Practical fuzzing

This recipe will explore fuzzing and how it can be used to help validate functions. In the Currency conversions and float64 considerations recipe from Chapter 3, Data Conversion and Composition, we created a function that takes decimal US currency as a string and returns an int64 version representing cents. We'll modify that function and demonstrate finding a panic with fuzzing.

Getting ready

Configure your environment according to these steps:

1. Refer to the Getting ready section of the Mocking using the standard library recipe of this chapter.
2. Run the go get github.com/dvyukov/go-fuzz/go-fuzz command.
3. Run the go get github.com/dvyukov/go-fuzz/go-fuzz-build command.

How to do it...

These steps cover writing and running your application:

1. From your terminal/console application, create the chapter8/fuzz directory and navigate to it.
2. Copy tests from https://github.com/agtorre/go-cookbook/tree/master/chapter8/fuzz or use this as an exercise to write some of your own code.
3. Create a file...