What is the difference between integration testing and functional testing? [closed]

Solution 1:

Integration testing is when you test more than one component and how they function together. For instance, how another system interacts with your system, or the database interacts with your data abstraction layer. Usually, this requires a fully installed system, although in its purest forms it does not.

Functional testing is when you test the system against the functional requirements of the product. Product/Project management usually writes these up and QA formalizes the process of what a user should see and experience, and what the end result of those processes should be. Depending on the product, this can be automated or not.

Solution 2:

Functional Testing:

Yes, we are testing the product or software as a whole functionally whether it is functionally working properly or not (testing buttons, links etc.)

For example: Login page.

you provide the username and password, you test whether it is taking you to home page or not.

Integration Testing:

Yes, you test the integrated software only but you test where the data flow is happening and is there any changes happening in the database.

For example: Sending e-mail

You send one mail to someone, there is a data flow and also change in database (the sent table increases value by 1)

Remember - clicking links and images is not integration testing. Hope you understood why, because there is no change in database by just clicking on a link.

Hope this helped you.

Solution 3:

Functional Testing: It is a process of testing where each and every component of the module is tested. Eg: If a web page contains text field, radio botton, Buttons and Drop down etc components needed to be checked.

Integration Testing: Process where the dataflow between 2 modules are checked.