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What are the advantages and disadvantages of top down and bottom up testing?
Wiki User
∙ 9y ago
Integration testing is a typically incremental process which involves testing whether individual modules within a system interact correctly.
Top-down Integration Testing
Top-down integration testing involves starting at the top of a system hierarchy at the user interface and using stubs to test from the top down until the entire system has been implemented. There is no need for test drivers as the user interface provides the means to enter test data. Using Top-down integration testing means that there is a visible system with a certain level of functionality early on.
Bottom-up Integration Testing
Bottom-up integration testing is the opposite of Top-down integration testing. Sub-systems are initially formed at the bottom of the system hierarchy. These are then tested and added to the modules above them to form larger sub-systems which are then tested. Bottom-up integration testing requires the heavy use of drivers instead of stubs.
Wiki User
∙ 11y ago
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