FizzBuzz: "Fizz" Requirement

Implement the Fizz feature of the FizzBuzz kata by following the TDD approach.

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Fizz scenario

So far, we’ve only dealt with the not divisible scenario, which only covers the numbers not divisible by 3 and 5. In this lesson, let’s build the Fizz feature.

Handling input 3

As a reminder, our function should give back Fizz when the number passed is divisible by 3.

The Red phase

To obey the TDD constraints, we need to start writing a test that will take us to the Red stage:

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