How to test XML file using RSpec?

Hi I can recommend you to use custom matcher for this.

 require 'nokogiri'     RSpec::Matchers.define :have_xml do |xpath, text|         match do |body|        doc = Nokogiri::XML::Document.parse(body)        nodes = doc.xpath(xpath)        nodes.empty?.should be_false        if text          nodes.each do |node|            node.content.should == text          end        end        true         end      failure_message_for_should do |body|        "expected to find xml tag #{xpath} in:\n#{body}"         end      failure_message_for_should_not do |response|        "expected not to find xml tag #{xpath} in:\n#{body}"         end      description do        "have xml tag #{xpath}"         end    end

Full example can be found here https://gist.github.com/Fivell/8025849

No longer necessary to roll your own. We deal this problem daily, using the equivalent-xml matcher at https://github.com/mbklein/equivalent-xml .

require 'rspec/matchers'require 'equivalent-xml'...expect(node_1).to be_equivalent_to(node_2)

Has options for edge cases like whitespace-preservation.

Your other option is to use a formal XSD template for strict validation.

Give Approvals a try, it works with rspec, I have used for testing Json payload, and it is used with Minitest in exercism.io

EDIT

  it "returns available traffic information around me" do    post '/search_traffic_around', {location: [-87.688219, 41.941149]}.to_json    output = last_response.body    options = {format: :json, name: 'traffic_around_location'}    Approvals.verify(output,options)  end

the JSON I am verifying against is located in spec/fixtures folder named traffic_around_location.approved.json

Implementation where the above snippet is pulled from is available here

How it works is you supply it an expected Payload, JSON, XML, TXT and HTML this I am sure it supports in spec/fixtures and when you run the test it checks to confirm that the payload received matches the expected(approved) payload the test would pass if it matches else the test fails