Integration test methods such as ActionDispatch::Integration::RequestHelpers#get and ActionDispatch::Integration::RequestHelpers#post return objects of class TestResponse, which represent the HTTP response results of the requested controller actions.

See Response for more information on controller response objects.

Methods
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M
Class Public methods
from_response(response)

Source: show | on GitHub 

# File actionpack/lib/action_dispatch/testing/test_response.rb, line 9
def self.from_response(response)
  new.tap do |resp|
    resp.status  = response.status
    resp.headers = response.headers
    resp.body    = response.body
  end
end
Instance Public methods
merge_default_headers(original, *args)

Source: show | on GitHub 

# File actionpack/lib/action_dispatch/testing/test_response.rb, line 29
def merge_default_headers(original, *args)
  # Default headers are already applied, no need to merge them a second time.
  # This makes sure that default headers, removed in controller actions, will
  # not be reapplied to the test response.
  original
end