60 lines
1.7 KiB
Ruby
60 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::ProcessMemoryCache::Helper, :use_clean_rails_memory_store_caching do
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let(:minimal_test_class) do
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Class.new do
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include Gitlab::ProcessMemoryCache::Helper
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def cached_content
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fetch_memory_cache(:cached_content_instance_key) { expensive_computation }
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end
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def clear_cached_content
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invalidate_memory_cache(:cached_content_instance_key)
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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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subject { MinimalTestClass.new }
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describe '.fetch_memory_cache' do
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it 'memoizes the result' do
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is_expected.to receive(:expensive_computation).once.and_return(1)
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2.times do
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expect(subject.cached_content).to eq(1)
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end
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end
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it 'resets the cache when the shared key is missing', :aggregate_failures do
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allow(Rails.cache).to receive(:read).with(:cached_content_instance_key).and_return(nil)
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is_expected.to receive(:expensive_computation).thrice.and_return(1, 2, 3)
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3.times do |index|
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expect(subject.cached_content).to eq(index + 1)
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end
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end
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it 'does not set the shared timestamp if it is already present', :redis do
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subject.clear_cached_content
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is_expected.to receive(:expensive_computation).once.and_return(1)
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expect { subject.cached_content }.not_to change { Rails.cache.read(:cached_content_instance_key) }
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end
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end
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describe '.invalidate_memory_cache' do
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it 'invalidates the cache' do
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is_expected.to receive(:expensive_computation).twice.and_return(1, 2)
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expect { subject.clear_cached_content }.to change { subject.cached_content }
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end
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end
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end
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