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module ActionDispatch
module Assertions
# A small suite of assertions that test responses from Rails applications.
module ResponseAssertions
# Asserts that the response is one of the following types:
#
# * <tt>:success</tt> - Status code was 200
# * <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 assert_response(501)
# or its symbolic equivalent assert_response(:not_implemented).
# See ActionDispatch::StatusCodes for a full list.
#
# ==== Examples
#
# # assert that the response was a redirection
# assert_response :redirect
#
# # assert that the response code was status code 401 (unauthorized)
# assert_response 401
#
def assert_response(type, message = nil)
validate_request!
if [ :success, :missing, :redirect, :error ].include?(type) && @response.send("#{type}?")
assert_block("") { true } # to count the assertion
elsif type.is_a?(Fixnum) && @response.response_code == type
assert_block("") { true } # to count the assertion
elsif type.is_a?(Symbol) && @response.response_code == ActionDispatch::StatusCodes::SYMBOL_TO_STATUS_CODE[type]
assert_block("") { true } # to count the assertion
else
if @controller && @response.error?
exception = @controller.template.instance_variable_get(:@exception)
exception_message = exception && exception.message
assert_block(build_message(message, "Expected response to be a <?>, but was <?>\n<?>", type, @response.response_code, exception_message.to_s)) { false }
else
assert_block(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code)) { false }
end
end
end
# Assert that the redirection options passed in match those of the redirect called in the latest action.
# This match can be partial, such that assert_redirected_to(:controller => "weblog") will also
# match the redirection of redirect_to(:controller => "weblog", :action => "show") and so on.
#
# ==== Examples
#
# # assert that the redirection was to the "index" action on the WeblogController
# assert_redirected_to :controller => "weblog", :action => "index"
#
# # assert that the redirection was to the named route login_url
# assert_redirected_to login_url
#
# # assert that the redirection was to the url for @customer
# assert_redirected_to @customer
#
def assert_redirected_to(options = {}, message=nil)
validate_request!
assert_response(:redirect, message)
return true if options == @response.redirected_to
# Support partial arguments for hash redirections
if options.is_a?(Hash) && @response.redirected_to.is_a?(Hash)
return true if options.all? {|(key, value)| @response.redirected_to[key] == value}
end
redirected_to_after_normalisation = normalize_argument_to_redirection(@response.redirected_to)
options_after_normalisation = normalize_argument_to_redirection(options)
if redirected_to_after_normalisation != options_after_normalisation
flunk "Expected response to be a redirect to <#{options_after_normalisation}> but was a redirect to <#{redirected_to_after_normalisation}>"
end
end
# Asserts that the request was rendered with the appropriate template file or partials
#
# ==== Examples
#
# # assert that the "new" view template was rendered
# assert_template "new"
#
# # assert that the "_customer" partial was rendered twice
# assert_template :partial => '_customer', :count => 2
#
# # assert that no partials were rendered
# assert_template :partial => false
#
def assert_template(options = {}, message = nil)
validate_request!
case options
when NilClass, String
rendered = (@controller.template.rendered[:template] || []).map { |t| t.identifier }
msg = build_message(message,
"expecting <?> but rendering with <?>",
options, rendered.join(', '))
assert_block(msg) do
if options.nil?
@controller.template.rendered[:template].blank?
else
rendered.any? { |t| t.match(options) }
end
end
when Hash
if expected_partial = options[:partial]
partials = @controller.template.rendered[:partials]
if expected_count = options[:count]
found = partials.detect { |p, _| p.identifier.match(expected_partial) }
actual_count = found.nil? ? 0 : found.second
msg = build_message(message,
"expecting ? to be rendered ? time(s) but rendered ? time(s)",
expected_partial, expected_count, actual_count)
assert(actual_count == expected_count.to_i, msg)
else
msg = build_message(message,
"expecting partial <?> but action rendered <?>",
options[:partial], partials.keys)
assert(partials.keys.any? { |p| p.identifier.match(expected_partial) }, msg)
end
else
assert @controller.template.rendered[:partials].empty?,
"Expected no partials to be rendered"
end
end
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)
after_routing = @controller.url_for(fragment)
if after_routing =~ %r{^\w+://.*}
after_routing
else
# FIXME - this should probably get removed.
if after_routing.first != '/'
after_routing = '/' + after_routing
end
@request.protocol + @request.host_with_port + after_routing
end
end
def validate_request!
unless @request.is_a?(ActionDispatch::Request)
raise ArgumentError, "@request must be an ActionDispatch::Request"
end
end
end
end
end
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