class RSpec::Rails::Matchers::RenderTemplate::RenderTemplateMatcher

def failure_message
  rescued_exception.message
end

def failure_message_when_negated
  "expected not to render #{expected.inspect}, but did"
end

def initialize(scope, expected, message = nil)
  @expected = Symbol === expected ? expected.to_s : expected
  @message = message
  @scope = scope
end

def matches?(*)
  match_unless_raises ActiveSupport::TestCase::Assertion do
    @scope.assert_template expected, @message
  end
end