Explian unit testing, integration testing and interface testing. Also report the types of integration testing .

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Unit Testing:
Each check is performed to decide whether the individual modules of the source code is working properly. Proof of this is each and every unit of the separate application by the developer in the developer environment.

Interface testing:
Interface testing is done to test whether the individual modules are communicating properly as three among other specifications.

Integration testing:
test interface is used primarily in testing the user interface GUI applications.

The types of integration testing are:

Integration Testing is done to verify connectivity by combining all the individual modules together and check functionality.

1) Bang Integration test

In the Integration test  Bang, the individual modules are not integrated until all modules are ready. Then they run to see if is working.

In this type of test, some disadvantages, as may occur,

Defects can be found at the later stage.

2) Top Down Integration Testing

It would be difficult to know whether the defect of waking up in the interface or in the module.

3) Testing integration fund

In the Top Down Integration test, high-level modules are integrated and tested first. ie test module sub main module. In such tests, stubs are used as temporary module if a module is not ready for integration testing.

At the bottom of the integration test, low level modules are integrated and tested is the first test module sub main module. as heels, drivers here are used as a temporary module for integration testing.

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