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require "cases/helper"
require "models/topic"
require "models/car"
require "models/aircraft"
require "models/wheel"
require "models/engine"
require "models/reply"
require "models/category"
require "models/categorization"
require "models/dog"
require "models/dog_lover"
require "models/person"
require "models/friendship"
require "models/subscriber"
require "models/subscription"
require "models/book"
class CounterCacheTest < ActiveRecord::TestCase
fixtures :topics, :categories, :categorizations, :cars, :dogs, :dog_lovers, :people, :friendships, :subscribers, :subscriptions, :books
class ::SpecialTopic < ::Topic
has_many :special_replies, foreign_key: "parent_id"
has_many :lightweight_special_replies, -> { select("topics.id, topics.title") }, foreign_key: "parent_id", class_name: "SpecialReply"
end
class ::SpecialReply < ::Reply
belongs_to :special_topic, foreign_key: "parent_id", counter_cache: "replies_count"
end
setup do
@topic = Topic.find(1)
end
test "increment counter" do
assert_difference "@topic.reload.replies_count" do
Topic.increment_counter(:replies_count, @topic.id)
end
end
test "decrement counter" do
assert_difference "@topic.reload.replies_count", -1 do
Topic.decrement_counter(:replies_count, @topic.id)
end
end
test "reset counters" do
# throw the count off by 1
Topic.increment_counter(:replies_count, @topic.id)
# check that it gets reset
assert_difference "@topic.reload.replies_count", -1 do
Topic.reset_counters(@topic.id, :replies)
end
end
test "reset counters by counter name" do
# throw the count off by 1
Topic.increment_counter(:replies_count, @topic.id)
# check that it gets reset
assert_difference "@topic.reload.replies_count", -1 do
Topic.reset_counters(@topic.id, :replies_count)
end
end
test "reset multiple counters" do
Topic.update_counters @topic.id, replies_count: 1, unique_replies_count: 1
assert_difference ["@topic.reload.replies_count", "@topic.reload.unique_replies_count"], -1 do
Topic.reset_counters(@topic.id, :replies, :unique_replies)
end
end
test "reset counters with string argument" do
Topic.increment_counter("replies_count", @topic.id)
assert_difference "@topic.reload.replies_count", -1 do
Topic.reset_counters(@topic.id, "replies")
end
end
test "reset counters with modularized and camelized classnames" do
special = SpecialTopic.create!(title: "Special")
SpecialTopic.increment_counter(:replies_count, special.id)
assert_difference "special.reload.replies_count", -1 do
SpecialTopic.reset_counters(special.id, :special_replies)
end
end
test "reset counter with belongs_to which has class_name" do
car = cars(:honda)
assert_nothing_raised do
Car.reset_counters(car.id, :engines)
end
assert_nothing_raised do
Car.reset_counters(car.id, :wheels)
end
end
test "reset the right counter if two have the same class_name" do
david = dog_lovers(:david)
DogLover.increment_counter(:bred_dogs_count, david.id)
DogLover.increment_counter(:trained_dogs_count, david.id)
assert_difference "david.reload.bred_dogs_count", -1 do
DogLover.reset_counters(david.id, :bred_dogs)
end
assert_difference "david.reload.trained_dogs_count", -1 do
DogLover.reset_counters(david.id, :trained_dogs)
end
end
test "update counter with initial null value" do
category = categories(:general)
assert_equal 2, category.categorizations.count
assert_nil category.categorizations_count
Category.update_counters(category.id, categorizations_count: category.categorizations.count)
assert_equal 2, category.reload.categorizations_count
end
test "update counter for decrement" do
assert_difference "@topic.reload.replies_count", -3 do
Topic.update_counters(@topic.id, replies_count: -3)
end
end
test "update counters of multiple records" do
t1, t2 = topics(:first, :second)
assert_difference ["t1.reload.replies_count", "t2.reload.replies_count"], 2 do
Topic.update_counters([t1.id, t2.id], replies_count: 2)
end
end
test "update multiple counters" do
assert_difference ["@topic.reload.replies_count", "@topic.reload.unique_replies_count"], 2 do
Topic.update_counters @topic.id, replies_count: 2, unique_replies_count: 2
end
end
test "update other counters on parent destroy" do
david, joanna = dog_lovers(:david, :joanna)
joanna = joanna # squelch a warning
assert_difference "joanna.reload.dogs_count", -1 do
david.destroy
end
end
test "reset the right counter if two have the same foreign key" do
michael = people(:michael)
assert_nothing_raised do
Person.reset_counters(michael.id, :friends_too)
end
end
test "reset counter of has_many :through association" do
subscriber = subscribers("second")
Subscriber.reset_counters(subscriber.id, "books")
Subscriber.increment_counter("books_count", subscriber.id)
assert_difference "subscriber.reload.books_count", -1 do
Subscriber.reset_counters(subscriber.id, "books")
end
end
test "the passed symbol needs to be an association name or counter name" do
e = assert_raises(ArgumentError) do
Topic.reset_counters(@topic.id, :undefined_count)
end
assert_equal "'Topic' has no association called 'undefined_count'", e.message
end
test "reset counter works with select declared on association" do
special = SpecialTopic.create!(title: "Special")
SpecialTopic.increment_counter(:replies_count, special.id)
assert_difference "special.reload.replies_count", -1 do
SpecialTopic.reset_counters(special.id, :lightweight_special_replies)
end
end
test "counters are updated both in memory and in the database on create" do
car = Car.new(engines_count: 0)
car.engines = [Engine.new, Engine.new]
car.save!
assert_equal 2, car.engines_count
assert_equal 2, car.reload.engines_count
end
test "counter caches are updated in memory when the default value is nil" do
car = Car.new(engines_count: nil)
car.engines = [Engine.new, Engine.new]
car.save!
assert_equal 2, car.engines_count
assert_equal 2, car.reload.engines_count
end
test "update counters in a polymorphic relationship" do
aircraft = Aircraft.create!
assert_difference "aircraft.reload.wheels_count" do
aircraft.wheels << Wheel.create!
end
assert_difference "aircraft.reload.wheels_count", -1 do
aircraft.wheels.first.destroy
end
end
end
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