Feature: Signing up
    In order to be attributed for my work
    As a user
    I want to be able to sign u

Scenario: Signing up
    Given I am on the homepage
    When I follow "Sign up"
    And I fill in "Email" with "user@ticketee.com"
    And I fill in "Password" with "password"
    Ambiguous match,found 2 elements matching field "Password" (Capybara::Ambiguous)
./features/step_definitions/web_steps.rb:10:in `/^(?:|I )fill in "([^"]*)" with "([^"]*)"$/'
features/signing_up.feature:10:in `And I fill in "Password" with "password"'
    And I fill in "Password confirmation" with "password"
    And I press "Sign up"
    Then I should see "You have signed up successfully."

步骤定义是

When /^(?:|I )fill in "([^"]*)" with "([^"]*)"$/ do |field,value|
  fill_in(field,:with => value)
end