test "new user form exists" do
    # Verify the form exists correctly.
    get :new
    assert_response :success
    assert_select 'form#new_user'
    assert_select 'input#username'
    assert_select 'input#password1'
    assert_select 'input#password2'
    assert_select 'input#email'
  end

  test "creating a user account" do
    username = 'testuser'
    password = 'abc123'
    email = 'test@user.com'

    # Verify that no user exists with this username or email.
    assert_nil User.find_by_username(username)
    assert_nil User.find_by_email(email)

    # Create the new user.
    post :create, :username => username, :password1 => password, :password2 => password, :email => email
    assert_response :redirect
    assert_redirected_to :controller => :entries, :action => :index

    # Verify the new user exists.
    new_user = User.authenticate(username, password)
    assert new_user
    assert_equal email, new_user.email
  end