diff options
Diffstat (limited to 'spec/support/shared_examples/services/groups_count_service_shared_examples.rb')
-rw-r--r-- | spec/support/shared_examples/services/groups_count_service_shared_examples.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/spec/support/shared_examples/services/groups_count_service_shared_examples.rb b/spec/support/shared_examples/services/groups_count_service_shared_examples.rb new file mode 100644 index 00000000000..84937c3d4d7 --- /dev/null +++ b/spec/support/shared_examples/services/groups_count_service_shared_examples.rb @@ -0,0 +1,55 @@ +# frozen_string_literal: true + +# The calling spec should use `:use_clean_rails_memory_store_caching` +# when including this shared example. E.g.: +# +# describe MyCountService, :use_clean_rails_memory_store_caching do +# it_behaves_like 'a counter caching service with threshold' +# end +RSpec.shared_examples 'a counter caching service with threshold' do + let(:cache_key) { subject.cache_key } + let(:under_threshold) { described_class::CACHED_COUNT_THRESHOLD - 1 } + let(:over_threshold) { described_class::CACHED_COUNT_THRESHOLD + 1 } + + context 'when cache is empty' do + before do + Rails.cache.delete(cache_key) + end + + it 'refreshes cache if value over threshold' do + allow(subject).to receive(:uncached_count).and_return(over_threshold) + + expect(subject.count).to eq(over_threshold) + expect(Rails.cache.read(cache_key)).to eq(over_threshold) + end + + it 'does not refresh cache if value under threshold' do + allow(subject).to receive(:uncached_count).and_return(under_threshold) + + expect(subject.count).to eq(under_threshold) + expect(Rails.cache.read(cache_key)).to be_nil + end + end + + context 'when cached count is under the threshold value' do + before do + Rails.cache.write(cache_key, under_threshold) + end + + it 'does not refresh cache' do + expect(Rails.cache).not_to receive(:write) + expect(subject.count).to eq(under_threshold) + end + end + + context 'when cached count is over the threshold value' do + before do + Rails.cache.write(cache_key, over_threshold) + end + + it 'does not refresh cache' do + expect(Rails.cache).not_to receive(:write) + expect(subject.count).to eq(over_threshold) + end + end +end |