method

assert_template

v2.3.8 - Show latest stable - 2 notes - Class: ActionController::Assertions::ResponseAssertions

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What's this?

assert_template(options = {}, message = nil) public

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 "new" view template was rendered with Symbol
  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

Show source

# File actionpack/lib/action_controller/assertions/response_assertions.rb, line 99
      def assert_template(options = {}, message = nil)
        clean_backtrace do
          case options
           when NilClass, String, Symbol
            rendered = @response.rendered[:template].to_s
            msg = build_message(message,
                    "expecting <?> but rendering with <?>",
                    options, rendered)
            assert_block(msg) do
              if options.nil?
                @response.rendered[:template].blank?
              else
                rendered.to_s.match(options.to_s)
              end
            end
          when Hash
            if expected_partial = options[:partial]
              partials = @response.rendered[:partials]
              if expected_count = options[:count]
                found = partials.detect { |p, _| p.to_s.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.to_s.match(expected_partial) }, msg)
              end
            else
              assert @response.rendered[:partials].empty?,
                "Expected no partials to be rendered"
            end
          else
            raise ArgumentError  
          end
        end
      end

February 1, 2009 - (v2.2.1)

3 thanks

You can't use Symbols, but you can use Regexps

You can’t use Symbol (although Symbol is accepted with render :action => :new), like:

assert_template :new # WON'T WORK!

But you can use Regexp, e.g.:

assert_template /new/ # WORKS OK

Note that the String matched with your Regexp is the full path to the template relative to the view/ directory of your app, so this will not work:

assert_template /^new$/ # WON'T WORK!

However this might:

assert_template /^employees\/new.html.haml$/

November 4, 2009

1 thank

As of v2.3.4 you can use Symbols

This commit fixes using a Symbol with assert_template

http://github.com/rails/rails/commit/f383a4aa333cd8a99003eb1bdbb27b6fdea1056c

assert_template :new # works in 2.3.4

assert_template

Related methods

Examples

You can't use Symbols, but you can use Regexps

As of v2.3.4 you can use Symbols