Here's a not too well-known instance of the use of $\varepsilon$ in mathematics: One somewhat well-known transformation for accelerating the convergence of a sequence is the Shanks transformation (after Daniel Shanks, who is probably more well-known for his number-theoretic contributions).
Thereâs no set way of creating a test plan, but there are common suggestions on what to include. Test plans donât need to be done a certain way, but if youâre new to writing test plans, the IEEE 829 is a good place to start. This standard for test plan documentation is used for software and system testing. It is a good âtemplateâ for writing your own test plan documents.
Whereas the test plan describes what to test, a test case describes how to perform a particular test. You need to develop a test case for each test listed in the test plan. Test cases should be written by a team member who understands the function or technology being tested, and each test case should be submitted for peer review.