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Integration Testing

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Integration Testing

Integration testing is defined as the testing of combined parts of an application to determine if they function correctly. Integration testing can be done in two ways: Bottom-up integration testing and Top-down integration testing. 

Integration Testing Method :

1: Bottom-up integration - This testing begins with unit testing, followed by tests of progressively higherlevel combinations of units called modules or builds. 

2: Top-down integration - In this testing, the highest-level modules are tested first and progressively, lower-level modules are tested thereafter. 

In a comprehensive software development environment, bottom-up testing is usually done first, followed by top-down testing. The process concludes with multiple tests of the complete application, preferably in scenarios designed to mimic actual situations.