method

assert_template

v3.1.0 - Show latest stable - 0 notes - Class: ActionController::TemplateAssertions

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 "_customer" partial was rendered twice
assert_template :partial => '_customer', :count => 2

# assert that no partials were rendered
assert_template :partial => false

In a view test case, you can also assert that specific locals are passed to partials:

# assert that the "_customer" partial was rendered with a specific object
assert_template :partial => '_customer', :locals => { :customer => @customer }

Show source

# File actionpack/lib/action_controller/test_case.rb, line 71
    def assert_template(options = {}, message = nil)
      validate_request!

      case options
      when NilClass, String, Symbol
        options = options.to_s if Symbol === options
        rendered = @templates
        msg = build_message(message,
                "expecting <?> but rendering with <?>",
                options, rendered.keys.join(', '))
        assert_block(msg) do
          if options.nil?
            @templates.blank?
          else
            rendered.any? { |t,num| t.match(options) }
          end
        end
      when Hash
        if expected_partial = options[:partial]
          if expected_locals = options[:locals]
            actual_locals = @locals[expected_partial.to_s.sub(/^_/,'')]
            expected_locals.each_pair do |k,v|
              assert_equal(v, actual_locals[k])
            end
          elsif expected_count = options[:count]
            actual_count = @partials[expected_partial]
            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)
          elsif options.key?(:layout)
            msg = build_message(message,
                    "expecting layout <?> but action rendered <?>",
                    expected_layout, @layouts.keys)

            case layout = options[:layout]
            when String
              assert(@layouts.include?(expected_layout), msg)
            when Regexp
              assert(@layouts.any? {|l| l =~ layout }, msg)
            when nil
              assert(@layouts.empty?, msg)
            end
          else
            msg = build_message(message,
                    "expecting partial <?> but action rendered <?>",
                    options[:partial], @partials.keys)
            assert(@partials.include?(expected_partial), msg)
          end
        else
          assert @partials.empty?,
            "Expected no partials to be rendered"
        end
      end
    end

assert_template

Related methods

Examples