我很努力在Rails中測試更新方法。我正在使用標準內置測試框架(test::unit
)和Rails 3.0.8。我已經創建了一個用於測試的最小應用程序,但是我無法使其工作。這是我做的:如何在Rails中測試更新方法
我創建一個新的空白Rails應用程序:
rails new testapp
創建一個模式叫收藏:
rails generate model collection name:string
運行耙分貝:遷移:
rake db:migrate
使用更新方法創建一個名爲Collections的控制器:
rails generate controller collections update
在collection_controller.rb我添加此最小更新方法:
def update
@collection = Collection.find(params[:id])
@collection.update_attributes(params[:collection])
end
的測試夾具是默認值(collections.yml):
one:
name: MyString
two:
name: MyString
然後,添加這個到collection_controller_test。 rb下功能:
test "should update collection" do
put :update, :id => collections(:one), :collection => {:name => 'MyString2'}
assert_equal "MyString2", collections(:one).name
end
當我運行測試:
rake test:functionals
它失敗,此消息:
test_should_update_collection(CollectionsControllerTest) [/Users/atle/Documents/Rails/testapp/test/functional/collections_controller_test.rb:6]:
<"MyString2"> expected but was
<"MyString">.
下面是test.log中輸出:
[1m[36mSQL (0.2ms)[0m [1m SELECT name
FROM sqlite_master
WHERE type = 'table' AND NOT name = 'sqlite_sequence'
[0m
[1m[35mCollection Load (0.1ms)[0m SELECT "collections".* FROM "collections" WHERE "collections"."id" = 980190962 LIMIT 1
Processing by CollectionsController#update as HTML
Parameters: {"id"=>#<Collection id: 980190962, name: "MyString", created_at: "2011-06-12 13:14:13", updated_at: "2011-06-12 13:14:13">, "collection"=>{"name"=>"MyString2"}}
[1m[36mCollection Load (0.2ms)[0m [1mSELECT "collections".* FROM "collections" WHERE "collections"."id" = 980190962 LIMIT 1[0m
[1m[35mAREL (0.2ms)[0m UPDATE "collections" SET "name" = 'MyString2', "updated_at" = '2011-06-12 13:14:13.394135' WHERE "collections"."id" = 980190962
Rendered collections/update.html.erb within layouts/application (1.5ms)
Completed 200 OK in 9ms (Views: 4.5ms | ActiveRecord: 1.2ms)
在日誌中我可以看到UPDATE
聲明,但我從來沒有看到一個新的SELECT
聲明。
有人可以向我解釋我做錯了嗎?
對於一個明確提出的問題+1。很高興看到一位新用戶詢問這個詳細程度的明確問題。你的問題肯定來自你的斷言中的'collections(:one)',它只是從夾具中讀取數據,而不是數據庫。 Cameron和Teddy在下面都有這個正確答案。 (順便說一句:看看'factory_girl'和轉儲fixture完全儘快。他們很方便入門,但後來一個可怕的混亂。) – jdl 2011-06-12 14:20:19
所以夾具和數據庫是兩個不同的位置。我假設在啓動時將fixtures讀入數據庫,並且從db讀取集合(:one)。謝謝你清理的東西,我會看看factory_girl :) – Atle 2011-06-12 15:18:19