導軌安裝式發動機內測試夾具中的關聯

Question

在我的新式可安裝引擎的單元測試期間，我遇到了一個問題。

我有兩種基本模式：

module Ads 
    class Category < ActiveRecord::Base 
    set_table_name :categories 
    has_many :ads 
    end 
end 

module Ads 
    class Ad < ActiveRecord::Base 
    set_table_name :ads 
    belongs_to :category 
    end 
end 

它可以在鐵軌控制檯完美的罰款。

ruby-1.9.2-p290 :007 > c = Ads::Category.create(title: 'foo') 
(0.4ms) BEGIN 
SQL (1.0ms) INSERT INTO "categories" ("created_at", "title", "updated_at") VALUES ($1, $2, $3) RETURNING "id" [["created_at", Tue, 22 Nov 2011 15:34:41 UTC +00:00], ["title", "foo"], ["updated_at", Tue, 22 Nov 2011 15:34:41 UTC +00:00]] 
(18.0ms) COMMIT 
=> #<Ads::Category id: 2, title: "foo", created_at: "2011-11-22 15:34:41", updated_at: "2011-11-22 15:34:41"> 
ruby-1.9.2-p290 :008 > c.ads.create(title: 'bar') 
(0.6ms) BEGIN 
SQL (1.1ms) INSERT INTO "ads" ("category_id", "created_at", "title", "updated_at") VALUES ($1, $2, $3, $4) RETURNING "id" [["category_id", 2], ["created_at", Tue, 22 Nov 2011 15:34:43 UTC +00:00], ["title", "bar"], ["updated_at", Tue, 22 Nov 2011 15:34:43 UTC +00:00]] 
(16.8ms) COMMIT 
=> #<Ads::Ad id: 2, title: "bar", category_id: 2, created_at: "2011-11-22 15:34:43", updated_at: "2011-11-22 15:34:43"> 

我轉移到一個單元測試：填充測試分貝期間

rake app:test:units 

它以錯誤結束：

# test/unit/ads/category_test.rb 
require 'test_helper' 

module Ads 
    class CategoryTest < ActiveSupport::TestCase 
    # by default it searches in dummy app, is there any cleaner way to change this? 
    self.fixture_path = Rails.root.parent + "./fixtures/ads" 
    fixtures :categories, :ads 

    test "should find cars" do 
     assert_equal 1, Category.where(title: 'Cars').count 
    end 
    end 
end 

# test/fixtures/ads/categories.yml 
cars: 
    title: Cars 

# test/fixtures/ads/ads.yml 
foo: 
    title: Foo 
    category: cars 

當運行單元測試

ActiveRecord::StatementInvalid: PGError: ERROR: column "category" of relation "ads" does not exist 
LINE 1: INSERT INTO "ads" ("title", "category") VALUES ('Foo', 'cars... 

看起來像廣告< - > c ategories協會「被忽略。 在獨立的rails應用程序中，相同的方法可以完美地工作。 我的問題是：我做錯了什麼？ 側面的問題是，如果有一個更清潔的解決方案來改變燈具路徑？

Rails：3.1.3

Answer 1

我有完全相同的問題，但有一個Rails 3.0引擎。我無法正確地修復它，但作爲一項解決方案，我做到了這一點。

相反的：

category: cars 

務必：

category_id: <%= Fixtures.identify(:cars) %> 

這工作，因爲ID實際上是標籤的哈希值。 Fixtures.identify是什麼哈希。