Best Practices For Visual Regression Testing On Cloud

19 August 2023

Visual regression testing is the software testing process that is used to test your software application by visually finding any error or malfunctioning in the user experience. Visual regression testing ensures that an application or website maintains its intended look and behavior. It confirms the absence of any unplanned alterations to its visual design or functionality.

This procedure entails comparing a reference version of the application or website and its current version, aiming to identify any visual disparities.

Visual regression testing in a Cloud-based platform is the latest trend in the field of software testing and automation testing. It has various advantages, such as it increases the testing scope, costs less, and it increases testing flexibility.

In this article, you will see the concepts of visual regression testing on the cloud, best practices for it, and many such things.

What is Visual Regression Testing

Visual regression testing evaluates the impact of code changes on the user experience by comparing screenshots before and after execution. It’s also recognized as visual snapshot tests or visual testing, and its primary objective is to uphold visual consistency following updates.

The Function Of The Visual Regression Testing

Visual testing validates the suitability of an application’s user interface in terms of its visual attributes. This quality assurance process aims to confirm the accurate display of content and data on the application’s front end.

In case you’re not acquainted with the concept of Regression testing, its purpose is to ensure that any modifications made to the software do not disrupt any previously functioning elements. In the context of visuals, this testing guarantees that alterations to the software do not lead to style-related problems.

The true capability of visual regression testing can be leveraged with Cloud-based AI-powered test orchestration and execution platforms like LambdaTest. It allows the running of visual testing across a large farm of 3000+ real device and OS combinations. This helps to ensure cross platforms compatibility on the visual appearance and interface of the software applications.

Features Offered By The Cloud-Based Ai-Powered Test Orchestration And Execution Platform – Lambdatest For Robust Visual Regression Testing Are As Follows:

This section discusses the features which are offered by the test orchestration and the execution platform.

Execute Selenium and Cypress tests across a range of programming languages, such as Java, NodeJS, C#, Python, and StoryBook. This empowers the delivery of flawlessly designed applications across almost any browser or device.
Employ Mis-match Ignore feature of SmartUI’s Status Bar so that you can tackle the complexities of visual differentiations. This capability allows testers to crop the status bar out from the screenshots. Leveraging the high-end technique of image processing, it accurately detects and eliminates the status bar. This facilitates the analysis of essential UI components with due focus.
Effortlessly install, set up, and execute the LambdaTest NPM package. This enables the direct implementation of the JS scriptsStorybook via our NPM CLI.
Conduct regression testing, the visual ones for your mobile apps on genuine devices. Assure visual uniformity with precise pixel-to-pixel comparisons against your reference point, encompassing various screen sizes, resolutions, and layouts.

Best Practices for Visual Regression Testing on Cloud

Let us see the practices a tester must follow while performing visual regression testing on a cloud-based platform like LambdaTest.

Following these practices during the test automation will make your software application visually more powerful and efficient.

1. Tool Selection:

Choosing the appropriate tool to perform visual regression testing on the LambdaTest is one of the most important and essential steps in moving ahead of the testing process. Various parameters should be kept in mind during the tool selection for testing automation, such as the software type, compatibility aspects, resolution, etc. LambdaTest integrates with various tools like Selenium, Cypress, Playwright, and others, using which you can perform visual regression testing.

2. Consistent Environment:

Never forget to create a conducive setup that will facilitate cloud-based visual regression testing. The interface provided by using these environments allows you to examine the visual outcomes and input received during the testing process. The testing team has the ability to pause the visual regression testing procedure and make the necessary corrections.

The team conducting the testing should also maintain resource isolation for the environment. It aids in preventing any type of intervention during automation testing, which increases the effectiveness and productivity of cloud-based visual regression testing.

3. Isolation And External Factors:

Remember that the isolated environment should not be affected by any external factors. They include network latency or fluctuations, system updates, or background processes running on the testing machine. These factors may lead to visual error and malfunctioning of the software application. External influences can potentially introduce visual errors and cause malfunctions in the software application.

Ensuring a controlled environment by addressing the factors safeguards the accuracy of the testing results. All the screenshots and visual reports of the testing process will be saved in that specific folder. This will help to perform visual comparisons effectively.

4. Scriptless Test Cases

Visual regression testing on the cloud platform using scriptless test cases is the best approach. Since numerous cloud-based AI tools are available, test automation can be utilized to develop test cases simultaneously. It is because the testing scope of a programmed test case is limited.

But using AI technologies offered by LambdaTest for test case design opens up possibilities for the testing team to consistently cover the testing scope. It will perform visual testing against some test cases, and again, it will recreate the test cases according to the previous result and analysis. This practice will bring the best visual result for your software application.

