PassValidator Kata
Explore how to apply the test-driven development approach to build a password validation function in Go. Learn to write tests covering multiple validation rules, handle errors effectively, and refactor code for clarity and maintainability using practical examples and best practices.
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Now, we’re going to implement a less academic exercise to reinforce our knowledge of TDD. The exercise is the Password Validation kata. Theoretically, this function could be invoked to validate the user’s password in a registration form. It will accept a password as the input, and it returns a bool value indicating whether the validation succeeded along with the reasons why the validation failed. A password is valid only if it meets all the following constraints:
- It must be at least eight characters long.
- It must contain at least two numbers.
- It must contain at least one capital letter.
- It must contain at least one special character.
In addition, the function must be able to manage multiple validation errors at the same time.