Integration Testing

Integration testing (sometimes called Integration and Testing, is the phase in software testing in which individual software modules are combined and tested as a group. It occurs after unit testing and before system testing. Integration testing takes as its input modules that have been unit tested, groups them in larger aggregates, applies tests defined in an integration test plan to those aggregates, and delivers as its output the integrated system ready for system testing.

Integration Testing typically involves the following Steps:

Step 1: Create a Test Plan

Step 2: Create Test Cases and Test Data

Step 3: If applicable create scripts to run test cases

Step 4: Once the components have been integrated execute the test cases

Step 5: Fix the bugs if any and re test the code

Step 6: Repeat the test cycle until the components have been successfully integrated

As you may have read in the other articles in the series, this document typically describes one or more of the following:

- How the tests will be carried out
- The list of things to be Tested
- Roles and Responsibilities
- Prerequisites to begin Testing
- Test Environment
- Assumptions
- What to do after a test is successfully carried out
- What to do if test fails