5. Documentation Of Visual Test Cases

Documentation is a very effective and important practice in any software testing process. In visual regression testing, you need to test and verify the components visually, and here it is important to mark down your observations, bugs, and analysis and work on them accordingly.

For your visual regression tests performed in LambdaTest, you should create clear and succinct test cases and descriptions. You should also include comments or annotations to describe the aim and scope of your baselines and screenshots.

Additionally, you should preserve and maintain your screenshots and baselines using a version control system or a cloud-based service. Sharing and communicating with the client will help you understand their demand and make the best possible result.

6. Updating The Baseline

Updating the baseline is a very crucial step in the visual regression testing process when performed in LambdaTest. It consists of the practice of taking the feedback result and analyzing them. If the result is considerable, you can approve this update in the baseline. And if you think that it is not worth consideration, you can simply reject them. But you need to mention all these in the baseline. It is because this will help you in the future because you can see all your testing logs in the baseline.

Mention the changes that were done intentionally, their reasons, and such things. It will also help all the team members have an overview of the changes that are going on in the software testing process.

6. Optimize Testing Coverage And Scope

Always remember to prioritize the testing scope for each component, specifically when executing visual regression testing in cloud platforms like LambdaTest. The high-priority components must be paid more attention, and they should be executed with high precision.

Use the concept of full-page and component-based screenshots to compare the changes visually by the testing team. Using this practice in visual regression testing will help achieve a better UI experience and enhance the testing results. You can use some advanced features like custom attributes.

These attributes help find the elements separately during visual regression testing. Also, you can use the trigger events and DOM concept. These will help to perform the screenshot comparison effectively.

7. Performing Parallel Testing

Apart from this, you can leverage parallel test execution in performing visual regression testing in LambdaTest. Executing parallel testing is what makes visual regression testing productive and effective, though, along with those other factors.

8. Learn From Failure

It is the final practice that all testers must follow to perform visual regression testing on the cloud and during test automation. Learn from your previous failure. Document the mistakes that you have made previously. Write down the tool feedback and in which specific tool you got some issues performing the testing process. And learn from these highlights.

Make your testing goal and work on your failures. This will bring the best result for your software application. Also, it will help in the overall development of the organization as well as the individual tester. You should follow These best practices while performing visual regression testing on the cloud.

Conclusion

Visual regression testing is mainly used to find any kind of visual malfunctioning and errors in the software. Visual inconsistency is one of the major reasons that lead to decreased number of users of a product.

Some of the best practices that every testing team should follow to perform visual regression testing using the cloud are the selection of appropriate tools, using documentation, using AI-based test cases, etc. Various tools can be used to automate testing and perform visual regression testing on the cloud, such as LambdaTest.

Hope you get an understanding of the best practices for visual regression testing using the cloud and their various aspects after reading this article.

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Arnab

Arnab is a professional blogger, having an enormous interest in writing blogs and other jones of calligraphies. In terms of his professional commitments, He carries out sharing sentient blogs.

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Additives for Plastic: business and technical factors

What are additives for plastic? Plastics additive essentially defines the actual plastic material (final product). Polymers are the base materials, but additives really determine all the design and manufacturing factors of end products. They also determine how a product will be used (strength, weight, color, safety, price, and design). This makes the application knowledge of additive the real engineering design determining factor. The additive sales engineering consultant is a useful resource to give clients information on their products and their use: Material formulation Industry-specific regulations (i.e. electrical, industrial, home, children use) Manufacturing techniques Business-related information: cost, delivery, Additive plastics regulations: Regulations on plastics additive cover both manufacturing and end product. Most regulations are available as original written text, but knowing how to understand and apply them is key to design and manufacturing. Here each manufacturer will be able to apply their knowledge to your design. Manufacturers with a long history and many designs will also be able to help in your final testing and regulation qualification process. The bigger the supplier and more qualification test it has gone through, the easier the process will be. Regulations are usually tested and qualified in the application sector. Electrical, home, office fire-related testing, and qualification may be different in a country than building and construction regulations. This we see in companies specializing in each sub-sector. Cost-effective additive use: Additives are a standard method to control cost in plastics manufacturing. By providing design and manufacturing flexibility and known material qualities. Partnering with a supplier which specializes in the sector you manufacture will also move your work faster and smoother, this speed and ease of work will save you a great deal of money. Examples of additives types: One way to understand the additive products is with the application of each product attribute. Here are some of the tops types: Anti-static: products in a static producing environment that are handled often can benefit from anti-static qualities. Electrical products susceptible to static discharge damage need this additive. Flame retardant: reduces or eliminates the spread of flames, heat, or sparks. All indoor and electrical products need to comply with flame retardant regulations. Color masterbatch: the color additive is a big class by itself. Colors give life to a product and are the biggest market differentiator. Many consumer products use color design in each seasonal manufacturing design. Anti-fog barrier: In packaging and agriculture, anti-fog barriers give the product this specific quality. The additive gives surface tension quality which eliminates the forming of water drops. UV light stabilizer: In all sunlight exposed products: agriculture, home, sport, leisure, packaging, textile-fibers, and automotive plastics UV light causes color and texture damage. UV light stabilizer is used in these products. This makes a plastics additive supplier a critical factor in your design (engineering), manufacturing (cost), and even the business (management, operation) side of your company. We know how useful a business partner can be. Yet we need both the hard business-related factors and the soft ones. The hard factors are related to the product itself, costs, manufacturing, design, regulation coverage, and material specification. The soft factors are related to how crews work together, financial arrangements (i.e. credit, payment terms, reimbursements, competitive costs), and eventually management’s ability to work productively with everyone from design to manufacturing. Read Also: Why Gift Your Customers Plastic Business Cards? 10 Most Amazing Chemicals to Prevent Rust in Steel

