Unit Testing vs. Integration Testing

Unit Testing

Unit testing is a method of testing in which you try to determine whether your software functions correctly by breaking it down into small parts.

You are given a software problem that you’d like to solve, but instead of having the whole system to work with, you test it out by breaking it down into smaller, easier-to-test chunks.

Integration Testing

Integration testing (IT) is the act of testing individual components and sub-components as they are integrated into the application. It’s usually performed within the context of an existing integration test set, which is used to provide coverage for each individual sub-component.

However, an integration test can often be performed independently, and it’s important to consider how to effectively execute such tests.

The difference between Unit testing and Integration testing

Unit testing

Integration testing

The unit test is used to test a single module of a system for some sort of specific test.

Integration testing ensures that the module or program works together in a set.

It is performed once the programmer builds the program, tests the code, and believes that there is no error in that code.

It is conducted by the analyst or programmer and they take responsibility for the cause of the error.

The unit test ensures that the program must perform the task or function that was originally defined to it.

This testing ensures that the link and the interfaces between the programs work properly.

First, the program is developed, the tester verifies that it is error-free, and then the unit test is performed.

The procedure for the integration testing is the same as that of unit testing; here also, tests are developed and then according to the tests cases are developed.

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