When it comes to software development, there are a few things that can’t be compromised under any circumstances. Testing is one of them. Unfortunately, it can be overlooked due to the tight budget or time limits which will result in profit losses or even a complete market rejection. Customers usually don’t care how vendors test their software products. However, they do care about the outcome – they expect to receive a high-quality product that meets their requirements. Basic software testing services are usually included in the whole project delivery package. Still, sometimes standard testing isn’t enough to ensure all-embracing quality assurance of a particular product. In this case, it’s reasonable to apply advanced testing techniques. Let’s explore these techniques.


There are a few types of checks that are indispensable to prevent blockers, as well as critical and major bugs of software. A standard testing procedure normally looks like this: if a bug is detected during any kind of testing, QA engineers make a bug report. After a bug is fixed, that piece of software has to be retested. It’s that simple.

The primary action QA engineers perform when they are assigned a project is called a requirement analysis. It is performed before development and is aimed at drawing the project manager’s attention to controversial issues in order to prevent some obvious bugs. In addition, this approach lets you reduce the project estimate.

When following Agile methodology, after each sprint (a software development iteration), the requirements are checked again. At this point of development, they are called User Stories. This kind of check is known as Acceptance Testing and is performed after each sprint.

The most frequent type of testing executed during the development is Smoke Testing, which checks if the product starts and all its major features work properly. It is performed after each build which is an executable software that can be used and tested.

Regression and Sanity Testings, which are performed regularly after each source code change. No matter how significant the change is whether it is adding features, fixing bugs, or migration to another OS), it shouldn’t affect the existing functionality. The main difference between Regression Testing and Sanity Testing is that the latter is a surface-level testing type and doesn’t require much time for performing.

The Visual Side of the Business

All the aforementioned are the testing types that are responsible for the functional side of a product. What about the visual one? GUI Testing is necessary to make sure that the screens of a product correspond to the approved mockups and wireframes. However, this might not provide a complete simulation because different browsers and operating systems may display the design differently.

Usability Testing is aimed at testing the product’s UX and making suggestions on the improvement of users’ interaction with the system. To make things work correctly, you can distinguish certain groups of users and perform Permission Testing. This helps ensure that the user experience of regular users differs from the administrator’s.

A basic testing package is normally enough to deliver a product that, firstly, meets the customers’ requirements and, secondly, satisfies users with the quality and performance of the product. But, what if your customers expect more?

Why basic testing may not be enough to get a top-quality product

Here are a few signs that a product has to be tested much deeper.

  • Unusual functionality. Sometimes developers come up with requirements for software that go far beyond conventional functionality. So they have to apply unconventional ways of testing. It makes sense, doesn’t it?
  • Increased safety requirements. Software solutions that deal with financial operations, for example, should be tested much more thoroughly.
  • Scalability requirements. In case product owners wish their product to grow fast, they should make sure the system will handle the load.
  • Budget issues. If product owners want to reduce expenses for frequent product updates because of bug fixing, they can take care of additional levels of testing in advance. Then, they will be able to make updates only in case they introduce new features.

Advanced testing: Additional Steps that Ensure the Highest Quality

All the requirements that are mentioned above for software quality are achieved with the following advanced services. Quality Assurance activity starts at Sprint 0. QA engineers receive access to the specification documents and wireframes, which allows them to complement the requirements and prevent some bugs before coding.

Before each of the following Sprints, a Requirements Analysis has to be performed to look precisely at each task to be completed during the Sprint and detect possible bugs in advance.

Advanced GUI testing is necessary to verify styles and overlaid stencils on the increased number of testing devices and platforms.

Test Automation: Functional and Regression Testing. An automated approach is able to test the product faster and perform tests with changeable parameters: a few versions of the input and expected data in one test.

Automated testing for REST API. It’s very important to receive quick and precise results on the server’s behavior and the state of the product’s business logic.

Compatibility Testing is performed to make sure that the product won’t negatively affect other apps and system components.

Interrupt testing. Despite this kind of testing is included in a basic package as well, there are lots of additional cases that may cause interruption of the program.

You should also include Load testing and Stress testing to eliminate the chance of the product’s failure under stressful conditions, as well as ensure the restoration of normal operations in case of a failure.

Security testing, which is aimed at providing protection against various attacks: SQL Injection, XSS vulnerability.

And finally, it’s a good idea to add the test content into the project and databases to let customers present an MVP to the investors or potential users, make a promo video or launch an advertisement.


As you see, there are many ways to cover as many testing issues as possible to deliver software products of the quality level our customers require.