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|
# frozen_string_literal: true
require 'spec_helper'
describe Gitlab::RepositoryCache do
let(:backend) { double('backend').as_null_object }
let(:project) { create(:project) }
let(:repository) { project.repository }
let(:namespace) { "#{repository.full_path}:#{project.id}" }
let(:cache) { described_class.new(repository, backend: backend) }
describe '#cache_key' do
subject { cache.cache_key(:foo) }
it 'includes the namespace' do
expect(subject).to eq "foo:#{namespace}"
end
context 'with a given namespace' do
let(:extra_namespace) { 'my:data' }
let(:cache) do
described_class.new(repository, extra_namespace: extra_namespace,
backend: backend)
end
it 'includes the full namespace' do
expect(subject).to eq "foo:#{namespace}:#{extra_namespace}"
end
end
end
describe '#expire' do
it 'expires the given key from the cache' do
cache.expire(:foo)
expect(backend).to have_received(:delete).with("foo:#{namespace}")
end
end
describe '#fetch' do
it 'fetches the given key from the cache' do
cache.fetch(:bar)
expect(backend).to have_received(:fetch).with("bar:#{namespace}")
end
it 'accepts a block' do
p = -> {}
cache.fetch(:baz, &p)
expect(backend).to have_received(:fetch).with("baz:#{namespace}", &p)
end
end
describe '#fetch_without_caching_false', :use_clean_rails_memory_store_caching do
let(:key) { :foo }
let(:backend) { Rails.cache }
it 'requires a block' do
expect do
cache.fetch_without_caching_false(key)
end.to raise_error(LocalJumpError)
end
context 'when the key does not exist in the cache' do
context 'when the result of the block is truthy' do
it 'returns the result of the block' do
result = cache.fetch_without_caching_false(key) { true }
expect(result).to be true
end
it 'caches the value' do
expect(backend).to receive(:write).with("#{key}:#{namespace}", true)
cache.fetch_without_caching_false(key) { true }
end
end
context 'when the result of the block is falsey' do
let(:p) { -> { false } }
it 'returns the result of the block' do
result = cache.fetch_without_caching_false(key, &p)
expect(result).to be false
end
it 'does not cache the value' do
expect(backend).not_to receive(:write).with("#{key}:#{namespace}", true)
cache.fetch_without_caching_false(key, &p)
end
end
end
context 'when the cached value is truthy' do
before do
backend.write("#{key}:#{namespace}", true)
end
it 'returns the cached value' do
result = cache.fetch_without_caching_false(key) { 'block result' }
expect(result).to be true
end
it 'does not execute the block' do
expect do |b|
cache.fetch_without_caching_false(key, &b)
end.not_to yield_control
end
it 'does not write to the cache' do
expect(backend).not_to receive(:write)
cache.fetch_without_caching_false(key) { 'block result' }
end
end
context 'when the cached value is falsey' do
before do
backend.write("#{key}:#{namespace}", false)
end
it 'returns the result of the block' do
result = cache.fetch_without_caching_false(key) { 'block result' }
expect(result).to eq 'block result'
end
it 'writes the truthy value to the cache' do
expect(backend).to receive(:write).with("#{key}:#{namespace}", 'block result')
cache.fetch_without_caching_false(key) { 'block result' }
end
end
end
end
|
