gengo is a zero-dependency Go library for generating random test data No configuration, no boilerplate. Just fast, reliable random data whenever you need it.
You can easily generate all the hashes you want following the criteria you specify. Many other features coming to Hash class like the methods 'bury' or select_key, access the keys like methods: my_hash.my_key.other_key. You will be able to generate thousands of different hashes just declaring one and test easily APIs based on JSON for example.