What is a smoke test in QA

Smoke testing is a method of determining the stability of a software build. It is utilized to decide if a new build is prepared for the next testing phase or if it requires to be stabilized first. In this article, we will discuss what is a smoke test in QA, and why it is important.



Smoke tests are critical tests that must be performed on every new build. This will help software developers to evaluate if their new features are functioning as they are. If their new features are functioning as meant or if they must be fixed before running subsequent tests.

Unlike your traditional regression testing, smoke testing is also a manual process, and it involves unique skills. Great software development teams combine their abilities to make this process efficient, and that helps them save a lot of time and energy.

In other words, smoke testing lets software developers verify the validity of the builds they create, by implementing testing earlier on when they can conserve both time and budget.

Why is smoke testing in QA important?

Without smoke tests, your build won’t be in tip-top shape to start the more detail-oriented tests that require your attention. Plus, the sooner you catch issues, the easier they are to fix. What’s even better is that smoke testing is a good indicator of a build’s functionality and is a good precursor to more formal tests.

Apart from bugs, smoke testing is essential because it lays the groundwork for other types of testing. Running more tests on builds boosts the overall quality of those builds. You can’t move on to functional testing without first performing smoke testing, which implies the build can’t advance.

It’s also worth considering that smoke testing is integral to multiple other stages of the software testing process. Smoke testing is used during system testing and makes it possible to validate builds faster and with fewer mistakes.

What is the significance of the term “smoke testing”?

“Smoke testing” is a term borrowed from the construction industry, specifically the method by which construction workers test pipes. It’s the practice of testing software components to ensure that they function as intended before they are integrated.

What is smoke testing in QA for?

Smoke testing is used to determine the stability of a build as well as whether the build is ready for additional stages of testing.

Its purpose looks a lot like it sounds: it’s meant to eliminate bugs in your software. The need for code that has no errors is essential. Especially in the enormous codebases that form the bones of today’s most successful apps.

A smoke test checks if the critical functionalities of a piece of software are running properly. In other words, it ensures that all the functions of the program are stable.

When to use smoke testing in QA?

Smoke testing is a type of build verification testing, meaning it’s generally done at the beginning of a test cycle. They are also used in any integration work, such as when a new build is being integrated into an existing software package. It examines the most basic aspects of a piece of software and checks for critical errors in functionality.

In simple terms, smoke testing is a method that developers use to check if their software is working as expected.

Types of smoke testing in QA

It’s important to understand that different types of smoke testing each check for different things.

Hybrid testing, manual testing, and automated testing are all common types of software testing, each with its distinct advantages and disadvantages.

Manual Testing

Choosing the manual method entails hiring human testers to perform your smoke tests.

For example, if you’re developing a brand-new app that needs to be tested, you could put your manual testers through their paces on a range of different devices.

Even though manual testing is more time-intensive and takes a little longer to complete, it grants flexibility by providing you with an opportunity to see how real-world users interact with your app. As such, your test cases will be more indicative of the practical functionality of your product.

Automated testing

Instead of relying on manual testers to run your smoke tests, you can use automation tools to speed up the process, reduce cost, and eliminate the resource drain.

The automated testing procedure is also faster (and simpler!) than any other method. This is because automation tools can conduct their assigned tasks very effectively and much quicker than humans!

Hybrid testing

The hybrid testing method combines the best of both manual/automatic testing. It largely consists of some automation in the smoke testing process but also includes manual human labor to ensure the software is thoroughly tested and is free from any bugs.

Sanity testing vs. smoke testing

Sanity testing is a type of software testing that is performed by the person designing the system.

Small code edits and improvements are verified by a sanity test to make sure bugs were removed without introducing new ones, as well as retain functionality.

Sanity testing is similar to unit testing in that it is conducted on a smaller part of the whole. However, while unit testing is more or less focused on just one thing, sanity testing is more of an overall evaluation of whatever fixes a development team makes.

The benefits of smoke testing in QA

So far, we’ve seen that smoke testing is necessary to hook developers into the process without being intrusive. It might help to think of your software build as something of a bookshelf. It may look good and work solidly, but if you start adding piles of things to all of the shelves on it, they’re more likely to crash. Smoke tests are the shelf-steadying weights you’re going to use before you load up the one-time-use decorations.

