Computer Engineering.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@ThingsExpo Stories
The Internet of Things will greatly expand the opportunities for data collection and new business models driven off of that data. In her session at Internet of @ThingsExpo, Esmeralda Swartz, CMO of MetraTech, will discuss how for this to be effective you not only need to have infrastructure and operational models capable of utilizing this new phenomenon, but increasingly service providers will need to convince a skeptical public to participate. Get ready to show them the money! Speaker Bio: Esmeralda Swartz, CMO of MetraTech, has spent 16 years as a marketing, product management, and busin...
Samsung VP Jacopo Lenzi, who headed the company's recent SmartThings acquisition under the auspices of Samsung's Open Innovaction Center (OIC), answered a few questions we had about the deal. This interview was in conjunction with our interview with SmartThings CEO Alex Hawkinson. IoT Journal: SmartThings was developed in an open, standards-agnostic platform, and will now be part of Samsung's Open Innovation Center. Can you elaborate on your commitment to keep the platform open? Jacopo Lenzi: Samsung recognizes that true, accelerated innovation cannot be driven from one source, but requires a...
SYS-CON Events announced today that Red Hat, the world's leading provider of open source solutions, will exhibit at Internet of @ThingsExpo, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Red Hat is the world's leading provider of open source software solutions, using a community-powered approach to reliable and high-performing cloud, Linux, middleware, storage and virtualization technologies. Red Hat also offers award-winning support, training, and consulting services. As the connective hub in a global network of enterprises, partners, a...
P2P RTC will impact the landscape of communications, shifting from traditional telephony style communications models to OTT (Over-The-Top) cloud assisted & PaaS (Platform as a Service) communication services. The P2P shift will impact many areas of our lives, from mobile communication, human interactive web services, RTC and telephony infrastructure, user federation, security and privacy implications, business costs, and scalability. In his session at Internet of @ThingsExpo, Robin Raymond, Chief Architect at Hookflash Inc., will walk through the shifting landscape of traditional telephone a...
SYS-CON Events announced today that Matrix.org has been named “Silver Sponsor” of Internet of @ThingsExpo, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Matrix is an ambitious new open standard for open, distributed, real-time communication over IP. It defines a new approach for interoperable Instant Messaging and VoIP based on pragmatic HTTP APIs and WebRTC, and provides open source reference implementations to showcase and bootstrap the new standard. Our focus is on simplicity, security, and supporting the fullest feature set.
BSQUARE is a global leader of embedded software solutions. We enable smart connected systems at the device level and beyond that millions use every day and provide actionable data solutions for the growing Internet of Things (IoT) market. We empower our world-class customers with our products, services and solutions to achieve innovation and success. For more information, visit www.bsquare.com.
How do APIs and IoT relate? The answer is not as simple as merely adding an API on top of a dumb device, but rather about understanding the architectural patterns for implementing an IoT fabric. There are typically two or three trends: Exposing the device to a management framework Exposing that management framework to a business centric logic • Exposing that business layer and data to end users. This last trend is the IoT stack, which involves a new shift in the separation of what stuff happens, where data lives and where the interface lies. For instance, it’s a mix of architectural style...
SYS-CON Events announced today that SOA Software, an API management leader, will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. SOA Software is a leading provider of API Management and SOA Governance products that equip business to deliver APIs and SOA together to drive their company to meet its business strategy quickly and effectively. SOA Software’s technology helps businesses to accelerate their digital channels with APIs, drive partner adoption, monetize their assets, and achieve a...
From a software development perspective IoT is about programming "things," about connecting them with each other or integrating them with existing applications. In his session at @ThingsExpo, Yakov Fain, co-founder of Farata Systems and SuranceBay, will show you how small IoT-enabled devices from multiple manufacturers can be integrated into the workflow of an enterprise application. This is a practical demo of building a framework and components in HTML/Java/Mobile technologies to serve as a platform that can integrate new devices as they become available on the market.
SYS-CON Events announced today that Utimaco will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Utimaco is a leading manufacturer of hardware based security solutions that provide the root of trust to keep cryptographic keys safe, secure critical digital infrastructures and protect high value data assets. Only Utimaco delivers a general-purpose hardware security module (HSM) as a customizable platform to easily integrate into existing software solutions, embed business logic and build s...
