Welcome!

Microsoft Cloud Authors: Pat Romanski, Lori MacVittie, Andreas Grabner, Jim Kaskade, John Basso

Related Topics: Java IoT, Microservices Expo, PowerBuilder, Microsoft Cloud, IoT User Interface, SDN Journal

Java IoT: 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
Whether your IoT service is connecting cars, homes, appliances, wearable, cameras or other devices, one question hangs in the balance – how do you actually make money from this service? The ability to turn your IoT service into profit requires the ability to create a monetization strategy that is flexible, scalable and working for you in real-time. It must be a transparent, smoothly implemented strategy that all stakeholders – from customers to the board – will be able to understand and comprehe...
What happens when the different parts of a vehicle become smarter than the vehicle itself? As we move toward the era of smart everything, hundreds of entities in a vehicle that communicate with each other, the vehicle and external systems create a need for identity orchestration so that all entities work as a conglomerate. Much like an orchestra without a conductor, without the ability to secure, control, and connect the link between a vehicle’s head unit, devices, and systems and to manage the ...
SYS-CON Events has announced today that Roger Strukhoff has been named conference chair of Cloud Expo and @ThingsExpo 2017 New York. The 20th Cloud Expo and 7th @ThingsExpo will take place on June 6-8, 2017, at the Javits Center in New York City, NY. "The Internet of Things brings trillions of dollars of opportunity to developers and enterprise IT, no matter how you measure it," stated Roger Strukhoff. "More importantly, it leverages the power of devices and the Internet to enable us all to im...
The Internet of Things (IoT) promises to simplify and streamline our lives by automating routine tasks that distract us from our goals. This promise is based on the ubiquitous deployment of smart, connected devices that link everything from industrial control systems to automobiles to refrigerators. Unfortunately, comparatively few of the devices currently deployed have been developed with an eye toward security, and as the DDoS attacks of late October 2016 have demonstrated, this oversight can ...
You have great SaaS business app ideas. You want to turn your idea quickly into a functional and engaging proof of concept. You need to be able to modify it to meet customers' needs, and you need to deliver a complete and secure SaaS application. How could you achieve all the above and yet avoid unforeseen IT requirements that add unnecessary cost and complexity? You also want your app to be responsive in any device at any time. In his session at 19th Cloud Expo, Mark Allen, General Manager of...
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smar...
"ReadyTalk is an audio and web video conferencing provider. We've really come to embrace WebRTC as the platform for our future of technology," explained Dan Cunningham, CTO of ReadyTalk, in this SYS-CON.tv interview at WebRTC Summit at 19th Cloud Expo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
Financial Technology has become a topic of intense interest throughout the cloud developer and enterprise IT communities. Accordingly, attendees at the upcoming 20th Cloud Expo at the Javits Center in New York, June 6-8, 2017, will find fresh new content in a new track called FinTech.
Bert Loomis was a visionary. This general session will highlight how Bert Loomis and people like him inspire us to build great things with small inventions. In their general session at 19th Cloud Expo, Harold Hannon, Architect at IBM Bluemix, and Michael O'Neill, Strategic Business Development at Nvidia, discussed the accelerating pace of AI development and how IBM Cloud and NVIDIA are partnering to bring AI capabilities to "every day," on-demand. They also reviewed two "free infrastructure" pr...
WebRTC is the future of browser-to-browser communications, and continues to make inroads into the traditional, difficult, plug-in web communications world. The 6th WebRTC Summit continues our tradition of delivering the latest and greatest presentations within the world of WebRTC. Topics include voice calling, video chat, P2P file sharing, and use cases that have already leveraged the power and convenience of WebRTC.
As data explodes in quantity, importance and from new sources, the need for managing and protecting data residing across physical, virtual, and cloud environments grow with it. Managing data includes protecting it, indexing and classifying it for true, long-term management, compliance and E-Discovery. Commvault can ensure this with a single pane of glass solution – whether in a private cloud, a Service Provider delivered public cloud or a hybrid cloud environment – across the heterogeneous enter...
"At ROHA we develop an app called Catcha. It was developed after we spent a year meeting with, talking to, interacting with senior citizens watching them use their smartphones and talking to them about how they use their smartphones so we could get to know their smartphone behavior," explained Dave Woods, Chief Innovation Officer at ROHA, in this SYS-CON.tv interview at 19th Cloud Expo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Fusion, a leading provider of cloud services, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Fusion, a leading provider of integrated cloud solutions to small, medium and large businesses, is the industry’s single source for the cloud. Fusion’s advanced, proprietary cloud service platform enables the integration of leading edge solutions in the cloud, including cloud...
Video experiences should be unique and exciting! But that doesn’t mean you need to patch all the pieces yourself. Users demand rich and engaging experiences and new ways to connect with you. But creating robust video applications at scale can be complicated, time-consuming and expensive. In his session at @ThingsExpo, Zohar Babin, Vice President of Platform, Ecosystem and Community at Kaltura, discussed how VPaaS enables you to move fast, creating scalable video experiences that reach your aud...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place June 6-8, 2017, at the Javits Center in New York City, New York, is co-located with 20th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry p...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life sett...
DevOps is being widely accepted (if not fully adopted) as essential in enterprise IT. But as Enterprise DevOps gains maturity, expands scope, and increases velocity, the need for data-driven decisions across teams becomes more acute. DevOps teams in any modern business must wrangle the ‘digital exhaust’ from the delivery toolchain, "pervasive" and "cognitive" computing, APIs and services, mobile devices and applications, the Internet of Things, and now even blockchain. In this power panel at @...
The 20th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held June 6-8, 2017, at the Javits Center in New York City, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Containers, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal ...
20th Cloud Expo, taking place June 6-8, 2017, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy.
20th Cloud Expo, taking place June 6-8, 2017, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy.