# module ActionDispatch::Assertions::ResponseAssertions

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

### Public Instance Methods

assert_redirected_to(options = {}, message=nil) click to toggle source

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

    # File lib/action_dispatch/testing/assertions/response.rb, line 57
    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)

      if redirect_is != redirect_expected
        flunk(build_message(message, "Expected response to be a redirect to <?> but was a redirect to <?>", redirect_expected, redirect_is))
      end
    end

assert_response(type, message = nil) click to toggle source

Asserts that the response is one of the following types:

- `:success` - Status code was 200

- `: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.

#### Examples¶ ↑

    # assert that the response was a redirection
    assert_response :redirect

    # assert that the response code was status code 401 (unauthorized)
    assert_response 401

    # File lib/action_dispatch/testing/assertions/response.rb, line 28
    def assert_response(type, message = nil)
      validate_request!

      if type.in?([:success, :missing, :redirect, :error]) && @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 == Rack::Utils::SYMBOL_TO_STATUS_CODE[type]
        assert_block("") { true } # to count the assertion
      else
        flunk(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code))
      end
    end