dates in a cucumber table need to be in YYYY MM DD format

result.txt

(::) failed steps (::)

Validation failed: Start at can't be blank, End at can't be blank (ActiveRecord::RecordInvalid)
./features/step_definitions/view_calendar_steps.rb:7:in `block (2 levels) in <top (required)>'
./features/step_definitions/view_calendar_steps.rb:6:in `each'
./features/step_definitions/view_calendar_steps.rb:6:in `/^I have an Event with the following attributes:$/'
features/view_calendar_detail.feature:8:in `Given I have an Event with the following attributes:'

view_calendar.feature

Feature: Viewing the Calendar

  So they can see upcoming events
  users
  should be able to view the details of events
  
  Scenario: Unauthenticated user views correct events
    Given I have an Event with the following attributes:
      |name       |description      |start_at           |end_at             |members_only |all_day  |event_category_id  |
      |Testing12  |Testing this out |2011/1/20 17:00    |2011/1/20 19:00    |true         |false    |1                  |
      |Testing123 |Testing this out |2011/1/23 17:00    |2011/1/23 19:00    |false        |false    |1                  |
    And I am not authenticated
    And I am on the Calendar page
    Then I should not see "Testing12"
    And I should see "Testing123"

view_calendar_steps.rb

Given /^I have an Event with the following attributes:$/ do |table|
  table.hashes.each do |attributes|
    Event.create!(attributes)
  end
end