The most common three are hybrid testing, manual testing, and automated testing. We’re going to take a look at what sets these three apart from one another, as well as what makes them uniquely useful. This is because they let software developers determine whether the features they’ve included in the new builds are working, or whether they need to fix them before conducting further testing.

Can be run by developers as well as part of the quality assurance process. Could you please explain Exploitative testing with proper explanation. If this function is working correctly, then tester will pass it in testing and test the next function of the same application. Suppose, we are using an eCommerce site, and the core working of this site should be login, specific search, add an item into the cart, add an item into the favorite, payment options, etc. After testing, the tester has to be sure and confident about the functioning of the function of the application.

definition of smoke test

This collection of tests may vary in number, depending on the item being tested, but the goal remains the same – to find basic defects early before other work occurs on the item. Smoke Testing is a simple test conducted to ensure that the software is working properly at a gross level so that further testing can be done. If the smoke test itself fails then no further testing can be done. It is also called Build Verification Testing and is done for software build. After a software build is verified in a smoke test, it is ready for further formal testing.

Types of smoke testing

In smoke testing, the test cases usually cover the most important functionalities of the system. The basic objective of this method of testing is not to perform exhaustive testing, but to verify that the critical functionalities of the system are working fine. Smoke testing has got its name from hardware repair systems wherein a smoke test is performed on pipelines to know whether they are working or not. Similarly, this smoke test is a quick test performed as a part of the software testing, to see if the application “catches on fire” when a new build is deployed and tested for the first time. Today, the concept of smoke testing is widely used in the software development process. Well, you might not actually find any smoke in real, but the same principles are applied in smoke testing software.

definition of smoke test

A developer can perform smoke testing before releasing a build iteration to test. By testing the most critical functions before releasing the code to testing team, you can catch the most definition of smoke test annoying but easy to fix bugs. This helps testers channel their skills into catching the more complex ones. Hopefully, by now, you have the basic knowledge of what smoke testing is.


You want a smoke suite to be an easily manageable number of tests that can be executed quickly, regardless of whether the smoke suite has been automated. The recommended number of test cases is generally 20 on the low end to around 50 on the high end. Any less than this and you’re probably not getting enough relevant coverage, and any more than this and you’re probably trying to cover too much ground at this stage. QA teams will be more productive and have higher job satisfaction when they can have more confidence about higher-viability builds that successfully pass through the smoke test suite.

The test leads do not specify to do smoke testing, but still, the testing team starts testing the application by doing smoke testing. Suppose we assume that four days we are given to the functional testing. On the first day, we check one module, and on the second day, we will go for another module. And on the fourth day, we find a critical bug when it is given it to the developer; he/she says it will take another two days to fix it.

  • Also, you get to lower the chances of your original build rejecting the new content when you’ve got proof that the new content is stable and free of software-breaking bugs.
  • In the production server, smoke testing can be done by the Business analyst , Development team manager, testing team manager, build team, and the customer.
  • It is interesting to note that defects and failures in physical structures often occur where components fit together, or fail to fit properly.
  • Smoke tests disqualify bad builds at a low cost, making it easier to cope with frequent (e.g. daily) builds.
  • A software build is a process by which source code is converted to a stand-alone form that can be run on any system.

Sanity testing of the software is to ensure whether the requirements are met or not. The Smoke testing is typically executed by testers after every build is received for checking the build is in testable condition. This type of testing is applicable in the Integration Testing, System Testing and Acceptance Testing levels. In this, the development team sends the application to the Test Lead. Then the test lead will instruct the testing team to do smoke testing and send the reports after performing the smoke testing.

Performance Testing Using JMeter

It essentially involves employing some automation in the smoke testing process, while also relying on a degree of manual human labor to test the software. In other words, smoke tests let software developers verify the validity of the builds they’ve created. By implementing a smoke testing stage before other formal tests are done, they can ensure that no time or resources are wasted during the later testing stages. There are other certainly other ways to perform smoke tests and other contexts in which smoke testing may be applicable. For example, in a classic or hybrid waterfall lifecycle, smoke tests might be performed as part of integration or system testing. However, smoke tests can be performed in many contexts, including traditional waterfall life cycles.

definition of smoke test

In cases where the build is rejected, the tester should provide feedback to the development team and process the information efficiently. Smoke testing is essentially a subset of all defined and planned test cases that cover the main functionality of a component or system. The testing ascertains if the most crucial functions of a program work, but the testing does not bother with the finer details.

DevOps Consulting

Functional tests exercise the complete program with various inputs. Unit tests exercise individual functions, subroutines, or object methods. Functional tests may comprise a scripted series of program inputs, possibly even with an automated mechanism for controlling mouse movements. Unit tests can be implemented either as separate functions within the code itself, or else as a driver layer that links to the code without altering the code being tested.

