How do I produce an initial corpus?

[firelizzard18]

Go's documentation's example of a fuzz test is:

I want to use go-fuzz-headers and I want to add seed corpus values that correspond to meaningful struct values. How do I do that?

[AdamKorcz]

That is a good question. I will look into that.

[finicu212]

Hello. I also am curious about this. My use case is that I am fuzzing an API based on its OpenAPI schema, and I am transforming each schema into a Go struct. Then, I want to create some random objects of those struct types, by providing the corpus with the example OpenAPI/Swagger field.

Here is a snippet of my OpenAPI spec:

    Category:
      type: object
      properties:
        id:
          type: integer
          format: int64
          example: 1
        name:
          type: string
          example: Dogs

In this case I would like to pass 1 for the id field, and Dogs for the name field in the corpus, for the Category struct type

@AdamKorcz

[smyrman]

What about an interface like this?

Bytes(...any) []byte

Encode each passed in parameter equally to how you would decode it with a Consumer instance.

Maybe add a Producer type to allow the same configuration as a Consumer, so that Bytes on a package level is just a shorthand for fuzz.NewProducer().Bytes()