High Resolution Imaging — What Is It And How Does It Work?

In an age dominated by visual content, the significance of high-resolution imaging cannot be overstated. From stunning landscape photographs that take your breath away to intricate medical scans that save lives, HR imaging is the bedrock of modern visual technology. Its benefits span across various industries and applications reshaping how we tend to perceive, analyze, and understand the world around us. Where is High Resolution Imaging Used? High imaging resolution, especially when done through Materials analysis, is currently being used in more than one business segment. Hence, in order to help you understand, we have explained five of them here. Let’s learn more about them together. 1: Device for Component Failure Analysis Advanced imaging is important for examining component failures, whether in electronics or industrial machinery. This technology offers a crude, microscopic view, revealing tiny flaws or irregularities that are otherwise unseen. Exploring the smallest details of structural issues or material problems helps identify the main reasons for failures, making it easier to take accurate corrective measures. 2: Characterization of Minerals and Ores High-resolution imaging greatly assists in the analysis and extraction of minerals and ores. Detailed imaging of geological samples allows scientists and geologists to identify their composition, structure, and internal characteristics. This knowledge usually helps in pinpointing valuable mineral deposits, comprehending their geological origins, and improving extraction methods. Additionally, this technology significantly contributes to the mining sector by providing more precise evaluations of resource reserves. 3: Particle Identification and Characterization Advanced technology is adept at recognizing and describing particles, revealing details about their form, dimensions, and structure. Whether in pharmaceuticals, environmental research, or material science, analyzing particles helps comprehend how they behave, what they do, and their potential effects. It can also ensure the effectiveness of medicines or investigate pollutants efficiently. It makes it easier for the researchers to examine the issues with them and rectify them. 4: Elemental Mapping and Analysis High-resolution imaging boasts a crucial skill: the capacity to analyze and chart the elemental makeup of a sample. Methods such as energy-dispersive X-ray spectroscopy (EDS) enable the identification and mapping of elements present. This capability tends to hold immense importance across various fields like material science, geology, and environmental studies. Also, pinpointing the distribution of elements precisely provides researchers with valuable insights into — Material characteristics, Environmental pollutants, and Essential compositional differences 5: Dimensional Analysis Precision in dimensional analysis finds its ultimate ally in high-resolution imaging. From measuring the tiniest components in nanotechnology to assessing macroscopic structures, this technology facilitates accurate dimensional analysis. It enables engineers and researchers to scrutinize the minutest details, ensuring adherence to specifications and standards in manufacturing and construction. 6: Process Characterization High-resolution imaging serves as a guide in process characterization across industries. By visualizing processes at a microscopic level, it enables a comprehensive understanding of material interactions, phase changes, and structural transformations. These insights are invaluable in refining manufacturing procedures, optimizing efficiency, and ensuring product quality. 7: Reverse Engineering The realm of reverse engineering benefits immensely from high-resolution imaging. By capturing intricate details of existing products or components, this technology facilitates the recreation or improvement of designs and functionalities. It enables engineers to analyze and understand complex structures, aiding in the re-creation or enhancement of products without relying on original blueprints or designs. 8: Forensic Analysis In forensic science, high-resolution imaging stands as a cornerstone in investigations. It delves into minute details of evidence, aiding forensic experts in analyzing crime scenes, examining trace evidence, and elucidating intricate patterns or marks. Technology tends to play a pivotal role in criminal investigations by providing vital visual evidence and supporting detailed analyses crucial in courtroom proceedings. High Resolution Imaging — The Benefits In this section, we will tell you about the benefits of high resolution imaging. So, without any further ado, let’s get started. 1: Offers more Clarity and Detail At its essence, high-resolution imaging's key lies in its capacity to capture fine details with remarkable clarity. Whether it's a simple photo, a medical scan, or satellite imagery, increased resolution means more pixels, enabling the preservation of finer intricacies. Envision a picture where each blade of grass or speck of stardust is vividly portrayed—this level of precision is achievable through high-resolution imaging. 2: Enhanced Visual Experience High-quality imaging greatly enhances our visual encounters in various fields. For instance, in cinematography, movies filmed in ultra-high definition offer an immersive viewing experience, rendering each frame vivid and engaging. Likewise, video games profit from high-resolution graphics, crafting visually impressive and lifelike settings that immerse players in vibrant and realistic virtual worlds. 3: Scientific Advancements In domains like astronomy, microscopy, and medical imaging, the significance of high-quality imaging cannot be overstated. Cutting-edge telescopes capture incredibly detailed images of celestial objects, unveiling the secrets of the cosmos. Advanced microscopes allow scientists to explore the tiny realm of cells and organisms with unparalleled precision. Within medicine, techniques like MRI and CT scans, known for their high-resolution capabilities, play a crucial role in precise diagnoses and treatment strategies by providing clear visualizations of internal structures. 4: Geospatial Understanding Satellite images and GIS depend significantly on detailed imaging, offering vital information for urban planning, disaster response, environmental surveillance, and farming. These technologies play a significant role in the aspect of tracking landscape alterations, overseeing deforestation, supporting urban growth, and predicting natural calamities. They empower decision-making and efficient resource control by providing high-resolution satellite imagery that monitors changes and aids in disaster prediction. 5: Artificial Intelligence and Machine Learning The combination of high-quality imaging and artificial intelligence (AI) introduces exciting new possibilities. AI algorithms, when trained using detailed images, demonstrate exceptional abilities in identifying objects, segmenting images, and detecting patterns. These advancements have wide-ranging uses in autonomous vehicles, facial recognition technology, medical image interpretation, and other fields. The fusion of high-resolution imaging and AI sets the stage for groundbreaking innovations that reshape multiple industries. 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Get The Best Assistive Technology: A Telecare Equipment

