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module ActionDispatch::Assertions::ResponseAssertions

A small suite of assertions that test responses from Rails applications.

Public instance methods

assert_redirected_to(url_options = {}, options = {}, message = nil)

Asserts that the response is a redirect to a URL matching the given options.

# Asserts that the redirection was to the "index" action on the WeblogController
assert_redirected_to controller: "weblog", action: "index"

# Asserts that the redirection was to the named route login_url
assert_redirected_to login_url

# Asserts that the redirection was to the URL for @customer
assert_redirected_to @customer

# Asserts that the redirection matches the regular expression
assert_redirected_to %r(\Ahttp://example.org)

# Asserts that the redirection has the HTTP status code 301 (Moved
# Permanently).
assert_redirected_to "/some/path", status: :moved_permanently
Source code GitHub 
# File actionpack/lib/action_dispatch/testing/assertions/response.rb, line 60
def assert_redirected_to(url_options = {}, options = {}, message = nil)
  options, message = {}, options unless options.is_a?(Hash)

  status = options[:status] || :redirect
  assert_response(status, message)
  return true if url_options === @response.location

  redirect_is       = normalize_argument_to_redirection(@response.location)
  redirect_expected = normalize_argument_to_redirection(url_options)

  message ||= "Expected response to be a redirect to <#{redirect_expected}> but was a redirect to <#{redirect_is}>"
  assert_operator redirect_expected, :===, redirect_is, message
end

assert_response(type, message = nil)

Asserts that the response is one of the following types:

  • :success - Status code was in the 200-299 range

  • :redirect - Status code was in the 300-399 range

  • :missing - Status code was 404

  • :error - Status code was in the 500-599 range

You can also pass an explicit status number like assert_response(501) or its symbolic equivalent assert_response(:not_implemented). See Rack::Utils::SYMBOL_TO_STATUS_CODE for a full list.

# Asserts that the response was a redirection
assert_response :redirect

# Asserts that the response code was status code 401 (unauthorized)
assert_response 401
Source code GitHub 
# File actionpack/lib/action_dispatch/testing/assertions/response.rb, line 33
def assert_response(type, message = nil)
  message ||= generate_response_message(type)

  if RESPONSE_PREDICATES.key?(type)
    assert @response.public_send(RESPONSE_PREDICATES[type]), message
  else
    assert_equal AssertionResponse.new(type).code, @response.response_code, message
  end
end

Definition files