Smoke Testing vs Sanity Testing – What’s the Difference

In the world of software development, there are many different types of testing methods that are used to ensure the quality and functionality of a product.

Two of the most important and commonly used methods are smoke testing and sanity testing.

In this article, we will take a closer look at what these two testing methods are, their importance in software development, and how they can be used to improve the overall quality of your product.


Smoke Testing

Smoke testing, also known as “build verification testing” or “confidence testing,” is a type of testing that is used to quickly identify any major issues or defects in a product.

The goal of smoke testing is to ensure that the most basic and critical functions of a product are working correctly before more extensive testing is performed.

Smoke testing is typically performed by running a set of automated tests that cover the most important and critical features of a product.

These tests are designed to quickly identify any major issues or defects that would prevent the product from being used or that would cause significant problems for the end user.

The benefits of smoke testing are many. It is a quick and efficient way to identify major issues early on in the development process, which can save a lot of time and resources in the long run.

Smoke testing also helps to ensure that the most critical functions of a product are working correctly, which can improve the overall quality of the product and increase customer satisfaction.

When to use smoke testing?

Smoke testing is typically performed early on in the development process, before more extensive testing is performed.

This allows developers to quickly identify any major issues or defects and make necessary adjustments before the product is released to the public.

Examples of smoke testing in software development include testing the login functionality of a website, testing the basic functionality of an app, or testing the ability to send and receive emails in an email client.

Sanity Testing

Sanity testing, also known as “subset testing” or “regulation testing,” is a type of testing that is used to quickly validate that a product is functioning correctly after a small change or modification has been made.

The goal of sanity testing is to ensure that the product is still in a stable state and that the change or modification did not introduce any new issues or defects.

Sanity testing is typically performed by running a subset of the full set of tests that were used during smoke testing.

These tests are designed to quickly validate that the product is still working correctly and that the change or modification did not introduce any new issues or defects.

The benefits of sanity testing are many.

It helps to ensure that small changes or modifications do not introduce new issues or defects, which can improve the overall quality of the product and increase customer satisfaction.

Sanity testing also helps to ensure that the product is still in a stable state after a change or modification has been made, which can save a lot of time and resources in the long run.

When to use Sanity testing?

Sanity testing is typically performed after a small change or modification has been made to a product.

This allows developers to quickly validate that the product is still working correctly and that the change or modification did not introduce any new issues or defects.

Examples of sanity testing in software development include testing a small change to the layout of a website, testing a new feature in an app, or testing the ability to send and receive emails in an email client after a small change in the email client’s codebase.

Comparison of Smoke and Sanity Testing

Both smoke testing and sanity testing are important methods for ensuring the quality and functionality of a product.

However, there are some key differences between the two.

Smoke testing is typically performed early on in the development process, before more extensive testing is performed, and its goal is to quickly identify any major issues or defects in a product.

Sanity testing, on the other hand, is typically performed after a small change or modification has been made to a product, and its goal is to ensure that the product is still in a stable state and that the change or modification did not introduce any new issues or defects.

Another difference between the two is the scope of testing. Smoke testing covers a broad range of features and functionalities, while sanity testing is focused on a specific subset of tests.

Smoke testing is more comprehensive and covers more areas, while sanity testing is more targeted and specific.

When deciding which testing method to use, it’s important to consider the stage of the development process, the scope of the changes made, and the resources available.

Smoke testing is best used early in the development process, before more extensive testing is performed.

Sanity testing is best used after a small change or modification has been made to a product.

Best practices for combining smoke and sanity testing include:

  • Performing smoke testing early in the development process to identify major issues or defects.
  • Performing sanity testing after a small change or modification has been made to a product to ensure that the product is still in a stable state.
  • Combining smoke and sanity testing to get the best of both worlds by identifying major issues early on, and then validating that changes or modifications don’t introduce new issues.

Conclusion

In conclusion, smoke testing and sanity testing are two important and commonly used methods for ensuring the quality and functionality of a product.

Smoke testing is used to quickly identify any major issues or defects, while sanity testing is used to ensure that a product is still in a stable state after a small change or modification.

Both methods are essential for improving the overall quality of the product and increasing customer satisfaction.

It is important to implement both of these testing methods in software development process to ensure the best quality of the product.


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