Module Spec::Rails::Matchers

  1. lib/spec/rails/matchers/ar_be_valid.rb
  2. lib/spec/rails/matchers/assert_select.rb
  3. lib/spec/rails/matchers/have_text.rb
  4. lib/spec/rails/matchers/include_text.rb
  5. lib/spec/rails/matchers/render_template.rb
  6. lib/spec/rails/matchers/redirect_to.rb
  7. lib/spec/rails/matchers.rb
  8. show all

Spec::Rails::Expectations::Matchers provides several expectation matchers intended to work with Rails components like models and responses. For example:

response.should redirect_to("some/url") #redirect_to(url) is the matcher.

In addition to those you see below, the arbitrary predicate feature of RSpec makes the following available as well:

response.should be_success #passes if response.success?
response.should be_redirect #passes if response.redirect?

Note that many of these matchers are part of a wrapper of assert_select, so the documentation comes straight from that with some slight modifications. assert_select is a Test::Unit extension originally contributed to the Rails community as a plugin by Assaf Arkin and eventually shipped as part of Rails.

For more info on assert_select, see the relevant Rails documentation.

Public instance methods

be_valid ()


response.should be_valid
response.should_not be_valid
[show source]
# File lib/spec/rails/matchers/ar_be_valid.rb, line 38
      def be_valid
response.should have_rjs(*args, &block)

wrapper for assert_select_rjs

see documentation for assert_select_rjs at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 124
      def have_rjs(*args, &block), self, *args, &block)
response.should have_tag(*args, &block)
string.should have_tag(*args, &block)

wrapper for assert_select with additional support for using css selectors to set expectation on Strings. Use this in helper specs, for example, to set expectations on the results of helper methods.


# in a controller spec
response.should have_tag("div", "some text")

# in a helper spec (person_address_tag is a method in the helper)
person_address_tag.should have_tag("input#person_address")

see documentation for assert_select at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 92
      def have_tag(*args, &block)
        @__current_scope_for_assert_select =, self, *args, &block)
response.should have_text(expected)
response.should_not have_text(expected)

Accepts a String or a Regexp, matching a String using == and a Regexp using =~.

If response_or_text has a body, then that is used as to match against else it uses response_or_text

Use this instead of response.should have_tag() when you want to match the whole string or whole body


response.should have_text("This is the expected text")
[show source]
# File lib/spec/rails/matchers/have_text.rb, line 51
      def have_text(text)
response.should include_text(expected)
response.should_not include_text(expected)

Accepts a String, matching using include?

Use this instead of response.should have_text() when you either don’t know or don’t care where on the page this text appears.


response.should include_text("This text will be in the actual string")
[show source]
# File lib/spec/rails/matchers/include_text.rb, line 48
      def include_text(text)
response.should redirect_to(url)
response.should redirect_to(:action => action_name)
response.should redirect_to(:controller => controller_name, :action => action_name)
response.should_not redirect_to(url)
response.should_not redirect_to(:action => action_name)
response.should_not redirect_to(:controller => controller_name, :action => action_name)

Passes if the response is a redirect to the url, action or controller/action. Useful in controller specs (integration or isolation mode).


response.should redirect_to("path/to/action")
response.should redirect_to("")
response.should redirect_to(:action => 'list')
[show source]
# File lib/spec/rails/matchers/redirect_to.rb, line 120
      def redirect_to(opts), opts)
response.should render_template(template)
response.should_not render_template(template)

For use in controller code examples (integration or isolation mode).

Passes if the specified template (view file) is rendered by the response. This file can be any view file, including a partial. However if it is a partial it must be rendered directly i.e. you can’t detect that a partial has been rendered as part of a view using render_template. For that you should use a message expectation (mock) instead:

controller.should_receive(:render).with(:partial => 'path/to/partial')

template can include the controller path. It can also include an optional extension, which you only need to use when there is ambiguity.

Note that partials must be spelled with the preceding underscore.


response.should render_template('list')
response.should render_template('same_controller/list')
response.should render_template('other_controller/list')

# with extensions
response.should render_template('list.rjs')
response.should render_template('list.haml')
response.should render_template('same_controller/list.rjs')
response.should render_template('other_controller/list.rjs')

# partials
response.should render_template('_a_partial')
response.should render_template('same_controller/_a_partial')
response.should render_template('other_controller/_a_partial')
[show source]
# File lib/spec/rails/matchers/render_template.rb, line 108
      def render_template(path), @controller)
response.should send_email(*args, &block)

wrapper for assert_select_email

see documentation for assert_select_email at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 134
      def send_email(*args, &block), self, *args, &block)
with_encoded (*args, &block)

wrapper for assert_select_encoded

see documentation for assert_select_encoded at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 141
      def with_encoded(*args, &block)
        should, self, *args, &block)
with_tag (*args, &block)

wrapper for a nested assert_select

response.should have_tag("div#form") do
  with_tag("input#person_name[name=?]", "person[name]")

see documentation for assert_select at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 103
      def with_tag(*args, &block)
        @__current_scope_for_assert_select.should have_tag(*args, &block)
without_tag (*args, &block)

wrapper for a nested assert_select with false

response.should have_tag("div#1") do
  without_tag("span", "some text that shouldn't be there")

see documentation for assert_select at

[show source]
# File lib/spec/rails/matchers/assert_select.rb, line 114
      def without_tag(*args, &block)
        @__current_scope_for_assert_select.should_not have_tag(*args, &block)