The telecare equipment is used to minimize the risk for any situation which may occur at home when you or your elderly needs medical help when no one is there. The panic buttons are proven to be one of the best telecare equipment in today’ time as they help to keep your loved ones safe when no one is there at their house. Such personal alert equipment is used by the abundance of people across UK and USA. As such devices are very easy to understand and simple to use and are increasingly affordable for everyone which is a plus point. This telecare equipment has real-time monitoring sensory technology inbuilt in it which detects the records and emergencies so that an appropriate action could be taken when a medical emergency gets arrived. The panic button is one such equipment which is delicately saving more than 40,00 lives per year, it is a manually active personal alert device which provides medical support to its users in just a press of a button. Know the types of telecare equipments! If you are thinking to buy such personal telecare equipment for yourself, you will come across the two most common type of personal alert equipment, which can be worn as wristband or pendant. In some cases, it can also be worn as a clip to the clothing. However, different kind of telecare provider offers different kinds of designs and options for such alarm buttons. Some devices are interchangeable and some can be worn in different ways in respect to giving the best comfortable option to the user. The technology behind the telehealth and telecare equipments! There are abundance number of telecare alarms and senores which have many different functions attached to it as they all work together to provide protection and support to its users. The starting aim of such equipments is that they beat the expectation of its user by delivering genuine protection and security so that one can live in their house freely. Most of the telecare elderly equipments serve its user by giving features: Taking pendant alarm: Let you listen and talk to your dear ones when you need a help. Fall detection sensor equipments: The telecare equipments helps by detecting the falls and in just a second. Further, to help you they call for help by sending signals. Contacts loved ones in an emergency: The most benefited feature of such telehealth equipments is that they connect the nearby medical centers, family, friends, and neighbors whenever you are in need. Get anywhere alarmed: You can get a personal alert for yourself, by using it in your home in out or about. Connects to a 2-way speech unit: The telecare equipments like panic buttons can be located in the areas of bedroom and halls as it will send signals to the emergency numbers. Lastly, most types of telecare equipment like panic buttons have a range of between 160-300 meters, which help to send signals over far distances. Before you install one such personal alert button, you must ask your telecare installer to test it from different areas in your home around your garden and house. The telecare equipment can add great value to save one’s life, get one today! Read Also: Information Technology And Business Success: The Things That Connect Them Ten Ways Technology Is Impacting Modern Education

Best Practices For Visual Regression Testing On Cloud

What is Visual Regression Testing

The Function Of The Visual Regression Testing

Features Offered By The Cloud-Based Ai-Powered Test Orchestration And Execution Platform – Lambdatest For Robust Visual Regression Testing Are As Follows: