<p>I am testing a Ruby Rails website and wanted to get started with Unit and Functional testing.</p>

Cucumber
and
RSpec
are worth a look.  They encourage testing in a
behaviour-driven
, example-based style.
RSpec is a library for unit-level testing:
```
```
describe "hello_world"
  it "should say hello to the world" do
    # RSpec comes with its own mock-object framework built in,
    # though it lets you use others if you prefer
    world = mock("World", :population => 6e9)
    world.should_receive(:hello)
    hello_world(world)
  end
end
```
```
It has special support for Rails (e.g. it can test models, views and controllers in isolation) and can replace the testing mechanisms built in to Rails.
Cucumber (formerly known as the RSpec Story Runner) lets you write high-level acceptance tests in (fairly) plain English that you could show to (and agree with) a customer, then run them:
```
```
Story: Commenting on articles

  As a visitor to the blog
  I want to post comments on articles
  So that I can have my 15 minutes of fame

  Scenario: Post a new comment

    Given I am viewing an article
    When I add a comment "Me too!"
    And I fill in the CAPTCHA correctly
    Then I should see a comment "Me too!"
```
```