Minitest controller test with clearance

pages_controller_test.rb

require 'test_helper'

describe PagesController do
  before{ sign_in }

  subject{ PagesController.new }

  %w{some_page another_page}.each do |page|
    describe "rendering the #{page} page" do
      it 'should render successfully' do
        get :show, :id => page
        assert_response(:success)
        assert_template(page)
      end
    end
  end
end

test_helper.rb

# This just shows the additions to our test_helper file
# Full file included under test_helper_full

# Add clearance test methods
require 'clearance/testing'

require "minitest/matchers"
require "clearance/testing"

# Register the Clearance matchers to minitest
Clearance::Testing::Matchers.module_eval do
  def self.included(base)
    instance_methods.each do |name|
      base.register_matcher name, name
    end
  end
end

class MiniTest::Rails::ActionController::TestCase
  include Clearance::Testing::Matchers
  include Clearance::Testing::Helpers

  def sign_in
    sign_in_as create(:user)
  end
end

test_helper_full.rb

ENV["RAILS_ENV"] = "minitest"
require File.expand_path('../../config/environment', __FILE__)
require "rails/test_help"

class << ActiveSupport::TestCase
  remove_method :describe
end

require "minitest/spec"
require "minitest/autorun"
require "minitest/rails"
#require "minitest/rails/shoulda"

# Uncomment if you want Capybara in accceptance/integration tests
require "minitest/rails/capybara"

# Uncomment if you want awesome colorful output
require "minitest/pride"

# Add clearance test methods
require 'clearance/testing'

class MiniTest::Rails::ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.(yml|csv) for all tests in alphabetical order.
  # fixtures :all

  # Add more helper methods to be used by all tests here...
  include FactoryGirl::Syntax::Methods
end

# Do you want all existing Rails tests to use MiniTest::Rails?
# Comment out the following and either:
# A) Change the require on the existing tests to `require "minitest_helper"`
# B) Require this file's code in test_helper.rb

# MiniTest::Rails.override_testunit!

#Credit to wojtekmach at http://www.rubyflow.com/items/7606-writing-minitest-extensions
module MiniTest::Assertions
  def assert_changes(obj, method, exp_diff)
    before = obj.send method
    yield
    after = obj.send method
    diff = after - before

    assert_equal exp_diff, diff, "Expected #{obj.class.name}##{method} to change by #{exp_diff}, changed by #{diff}"
  end
end

module MiniTest::Expectations
  infect_an_assertion :assert_changes, :must_change
end

require "minitest/matchers"
require "clearance/testing"

# Register the Clearance matchers to minitest
Clearance::Testing::Matchers.module_eval do
  def self.included(base)
    instance_methods.each do |name|
      base.register_matcher name, name
    end
  end
end

class MiniTest::Rails::ActionController::TestCase
  include Clearance::Testing::Matchers
  include Clearance::Testing::Helpers

  # Override sign_in because I don't want to have FactoryGirl...
  def sign_in
    sign_in_as create(:user)
  end
end

You don't need to override sign_in since you are using FactoryGirl.