Question: 6 a ) What do you mean by Test - Driven Development ( TDD ) ? Explain the laws of TDD . List the five

6 a) What do you mean by Test-Driven Development (TDD)? Explain the laws
of TDD. List the five principles of writingclean tests.
b) Why do we need refactoring? Explain the refactoring process with a
suitable example/diagram.

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