github.com/bxcodec/faker/v4 (go): You can also add your own generator function to your own defined tags.   Single fake function can be used for retrieving particular values.     You can set length for your random strings also set boundary for your integers.   You can set the size for your random slices.  You also can use faker to generate your structs data randomly without any tag. And it will fill the data based on its data-type.
Keywords: dummy-data|dummy-data-generator|fake-data|faker|generator|go|golang|hactoberfest|mock-data|struct|testing-tools