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What is Smoke Testing in Software Engineering?

One of our new interns asked us this question what is smoke testing in software engineering? This brought us to the decision of writing this blog post. Read till the end to learn about everything related to the basics of Smoke Testing and its implications.

What is Smoke Testing in Software Engineering?

Also called "build verification testing", smoke testing is a quick, low-cost test targeted at a small subset of the entire code base. It checks for functionality that may not be tested by any other types of testing or has not been covered in the previous manual or automated tests. Smoke tests are usually executed from inside your CI/CD pipeline (e.g., TravisCI). Each smoke test runs as quickly as possible and produces an output that can be compared against expected results to identify problems before they become larger issues later on down the road.

The reason why we testers use them so much is that they're fast and easy; you don't need too much hardware or space like traditional unit tests do. They also don't require any setup time like integration testing does (which goes into more detail about how this works). 

Smoke tests are not meant to find issues with the project's architecture or design. 

They are not tests that find bugs in code, and they do not replace functional or regression testing. Smoke tests only verify that your application works as expected (or at least as well as it can). That said, smoke tests often have a much lower scope than unit tests. Many applications don’t need any kind of automated testing at all unless you want to deploy your software on production servers—and even then it's usually just for security reasons or to make sure everything works when connected to external systems such as APIs.

Smoke tests do not replace functional or regression testing.

It's important to remember that smoke tests are not comprehensive, and they do not find every bug in your code. Smoke tests are quick and low-cost tests targeted at a small subset of the entire code base—for example, if you have 50 pages with 100 lines of HTML, then only 20% of those 50 pages need to be tested (20/100). Smoke testing helps you identify problems before they become production issues. It can also help prevent bugs from getting into production by identifying them early on in development so they can be fixed before they cause problems later on down the road. There are three types of smoke testing procedures:

  • Manual Testing: Tester writes, develops, modifies, and also updates the test cases for every product being developed. He also writes test scripts for every new and existing feature. 
  • Automated Testing:  As the name suggests, in this technique, a tool handles the process in an automation mode and produces results. It is normally used when the project deadlines are not generous.
  • Hybrid Testing: It is a hybrid way of doing these tests in which testers use both manual and automated methodology to implement the smoke testing. It is the most efficient way of doing it.

Speaking of automated testing, WeTest provides the industry’s leading Automation test services with experience working with leading names in the industry. Clients also get 1000 device support, Integration with the most frequently used CI and CD tools, processing of automated tests in parallel, and detailed test analysis on the client end.

Advantages of Smoke Tests:

When we discuss the topic “what is smoke testing in software engineering”, it’s hard to pass by its great advantages. Smoke testing is a very effective technique for catching bugs quickly, within the limited time frame that is allocated to development. It is also an effective way of ensuring that your code meets all quality standards and requirements. It’s worth noting that smoke tests should not be confused with unit tests or functional tests. Unit and functional tests are performed by developers themselves, while smoke testing involves using automated tools such as Selenium Web Driver (Selenium) to test different aspects of your application without having to write any code yourself.

Smoke testing is a great way to reduce the time it takes to find and fix bugs, as well as reduce the amount of code that needs to be written and tested before an application can be released. It also helps you catch bugs early so you can fix them quickly, which means less wasted time on fixing bugs that would have been found anyway.

Smoke tests are often much cheaper than full-stack unit tests because they do not require the use of a large number of mock objects or mocks configured to test different parts of an application. Additionally, developers don't have to write any boilerplate code for each test case and can focus on writing quality code instead. This saves time and money when it comes to maintaining your software applications over time as well as making sure that all parts work together smoothly during the development stage itself. Better Product Quality: Tests conducted using mock objects help ensure that all features in your application function correctly before releasing them into production environments where users will use them every day; this ensures there won't be any issues after release which could lead to trouble downstream.

Disadvantages of Smoke Tests:

So, you've got a few bugs in your code. You're ready to write some smoke tests. But wait...the smoke test is not a final, comprehensive test. It's just meant to show if the software can work in its intended use cases as expected and verify that it has no known bugs before integration or deployment.

The idea behind this approach is that you'll never find all possible errors in any piece of software—and even if you did, it would take too long and cost too much money for most companies to pay for this approach. So instead, we focus on finding the most important ones first by testing early enough so we can fix them before releasing our product into production…and then re-testing after those changes are made (this way we get better coverage).

Smoke testing isn't intended to catch all bugs. Instead, it's meant to show if the software can work in its intended use cases as expected. Smoke tests are not intended to catch subtle issues like race conditions and "gotchas." That's where unit tests come into play—they're designed specifically for catching these kinds of problems by exercising a small part of your code base at a time (like only one method or class).

Wrapping Up: 

Before we conclude our post on the topic “what is smoke testing in software engineering”, it can be stated that smoke testing is a widely used technique for ensuring that a software system can be used in an actual live environment. It is used to find bugs before they are released, or before they are fixed because it allows the developer to test their code without having access to the real data and users. Smoke tests also allow developers to see how their programs behave in certain situations that are not realistic but would be encountered during normal use of the program by real people (e.g., testing whether an application will crash when given invalid input). Smoke testing is a way to test the software. It's not a final, comprehensive test and it's not intended to catch all bugs, but it does let you know if your code is working as expected.

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