The following are the most significant benefits of conducting smoke tests:

System stability

Early-stage testing is important to verify that your builds are stable. This makes your builds more readable to ops and test engineers later. This reduces the amount of manual effort required to ensure that critical infrastructure is functioning properly.

Assurance that things will continue to function properly provides some peace of mind. Everybody implicated in the later phases of the testing procedure will indeed be able to operate without fear of massive bugs inside the code going to cause countless imperfections.

Your company makes it significantly easier to add more revenue and improve performance across the board when you have a comprehensive set of stable software builds. We’re not only seeing that trend right now among companies we expect to grow their revenue over the next couple of years, but also those that we expect to be financially healthy in the next five years.

Simple process

One of the most significant advantages of Smoke Tests is their simplicity to conduct.

You can use these simulations to run quick experiments that don’t require any resources to power, which can save you both money and time in the long run. Because of the simplicity of the smoke test, it can be easily inserted before you perform other kinds of tests.

Bugs can be detected easily

It’s important to detect bugs as early as possible. This gives developers more time to fix the issues and reduce the chances of users encountering them in the first place.

By performing frequent smoke tests, you can guarantee that your software is fairly bug-free when it is released. At the very least, you can assure your users that any potentially dangerous bugs have already been identified and fixed.

Enhances end-product quality

Smoke testing will often have better results for your product with fewer bugs as a result.

Offering high-quality products is rewarded by really impressed customers. This not only gives a good reputation for your company but also encourages other buyers to buy from your organization rather than a competitor.

The importance of quality assurance and its role in customer satisfaction cannot be overstated. Customers will have a richer experience with your software if it runs smoothly with no bugs interfering with their experiences.

Makes the work of QA teams simpler

Your QA teams have a lot of important tasks they need to accomplish, and can’t afford to spend hours running large test suites to track down newly introduced bugs.

If you want to maximize the efficiency of your quality assurance (QA) testing of an app, you should run more smoke tests, and with greater frequency. The reason is that smoke tests catch crashes and other critical issues before your QA team even starts running the full test suite.

Since it’s both simple and cost-efficient, smoke testing can increase the knowledge of your QA team about bugs in software. That way they can prevent releasing any broken software. And they can still have an ample amount of time to focus fully on the quality of the code.

Increasing the efficiency

You can also run smoke tests to check for bad dependencies during new feature development. Sometimes, these dependencies cause rendering issues and can easily slip past the QA department and cause unforeseen issues for the end user.

Furthermore, smoke testing increases the effectiveness of your automated testing, as the other stages won’t be affected by problems the smoke tests can catch.

Reduces the risks of integration

Smoke testing can assist with integrations that require getting an established piece of software and introducing additional functionalities to it.

These features are introduced through new builds, each of which must be tested first.

When that testing involves smoke testing, you can be confident that every element of the resulting integrated software has already been affirmed. Ultimately, this results in a more secure integration.

Saves money and time

Because smoke testing can efficiently and quickly identify the sources of problems, your teams will spend fewer hours sorting the code for possible perpetrators.

This saves money and time particularly if your team does not employ a lot of automation.

Highly adaptable

As beneficial as automation can be, it is not suitable for everyone. Even if you don’t want to use automation for whatever reason, you can still smoke test manually. This method comes with its advantages.

The versatility of smoke testing extends beyond automated and manual testing. Smoke testing works on all types of builds with only minor changes to the procedure on its own.

Provides feedback fast

Getting feedback regularly is critical in all aspects of the business.

Of course, software developers must ensure the quality of their work before releasing it to customers to test. That implies they can’t count on customer feedback to motivate them to keep getting better.

With smoke tests, your developers can receive feedback fast and regularly. In other sayings, they’ll continuously be able to see what they did well enough and where they can keep improving.


Smoke testing, in particular, is a useful way to ensure that your main aspects function properly.

This can only improve the appearance of your software builds to their users. It assists your software in meeting your customers’ anticipations for the level of quality they consider to see, resulting in a more positive impression of your product.


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