Once the testing team is done with smoke testing, they will send the smoke testing report to the test lead. In the smoke testing, we only focus on the positive flow of the application and enter only valid data, not the invalid data. In smoke testing, we verify every build is testable or not; hence it is also known as Build Verification Testing. In the case of manual smoke testing, it takes a lot of time to execute the testing process for larger projects. That saves money and time, mainly if a team doesn’t utilize automation much. To elaborate on the previous point on automation, one can completely automate the smoke testing procedure.

Smoke testing cycle

To help our readers, we have created the Ultimate Guide to Smoke Testing, where you’ll find out everything you need to learn about smoke testing. Performance Tests means the tests to be conducted on the equipment at site for checking the performance parameters of the equipment as defined in Technical Specification. Genetic test means an analysis of human DNA, RNA, chromosomes, proteins, or metabolites, that detect genotypes, mutations, or chromosomal changes. Smoke testing is just one example of how testing is woven through all of 3Pillar Global’s product development processes. Uncovers functional errors as well as architectural and component-level design defects.

Can be automated

This is due to the high coverage, shallow depth nature of smoke testing suites. Think of this test suite as a sketch-mapping of the quality of the application. If the build is somewhat viable, then more efficiency can be gained if QA continues with regression testing on that build while developers fix any smoke-test bugs. After fixing those bugs, the developers can then turn to fix any bugs that QA has found in the regression testing.

It comprises a minimal collection of tests executed on every build to verify the software’s operation. The goal is to determine that the proposed functionality works roughly as expected. If sanity test fails, the build is rejected to save the time and costs involved in a more rigorous testing.

It is a process which verifies that the application under development meets its basic functional requirements. If we don’t perform smoke testing in early stages, defects may be encountered in later stages where it can be costly. And the Defect found in later stages can be show stoppers where it may affect the release of deliverables. Regression tests target specific operations of software and can take a few hours to complete. For example, regression testing explicitly checks each link on an updated webpage to verify that each link still works as intended. Some use cases in regression testing can be automated, such as verifying that adding an item to a cart works or that users can still navigate to their cart and pay.

Smoke tests are very useful when you either don’t have time or don’t know where to start and need a quick test to show you the level of your product. Most of the time Sanity testing is not at all scripted, which may be a problem for some testers. It saves lots of time and effort because it is focused on one or few areas of functionality. This type of test is more suitable if you can automate; otherwise, a lot of time is spent manually executing the test cases. While no particular lifecycle is required for smoke tests, perhaps the most common context today is a CI/CD pipeline, such as seen in DevOps or agile.

This testing should take place at the beginning of the software testing life cycle. Smoke testing quickly verifies the quality of the build and evaluates the basic tasks whether they can be executed or not. This method of testing should be adopted when there is a change in the build or whenever a new build is deployed. It also doesn’t hurt that smoke testing often is a sure way to speed up your release cycle, since it ensures that your builds work properly, early on in the development cycle.

Once completed, the software build is sent to the QA team who will perform tests on its critical functions. If the tests fail, it will be sent back to the development team for fixing. In automated smoke testing, pre-recorded tests run on the build and record whether the functions work or not. Whenever there is a new build, QA team determines the major functionality in the application to perform smoke testing.

Smoke testing is done for the software in order to verify that the software is stable enough for further testing. It has a collection of written tests that are performed on the software prior to being accepted for further testing. Smoke testing “touches” all areas of the application without getting too deep.

The same idea of validating the functionality of builds is why smoke testing in software development carries that name. You can’t run a network of water pipes if even one join of one pipe leaks; in the same way, you can only use software builds when all of their components work as intended. Aside from bugs, smoke testing is important because it paves the way for other types of testing, and performing more tests on builds improves the overall quality of those builds. Without smoke testing first, you can’t move on to functional testing, which means the build can’t progress.

A build includes all data files, libraries, reusable modules, engineered components that are required to implement one or more product functions. By nature, smoke tests help you nab the easy to find but critical bugs that block your team’s progress. And such issues usually occur during the first few Sprints of a project, or when you’re in the initial phases of building a new product. There are many benefits with smoke testing at an early stage of the product development. Hence, this testing process should be adopted as it quickly evaluates the basic functionalities of a new build and ensures whether the build is suitable to be moved for further testing process.

Smoke testing can be done either manually or by automation depending on the client and the organization. Identifying the business critical functionalities that a product must satisfy. If you’re looking to make a system almost completely bug-free, then smoke tests aren’t the only course of action. And it all depends on how much ‘new’ stuff you’re putting into your product, and at what rate. In Extreme Agile environments, and if you have Continuous Integration and DevOps, well, go for as many smoke tests as you like or need. Can be the tester, the BA, the Project Manager, and most importantly, can be the developer.