139 lines
3.9 KiB
Ruby
139 lines
3.9 KiB
Ruby
# frozen_string_literal: true
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require "spec_helper"
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RSpec.describe API::Helpers::Caching do
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subject(:instance) { Class.new.include(described_class).new }
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describe "#present_cached" do
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let_it_be(:project) { create(:project) }
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let_it_be(:user) { create(:user) }
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let(:presenter) { API::Entities::Todo }
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let(:kwargs) do
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{
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with: presenter,
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project: project
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}
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end
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subject do
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instance.present_cached(presentable, **kwargs)
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end
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before do
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# We have to stub #body as it's a Grape method
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# unavailable in the module by itself
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expect(instance).to receive(:body) do |data|
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data
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end
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allow(instance).to receive(:current_user) { user }
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end
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context "single object" do
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let_it_be(:presentable) { create(:todo, project: project) }
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it { is_expected.to be_a(Gitlab::Json::PrecompiledJson) }
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it "uses the presenter" do
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expect(presenter).to receive(:represent).with(presentable, project: project)
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subject
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end
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it "is valid JSON" do
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parsed = Gitlab::Json.parse(subject.to_s)
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expect(parsed).to be_a(Hash)
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expect(parsed["id"]).to eq(presentable.id)
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end
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it "fetches from the cache" do
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expect(instance.cache).to receive(:fetch).with("#{presentable.cache_key}:#{user.cache_key}", expires_in: described_class::DEFAULT_EXPIRY).once
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subject
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end
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context "when a cache context is supplied" do
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before do
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kwargs[:cache_context] = -> (todo) { todo.project.cache_key }
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end
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it "uses the context to augment the cache key" do
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expect(instance.cache).to receive(:fetch).with("#{presentable.cache_key}:#{project.cache_key}", expires_in: described_class::DEFAULT_EXPIRY).once
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subject
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end
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end
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context "when expires_in is supplied" do
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it "sets the expiry when accessing the cache" do
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kwargs[:expires_in] = 7.days
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expect(instance.cache).to receive(:fetch).with("#{presentable.cache_key}:#{user.cache_key}", expires_in: 7.days).once
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subject
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end
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end
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end
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context "for a collection of objects" do
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let_it_be(:presentable) { Array.new(5).map { create(:todo, project: project) } }
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it { is_expected.to be_an(Gitlab::Json::PrecompiledJson) }
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it "uses the presenter" do
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presentable.each do |todo|
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expect(presenter).to receive(:represent).with(todo, project: project)
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end
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subject
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end
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it "is valid JSON" do
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parsed = Gitlab::Json.parse(subject.to_s)
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expect(parsed).to be_an(Array)
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presentable.each_with_index do |todo, i|
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expect(parsed[i]["id"]).to eq(todo.id)
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end
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end
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it "fetches from the cache" do
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keys = presentable.map { |todo| "#{todo.cache_key}:#{user.cache_key}" }
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expect(instance.cache).to receive(:fetch_multi).with(*keys, expires_in: described_class::DEFAULT_EXPIRY).once.and_call_original
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subject
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end
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context "when a cache context is supplied" do
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before do
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kwargs[:cache_context] = -> (todo) { todo.project.cache_key }
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end
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it "uses the context to augment the cache key" do
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keys = presentable.map { |todo| "#{todo.cache_key}:#{project.cache_key}" }
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expect(instance.cache).to receive(:fetch_multi).with(*keys, expires_in: described_class::DEFAULT_EXPIRY).once.and_call_original
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subject
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end
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end
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context "expires_in is supplied" do
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it "sets the expiry when accessing the cache" do
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keys = presentable.map { |todo| "#{todo.cache_key}:#{user.cache_key}" }
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kwargs[:expires_in] = 7.days
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expect(instance.cache).to receive(:fetch_multi).with(*keys, expires_in: 7.days).once.and_call_original
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subject
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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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