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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe ApplicationExperiment::Cache do
let(:key_name) { 'experiment_name' }
let(:field_name) { 'abc123' }
let(:key_field) { [key_name, field_name].join(':') }
let(:shared_state) { Gitlab::Redis::SharedState }
around do |example|
shared_state.with { |r| r.del(key_name) }
example.run
shared_state.with { |r| r.del(key_name) }
end
it "allows reading, writing and deleting", :aggregate_failures do
# we test them all together because they are largely interdependent
expect(subject.read(key_field)).to be_nil
expect(shared_state.with { |r| r.hget(key_name, field_name) }).to be_nil
subject.write(key_field, 'value')
expect(subject.read(key_field)).to eq('value')
expect(shared_state.with { |r| r.hget(key_name, field_name) }).to eq('value')
subject.delete(key_field)
expect(subject.read(key_field)).to be_nil
expect(shared_state.with { |r| r.hget(key_name, field_name) }).to be_nil
end
it "handles the fetch with a block behavior (which is read/write)" do
expect(subject.fetch(key_field) { 'value1' }).to eq('value1') # rubocop:disable Style/RedundantFetchBlock
expect(subject.fetch(key_field) { 'value2' }).to eq('value1') # rubocop:disable Style/RedundantFetchBlock
end
it "can clear a whole experiment cache key" do
subject.write(key_field, 'value')
subject.clear(key: key_field)
expect(shared_state.with { |r| r.get(key_name) }).to be_nil
end
it "doesn't allow clearing a key from the cache that's not a hash (definitely not an experiment)" do
shared_state.with { |r| r.set(key_name, 'value') }
expect { subject.clear(key: key_name) }.to raise_error(
ArgumentError,
'invalid call to clear a non-hash cache key'
)
end
context "when the :caching_experiments feature is disabled" do
before do
stub_feature_flags(caching_experiments: false)
end
it "doesn't write to the cache" do
subject.write(key_field, 'value')
expect(subject.read(key_field)).to be_nil
end
end
end
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