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Contents
# frozen_string_literal: true
require "test_helper"
class PreloaderBelongsToTest < ActiveSupport::TestCase
def test_preload_caches_includes
topics = [
Topic.create(title: "title1", body: "body1"),
Topic.create(title: "title2", body: "body2"),
Topic.create(title: "title3", body: "body3")
]
topics.each { |topic| topic.posts.create(body: "post#{topic.id}") }
results = nil
assert_queries(1) do
results = Post.includes(:topic).order("id ASC").to_a
end
assert_equal topics, results.map(&:topic)
end
def test_when_read_multi_missed_from_cache_ar_will_fetch_missed_records_from_db
topics = [
Topic.create(title: "title1", body: "body1"),
Topic.create(title: "title2", body: "body2"),
Topic.create(title: "title3", body: "body3")
]
topics.each { |topic| topic.posts.create(body: "post#{topic.id}") }
expired_topic = topics.first
expired_topic.expire_second_level_cache
results = nil
assert_queries(2) do
assert_sql(/WHERE\s\"topics\"\.\"id\"\s=\s?/m) do
results = Post.includes(:topic).order("id ASC").to_a
assert_equal expired_topic, results.first.topic
end
end
assert_equal topics, results.map(&:topic)
end
def test_preloader_caches_includes_tried_set_inverse_instance
user_id = Time.current.to_i
Account.create(site: "foobar", user_id: user_id)
User.create(id: user_id, name: "foobar", email: "foobar@test.com")
accounts = Account.includes(:user)
assert_equal accounts.first.object_id, accounts.first.user.account.object_id
end
def test_preloader_from_db_when_exists_scope
user = User.create
book = user.books.create
image = book.images.create
book.toggle!(:normal)
assert_queries(:any) do
assert_nil Image.includes(:imagable).where(id: image.id).first.imagable
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems