There are a number of issues. First, the fundamental unit under test is the method/function, not the entire call stack. Second, complexity starts to grow when t

There are a number of issues. First, the fundamental unit under test is the method/function, not the entire call stack. Second, complexity starts to grow when there are code coverage gates in place. When I see tests that are orders of magnitude larger than the units they’re testing and contain mocked references that are used 7 stack frames deep I know the author had a fundamental misunderstanding of how to write helpful and maintainable tests.