Sanity Testing Vs Smoke testing

Automation TestingSoftware TestingTesting Tools

Introduction to Testing

Software testing is a process for detecting whether or not a software product meets the specified requirements and is defect-free. It is carried out in order to assess the software's quality. It comprises evaluating one or more properties of interest by executing software/system components using manual or automated approaches. The purpose of software testing, in contrast to actual requirements, is to detect errors, gaps, and missing requirements. The distinction between smoke and sanity testing is one of the most misunderstood aspects of software testing. There is a vast quantity of information available on the issue, but the most of it is confused. The following article attempts to clarify the situation. We'll learn what sanity testing and smoke testing are in software testing in this testing. With easy examples, we will also discover the key differences between Sanity and Smoke testing. Let us see each topic individually first: -

Sanity Testing

Sanity testing, sometimes known as a variation of regression testing, is typically performed on stable builds. When we received a software build (with minimal code modifications) from the development team, we did sanity testing. It's a checkpoint to see if the build's testing can continue or not. In other words, sanity testing ensures that all problems have been addressed and that no new issues have arisen as a result of the changes. Sanity testing also assures that any changes to the code or functions do not affect the modules that are linked to them. As a result, it can only be used on connected modules that can be affected.

Smoke Testing

When the development team sends you the build software, you'll need to do some smoke testing. Smoke testing is used to verify whether or not the build program is testable. It's done while you're "creating software." This is often referred to as "Day 0." It's a time-saving method. It cuts down on testing time because it's only done when the application's main functionalities aren't working or when important issues aren't fixed. The workflow of the application's main and primary functions is the focus of Smoke Testing.

Smoke testing is the process of testing a basic and crucial component of an application before doing one cycle of comprehensive, rigorous testing (before verifying all conceivable positive and negative results).We solely focus on the positive flow of the application during smoke testing and enter only genuine data, not invalid data. We validate whether each build is testable or not via smoke testing, which is also known as Build Verification Testing. When we execute smoke testing, we can find the blocker bug early on, allowing the test engineer to either continue testing the independent testable modules or go on to the next step.

The Main Differences Are −

  • The purpose of smoke testing is to ensure "stability," but the goal of sanity testing is to verify "rationality."

  • Developers and testers both perform smoke testing, however testers perform sanity testing.

  • Sanity Testing evaluates new functionality such as bug patches, while Smoke Testing verifies the system's critical functionalities.

  • Acceptance testing includes smoke testing, while regression testing includes sanity testing.

  • Sanity testing is not documented or scripted, unlike smoke testing.

  • Sanity testing verifies only a single component, whereas smoke testing verifies the entire system from start to finish.

Difference on the basis of both advantages

Advantages of sanity testing:

  • It aids in the detection of any deployment or compilation problems.

  • When compared to other methods of software testing, it is less expensive.

  • It aids in the rapid detection of faults in the core functionality.

  • Sanity testing does not require any documentation, so it may be completed in less time.

  • Because it only concentrated on one or a few functional areas, sanity testing will help us save time and effort during the testing process.

  • Sanity testing aids in the detection of missing dependencies.

Advantages of smoke testing −

  • It's a time-saving method.

  • We can find the bugs in the early stages.

  • It will aid in the restoration of system quality, lowering the risk.

  • It is simple to do testing because it saves us time and effort.

Difference on the basis of process

Sanity testing process −

The main goal of sanity testing is to look for inaccurate results or problems that aren't present in component methods. Also, make certain that the newly introduced features do not interfere with the functionality of existing ones.

As a result, we must gradually establish the sanity testing procedure by following the steps below −

  • Identification

  • Evaluation

  • Testing

The first step is to identify the problem − The initial phase in the sanity testing process is identification, in which we look for newly added components and functionalities, as well as any code changes made when addressing the fault.

Second step is to do the Assessment − Following the identification process, we will examine and adjust newly developed components and attributes to ensure that they are functioning as expected and in accordance with the specified requirements.

Testing is the third step − We will proceed to the following step, testing, once the identification and evaluation steps have been completed satisfactorily.

Smoke Testing Process

  • 1) Manually

Typically, Smoke Testing is performed manually to ensure that navigation is running smoothly and without any hiccups to funcrionality.

Smoke testing, on the other hand, varies from firm to company, depending on the requirements.When the software is finished, it is sent to QA, where essential functional test cases are run.If it fails, the program will be submitted to the development team, who will make the necessary changes to the software.

The program will be smoke tested again after the correction and compared to the previous build.

  • 2) Automated systems

Automation can be utilised to smoke test when time is limited and the new build is ready for deployment. The build can be tested with pre-recorded smoke test cases. If the test fails, the necessary corrections can be made and the software deployed in a short period of time.


Smoke TestingSanity Testing
Smoke Testing is used to ensure that the program's important functions are working properly.Sanity testing is carried out to ensure that new features and issues have been addressed.
The goal of this testing is to ensure the system's "stability" before moving on to more thorough testing.The goal of the testing is to ensure the system's "rationality" before moving on to more thorough testing.
The developers or testers are in charge of this testing.In software testing, testers typically perform sanity testing.
Typically, smoke testing is recorded or writtenSanity testing is frequently unplanned and undocumented.
Acceptance testing includes smoke testing as a subset.Regression testing is a subset of sanity testing.
Smoke testing puts the entire system through its paces.Only one component of the entire system is tested during sanity testing.
Smoke testing is similar to a routine physical examination.Sanity Testing is similar to a specialised health examination.

Points to Consider

  • Sanity and Smoke testing are two methods for avoiding wasting time and effort by identifying whether an application is too defective to be tested thoroughly.

  • A build verification test is smoke testing that is run on a specific build.

Updated on 13-Jul-2021 08:48:11