我正在測試與Rspec一個名爲解決方案,它有很多喜歡的模型。解決方案存儲多少喜歡(counter_cache)。它有一個「likes_count」屬性(和相應的db字段)。Rails 3和Rspec:計數器緩存列正在更新到2預期1
當我創建一個與解決方案關聯的Like記錄時,我期望解決方案屬性「likes_count」應該從零更新爲1.當我在控制檯中這樣做時,它可以工作。
但是當我運行規範,做同樣的事情我在控制檯做,它更新兩次「likes_count」字段,將其設置爲2
看看(控制檯)WORKING:
irb(main):001:0> solution = Factory(:solution)
irb(main):004:0> solution.likes_count
=> nil
irb(main):006:0> like = Factory(:like, :likeable => solution)
=> #<Like id: 1, user_id: 2, likeable_id: 1, likeable_type: "Solution",
created_at: "2011-11-23 19:31:23", updated_at: "2011-11-23 19:31:23">
irb(main):007:0> solution.reload.likes_count
=> 1
看一看規範結果不工作:
1) Solution counter cache should be increased when a like is created
Failure/Error: subject.reload.likes_count.should be 1
expected #<Fixnum:3> => 1
got #<Fixnum:5> => 2
Compared using equal?, which compares object identity,
but expected and actual are not the same object. Use
'actual.should == expected' if you don't care about
object identity in this example.
# ./spec/models/solution_spec.rb:45:in `block (3 levels) in <top (required)>'
這裏是在S佩奇:
describe "counter cache" do
let(:solution) { Factory(:solution) }
it "should be increased when a like is created" do
Factory(:like, :likeable => solution)
solution.reload.likes_count.should be 1
end
end
我看了看test.log中,我意識到,更新該計數器緩存列的數據庫查詢在測試中調用兩次。
SQL (0.5ms) INSERT INTO "likes" ("created_at", "likeable_id", "likeable_type", "updated_at", "user_id") VALUES (?, ?, ?, ?, ?) [["created_at", Wed, 23 Nov 2011 19:38:31 UTC +00:00], ["likeable_id", 121], ["likeable_type", "Solution"], ["updated_at", Wed, 23 Nov 2011 19:38:31 UTC +00:00], ["user_id", 204]]
SQL (0.3ms) UPDATE "solutions" SET "likes_count" = COALESCE("likes_count", 0) + 1 WHERE "solutions"."id" IN (SELECT "solutions"."id" FROM "solutions" WHERE "solutions"."id" = 121 ORDER BY id DESC)
SQL (0.1ms) UPDATE "solutions" SET "likes_count" = COALESCE("likes_count", 0) + 1 WHERE "solutions"."id" IN (SELECT "solutions"."id" FROM "solutions" WHERE "solutions"."id" = 121 ORDER BY id DESC)
Solution Load (0.3ms) SELECT "solutions".* FROM "solutions" WHERE "solutions"."id" = ? LIMIT 1 [["id", 121]]
是的,這是問題所在。非常感謝,jkronz! 這段代碼導致Spork.each_run塊上的問題: 'Dir [「#{Rails.root}/app/**/*。rb」]。{| f |加載f}' –
我有這個相同的問題,但我找不到它加載兩次。有關如何調試的建議?我正在使用rails 4.1。謝謝。 –