258 lines
7.4 KiB
Ruby
258 lines
7.4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe CacheableAttributes do
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let(:minimal_test_class) do
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Class.new do
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include ActiveModel::Model
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extend ActiveModel::Callbacks
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include ActiveModel::AttributeMethods
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define_model_callbacks :commit
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include CacheableAttributes
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def self.name
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'TestClass'
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end
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def self.first
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@_first ||= new('foo' => 'a')
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end
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def self.last
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@_last ||= new('foo' => 'a', 'bar' => 'b')
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end
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def self.column_names
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%w[foo bar baz]
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end
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attr_accessor :attributes
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def initialize(attrs = {}, *)
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@attributes = attrs
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end
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end
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end
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before do
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stub_const("MinimalTestClass", minimal_test_class)
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end
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shared_context 'with defaults' do
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before do
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MinimalTestClass.define_singleton_method(:defaults) do
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{ foo: 'a', bar: 'b', baz: 'c' }
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end
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end
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end
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describe '.expire', :use_clean_rails_memory_store_caching, :request_store do
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it 'wipes the cache' do
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obj = MinimalTestClass.new
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obj.cache!
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expect(MinimalTestClass.cached).not_to eq(nil)
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MinimalTestClass.expire
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expect(MinimalTestClass.cached).to eq(nil)
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end
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end
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describe '.current_without_cache' do
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it 'defaults to last' do
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expect(MinimalTestClass.current_without_cache).to eq(MinimalTestClass.last)
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end
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it 'can be overridden' do
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MinimalTestClass.define_singleton_method(:current_without_cache) do
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first
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end
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expect(MinimalTestClass.current_without_cache).to eq(MinimalTestClass.first)
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end
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end
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describe '.cache_key' do
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it 'excludes cache attributes' do
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expect(MinimalTestClass.cache_key).to eq("TestClass:#{Gitlab::VERSION}:#{Rails.version}")
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end
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end
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describe '.defaults' do
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it 'defaults to {}' do
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expect(MinimalTestClass.defaults).to eq({})
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end
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context 'with defaults defined' do
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include_context 'with defaults'
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it 'can be overridden' do
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expect(MinimalTestClass.defaults).to eq({ foo: 'a', bar: 'b', baz: 'c' })
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end
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end
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end
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describe '.build_from_defaults' do
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include_context 'with defaults'
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context 'without any attributes given' do
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it 'intializes a new object with the defaults' do
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expect(MinimalTestClass.build_from_defaults.attributes).to eq(MinimalTestClass.defaults.stringify_keys)
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end
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end
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context 'with attributes given' do
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it 'intializes a new object with the given attributes merged into the defaults' do
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expect(MinimalTestClass.build_from_defaults(foo: 'd').attributes['foo']).to eq('d')
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end
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end
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describe 'edge cases on concrete implementations' do
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describe '.build_from_defaults' do
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context 'without any attributes given' do
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it 'intializes all attributes even if they are nil' do
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record = ApplicationSetting.build_from_defaults
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expect(record).not_to be_persisted
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expect(record.sign_in_text).to be_nil
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end
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end
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end
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end
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end
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describe '.current', :use_clean_rails_memory_store_caching do
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context 'redis unavailable' do
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before do
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allow(MinimalTestClass).to receive(:last).and_return(:last)
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expect(Rails.cache).to receive(:read).with(MinimalTestClass.cache_key).and_raise(Redis::BaseError)
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end
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context 'in production environment' do
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before do
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expect(Rails.env).to receive(:production?).and_return(true)
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end
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it 'returns an uncached record and logs a warning' do
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expect(Rails.logger).to receive(:warn).with("Cached record for TestClass couldn't be loaded, falling back to uncached record: Redis::BaseError")
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expect(MinimalTestClass.current).to eq(:last)
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end
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end
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context 'in other environments' do
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before do
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expect(Rails.env).to receive(:production?).and_return(false)
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end
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it 'returns an uncached record and logs a warning' do
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expect(Rails.logger).not_to receive(:warn)
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expect { MinimalTestClass.current }.to raise_error(Redis::BaseError)
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end
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end
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end
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context 'when a record is not yet present' do
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it 'does not cache nil object' do
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# when missing settings a nil object is returned, but not cached
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allow(ApplicationSetting).to receive(:current_without_cache).twice.and_return(nil)
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expect(ApplicationSetting.current).to be_nil
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expect(ApplicationSetting.cache_backend.exist?(ApplicationSetting.cache_key)).to be(false)
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end
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it 'caches non-nil object' do
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create(:application_setting)
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expect(ApplicationSetting.current).to eq(ApplicationSetting.last)
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expect(ApplicationSetting.cache_backend.exist?(ApplicationSetting.cache_key)).to be(true)
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# subsequent calls retrieve the record from the cache
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last_record = ApplicationSetting.last
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expect(ApplicationSetting).not_to receive(:current_without_cache)
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expect(ApplicationSetting.current.attributes).to eq(last_record.attributes)
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end
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end
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describe 'edge cases' do
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describe 'caching behavior', :use_clean_rails_memory_store_caching do
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before do
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stub_commonmark_sourcepos_disabled
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end
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it 'retrieves upload fields properly' do
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ar_record = create(:appearance, :with_logo)
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ar_record.cache!
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cache_record = Appearance.current
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expect(cache_record).to be_persisted
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expect(cache_record.logo).to be_an(AttachmentUploader)
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expect(cache_record.logo.url).to end_with('/dk.png')
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end
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it 'retrieves markdown fields properly' do
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ar_record = create(:appearance, description: '**Hello**')
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ar_record.cache!
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cache_record = Appearance.current
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expect(cache_record.description).to eq('**Hello**')
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expect(cache_record.description_html).to eq('<p dir="auto"><strong>Hello</strong></p>')
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end
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end
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end
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it 'uses RequestStore in addition to Thread memory cache', :request_store do
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# Warm up the cache
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create(:application_setting).cache!
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expect(ApplicationSetting.cache_backend).to eq(Gitlab::ThreadMemoryCache.cache_backend)
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expect(ApplicationSetting.cache_backend).to receive(:read).with(ApplicationSetting.cache_key).once.and_call_original
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2.times { ApplicationSetting.current }
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end
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end
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describe '.cached', :use_clean_rails_memory_store_caching do
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context 'when cache is cold' do
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it 'returns nil' do
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expect(MinimalTestClass.cached).to be_nil
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end
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end
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context 'when cached is warm' do
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before do
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# Warm up the cache
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create(:appearance).cache!
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end
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it 'retrieves the record from cache' do
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expect(ActiveRecord::QueryRecorder.new { Appearance.cached }.count).to eq(0)
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expect(Appearance.cached).to eq(Appearance.current_without_cache)
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end
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end
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end
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describe '#cache!', :use_clean_rails_memory_store_caching do
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let(:record) { create(:appearance) }
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it 'caches the attributes' do
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record.cache!
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expect(Rails.cache.read(Appearance.cache_key)).to eq(record)
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end
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describe 'edge cases' do
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let(:record) { create(:appearance) }
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it 'caches the attributes' do
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record.cache!
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expect(Rails.cache.read(Appearance.cache_key)).to eq(record)
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end
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end
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end
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end
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