$ crystal spec spec/vcr_spec.cr:30
F

Failures:

  1) VCR HTTP::Request#to_json returns a json string with IO body
     Failure/Error: request.to_json.should eq("{\"method\":\"POST\",\"host\":null,\"resource\":\"http://httpbin.org/post\",\"headers\":{\"Content-Type\":[\"text/plain\"]},\"body\":\"hello crystal\\n\",\"query_params\":{}}")

       Expected: "{\"method\":\"POST\",\"host\":null,\"resource\":\"http://httpbin.org/post\",\"headers\":{\"Content-Type\":[\"text/plain\"]},\"body\":\"hello crystal\\n\",\"query_params\":{}}"
            got: "{\"method\":\"POST\",\"host\":null,\"resource\":\"http://httpbin.org/post\",\"headers\":{\"Content-Type\":[\"text/plain\"]},\"body\":\"#<File:0x7fe3a4c5cee0>\",\"query_params\":{}}"