Add more methods to Micro::Case::Result quack like a Hash

[serradura]

Definition of Done:

Add these new methods into Micro::Case::Result:

• #key? - https://apidock.com/ruby/v2_2_9/Hash/key%3F
• #value? - https://apidock.com/ruby/v2_2_9/Hash/value%3F
• #slice() - https://apidock.com/ruby/v2_5_5/Hash/slice

Documentation

• Update README.md - https://github.com/serradura/u-case/blob/769b9bfbc8440c81a1e8a6811369f2819a21a07a/README.md#microcaseresult---what-is-a-use-case-result

Look here to see the implementation of the methods #[] and #values_at().

Below are the places to put the tests to assert these new methods:

• https://github.com/serradura/u-case/blob/main/test/micro/case/result_test.rb#L59-L62
• https://github.com/serradura/u-case/blob/main/test/micro/case/result_test.rb#L105-L108

Because of the Hash#slice method does not exists in older Ruby versions, we will need to create an util to do this inside of Micro::Case::Result#slice. e.g:

module Micro
  class Case
    module Utils
      def self.slice_hash(hash, keys)
        if Kind::Of::Hash(hash).respond_to?(:slice)
          hash.slice(*keys)
        else
          hash.select { |key, _value| keys.include?(key) }
        end
      end
    end
  end
end

[serradura]

Thanks, @tomascco to help us to release these new features. 👏