First create an integration test. Then, to test caching of the "/pages/about" and "/pages/contact" pages, add a method like this:

  def test_caching
    assert_cache_pages("/pages/about", "/pages/contact")
  end

The assert_cache_pages method will

* first make sure that the urls are not cached,
* execute a get on each request,
* assert that the corresponding cache files have been created.

You can also give a block to the assertcachepages method. Instead of executing a get on each url, it will yield the urls. For example:

  def test_caching
    assert_cache_pages("/pages/about",
                          "/pages/contact") do |url_about, url_contact|
      post url_about
      post url_contact
    end
  end  

You will also certainly want (and that's really the most interesting part) to check if your cached pages expires when the user is doing some action. For that, here is the assertexpirepages method:

  def test_expiring
    assert_expire_pages("/news/list", "/news/show/1") do |*urls|
      post "/news/delete/1"
    end
  end  

Here the assert_expire_pages method will

* check that the urls are cached,
* execute the post request,
* and assert that the urls are no more cached.

This is great for testing your cache sweepers logic.

There is currently no advanced documentation for this plugin.