In this section, you will learn about two kinds of testing strategies: how the logic is tested (via black-box and white-box testing) and how the testing is conducted (by top-down and
Bottom-up testing takes an opposite approach based on the principle that any change to a module can affect its functioning. In bottom-up testing, the entire module should be the unit of test evaluation. All modules are coded and tested individually. A fourth level of testing is frequently added after unit testing to test the functioning of execute units. Then, execute units are turned over to the testing team for integration and systems testing.
The next section discusses the development of test cases to match whatever strategy is defined. Then, each level of testing is discussed in detail with ABC Video test examples to show how to design each test.