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module ActionDispatch
module Assertions
# A small suite of assertions that test responses from \Rails applications.
module ResponseAssertions
RESPONSE_PREDICATES = { # :nodoc:
success: :successful?,
missing: :not_found?,
redirect: :redirection?,
error: :server_error?,
}
# Asserts that the response is one of the following types:
#
# * <tt>:success</tt> - Status code was in the 200-299 range
# * <tt>:redirect</tt> - Status code was in the 300-399 range
# * <tt>:missing</tt> - Status code was 404
# * <tt>:error</tt> - Status code was in the 500-599 range
#
# You can also pass an explicit status number like <tt>assert_response(501)</tt>
# or its symbolic equivalent <tt>assert_response(:not_implemented)</tt>.
# 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
def assert_response(type, message = nil)
message ||= generate_response_message(type)
if RESPONSE_PREDICATES.keys.include?(type)
assert @response.send(RESPONSE_PREDICATES[type]), message
else
assert_equal AssertionResponse.new(type).code, @response.response_code, message
end
end
# Asserts that the redirection options passed in match those of the redirect called in the latest action.
# This match can be partial, such that <tt>assert_redirected_to(controller: "weblog")</tt> will also
# match the redirection of <tt>redirect_to(controller: "weblog", action: "show")</tt> and so on.
#
# # 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)
def assert_redirected_to(options = {}, message = nil)
assert_response(:redirect, message)
return true if options === @response.location
redirect_is = normalize_argument_to_redirection(@response.location)
redirect_expected = normalize_argument_to_redirection(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
private
# Proxy to to_param if the object will respond to it.
def parameterize(value)
value.respond_to?(:to_param) ? value.to_param : value
end
def normalize_argument_to_redirection(fragment)
if Regexp === fragment
fragment
else
handle = @controller || ActionController::Redirecting
handle._compute_redirect_to_location(@request, fragment)
end
end
def generate_response_message(expected, actual = @response.response_code)
"Expected response to be a <#{code_with_name(expected)}>,"\
" but was a <#{code_with_name(actual)}>"
.concat(location_if_redirected).concat(response_body_if_short)
end
def response_body_if_short
return "" if @response.body.size > 500
"\nResponse body: #{@response.body}"
end
def location_if_redirected
return "" unless @response.redirection? && @response.location.present?
location = normalize_argument_to_redirection(@response.location)
" redirect to <#{location}>"
end
def code_with_name(code_or_name)
if RESPONSE_PREDICATES.values.include?("#{code_or_name}?".to_sym)
code_or_name = RESPONSE_PREDICATES.invert["#{code_or_name}?".to_sym]
end
AssertionResponse.new(code_or_name).code_and_name
end
end
end
end
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