Connected devices are changing the way we go about our everyday life, from wearables to driverless cars, to smart grids and entire industries revolutionizing business opportunities through smart objects, capable of two-way communication. But what happens when objects are given an IP-address, and we rely on that connection, sometimes with our lives? How do we secure those vast data infrastructures and safe-keep the privacy of sensitive information? This session will outline how each and every connected device can uphold a core root of trust via a unique cryptographic signature – a “bir...
Internet of @ThingsExpo Silicon Valley announced on Thursday its first 12 all-star speakers and sessions for its upcoming event, which will take place November 4-6, 2014, at the Santa Clara Convention Center in California. @ThingsExpo, the first and largest IoT event in the world, debuted at the Javits Center in New York City in June 10-12, 2014 with over 6,000 delegates attending the conference. Among the first 12 announced world class speakers, IBM will present two highly popular IoT sessions, which will take place November 4-6, 2014 at the Santa Clara Convention Center in Santa Clara, Calif...
Almost everyone sees the potential of Internet of Things but how can businesses truly unlock that potential. The key will be in the ability to discover business insight in the midst of an ocean of Big Data generated from billions of embedded devices via Systems of Discover. Businesses will also need to ensure that they can sustain that insight by leveraging the cloud for global reach, scale and elasticity.
WebRTC defines no default signaling protocol, causing fragmentation between WebRTC silos. SIP and XMPP provide possibilities, but come with considerable complexity and are not designed for use in a web environment. In his session at Internet of @ThingsExpo, Matthew Hodgson, technical co-founder of the Matrix.org, will discuss how Matrix is a new non-profit Open Source Project that defines both a new HTTP-based standard for VoIP & IM signaling and provides reference implementations.

SUNNYVALE, Calif., Oct. 20, 2014 /PRNewswire/ -- Spansion Inc. (NYSE: CODE), a global leader in embedded systems, today added 96 new products to the Spansion® FM4 Family of flexible microcontrollers (MCUs). Based on the ARM® Cortex®-M4F core, the new MCUs boast a 200 MHz operating frequency and support a diverse set of on-chip peripherals for enhanced human machine interfaces (HMIs) and machine-to-machine (M2M) communications. The rich set of periphera...

SYS-CON Events announced today that Aria Systems, the recurring revenue expert, has been named "Bronze Sponsor" of SYS-CON's 15th International Cloud Expo®, which will take place on November 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Aria Systems helps leading businesses connect their customers with the products and services they love. Industry leaders like Pitney Bowes, Experian, AAA NCNU, VMware, HootSuite and many others choose Aria to power their recurring revenue business and deliver exceptional experiences to their customers.
The Internet of Things (IoT) is going to require a new way of thinking and of developing software for speed, security and innovation. This requires IT leaders to balance business as usual while anticipating for the next market and technology trends. Cloud provides the right IT asset portfolio to help today’s IT leaders manage the old and prepare for the new. Today the cloud conversation is evolving from private and public to hybrid. This session will provide use cases and insights to reinforce the value of the network in helping organizations to maximize their company’s cloud experience.
The Internet of Things (IoT) is making everything it touches smarter – smart devices, smart cars and smart cities. And lucky us, we’re just beginning to reap the benefits as we work toward a networked society. However, this technology-driven innovation is impacting more than just individuals. The IoT has an environmental impact as well, which brings us to the theme of this month’s #IoTuesday Twitter chat. The ability to remove inefficiencies through connected objects is driving change throughout every sector, including waste management. BigBelly Solar, located just outside of Boston, is trans...
SYS-CON Events announced today that Matrix.org has been named “Silver Sponsor” of Internet of @ThingsExpo, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Matrix is an ambitious new open standard for open, distributed, real-time communication over IP. It defines a new approach for interoperable Instant Messaging and VoIP based on pragmatic HTTP APIs and WebRTC, and provides open source reference implementations to showcase and bootstrap the new standard. Our focus is on simplicity, security, and supporting the fullest feature set.
Predicted by Gartner to add $1.9 trillion to the global economy by 2020, the Internet of Everything (IoE) is based on the idea that devices, systems and services will connect in simple, transparent ways, enabling seamless interactions among devices across brands and sectors. As this vision unfolds, it is clear that no single company can accomplish the level of interoperability required to support the horizontal aspects of the IoE. The AllSeen Alliance, announced in December 2013, was formed with the goal to advance IoE adoption and innovation in the connected home, healthcare, education, aut...