RSpec how to very JSON response with params hash

Option 1:

The params hash will be defined as the below

let!(:valid_params) { { event_type: 'income', event_date: Time.now, value: 1000, note: 'update record 2' } }

Then when performing an update (PUT action) we will receive the response in JSON

So we can compare every element of the hash with JSON object

	expect(JSON.parse(response.body)["value"]).to eq(valid_params[:value])
	expect(JSON.parse(response.body)["note"]).to eq(valid_params[:note])
Option 2:
Another way is to use a custom matcher

Define a matcher as the following:

RSpec::Matchers.define :have_updated_attributes do |expected_attributes|
	match do |actual_json|
		return false unless actual_json
	    expected_attributes.all? do |key, value|
	    	if value && (value.is_a?(Time) || value.is_a?(DateTime))
	    		actual_json[key.to_s][0..18] == value.strftime("%Y-%m-%dT%H:%M:%S")
	    	else
	      		actual_json[key.to_s] == value		
	    	end
	    end
  	end
    failure_message do |actual_json|
	    "expected is: #{expected_attributes} but actual is: #{actual_json}"
  	end
end

Then check everything in one command

expect(JSON.parse(response.body)).to have_updated_attributes(valid_params)







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