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每天一劑Rails良藥之Creating Dynamic Test Fixtures

2010-01-14 07:08:35 作者: 來源:

Rails的fixture文件在傳遞給YAML解析之前先用ERB解析，這樣一來我們就可以使用Ruby代碼動態生成測試數據，而不用一條數據一條數據的寫了:

Java代碼

<% 1.upto(50) do |number| %>
child_post_<%= number %>:
id: <%= number + 3 %>
title: This is auto-generated reply number <%= number %>
body: We're on number <%= number %>
created_at: 2006-01-30 08:03:56
updated_at: 2006-01-30 08:03:56
<%# Randomly choose a parent from a post we've already generated -%>
parent_id: <%= rand(number - 1) + 1 %>
user_id: <%= rand(5) + 1 %>
<% end %>

<% 1.upto(50) do |number| %>
child_post_<%= number %>:
  id: <%= number + 3 %>
  title: This is auto-generated reply number <%= number %>
  body: We're on number <%= number %>
  created_at: 2006-01-30 08:03:56
  updated_at: 2006-01-30 08:03:56
  <%# Randomly choose a parent from a post we've already generated -%>
  parent_id: <%= rand(number - 1) + 1 %>
  user_id: <%= rand(5) + 1 %>
<% end %>

我們還可以定義一些helper方法:

Java代碼

<%
def today
Time.now.to_s(:db)
end
def next_week
1.week.from_now.to_s(:db)
end
def last_week
1.week.ago.to_s(:db)
end
post_from_last_week:
id: 60
title: pizza
body: Last night I had pizza. I readlly liked that story from AWDWR.
created_at: <%= last_week %>
updated_at: <%= last_week %>
user_id: 1
post_created_in_future_should_not_display:
id: 61
title: Prognostication
body: I predict that this post will show up next week.
created_at: <%= next_week %>
updated_at: <%= next_week %>
updated_post_displays_based_on_updated_time:
id: 62
title: This should show up as posted today.
body: blah blah blah
created_at: <%= last_week %>
updated_at: <%= today %>
user_id: 2

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