Following is a quick way to identify code with low testability and hence low maintainability:
– If
– For
– While
– Switch
– Inline ifs
The number of decision points in a method is also used to define/measure cyclomatic complexity of the method, or more specifically, McCabe Cyclomatic Complexity. Thus, mathematically speaking, testability can be represented as following:
Testability, T of a method is inversely proportional to No. of Decision Points, D, found in the method.
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