62 lines
2.1 KiB
Ruby
62 lines
2.1 KiB
Ruby
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# frozen_string_literal: true
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require 'spec_helper'
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describe Gitlab::Metrics::RedisRackMiddleware do
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let(:app) { double(:app) }
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let(:middleware) { described_class.new(app) }
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let(:env) { {} }
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let(:transaction) { Gitlab::Metrics::WebTransaction.new(env) }
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before do
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allow(app).to receive(:call).with(env).and_return('wub wub')
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end
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describe '#call' do
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let(:counter) { double(Prometheus::Client::Counter, increment: nil) }
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let(:histogram) { double(Prometheus::Client::Histogram, observe: nil) }
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let(:redis_query_time) { 0.1 }
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let(:redis_requests_count) { 2 }
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before do
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allow(Gitlab::Instrumentation::Redis).to receive(:query_time) { redis_query_time }
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allow(Gitlab::Instrumentation::Redis).to receive(:get_request_count) { redis_requests_count }
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allow(Gitlab::Metrics).to receive(:counter)
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.with(:http_redis_requests_total,
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an_instance_of(String),
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Gitlab::Metrics::Transaction::BASE_LABELS)
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.and_return(counter)
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allow(Gitlab::Metrics).to receive(:histogram)
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.with(:http_redis_requests_duration_seconds,
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an_instance_of(String),
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Gitlab::Metrics::Transaction::BASE_LABELS,
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Gitlab::Instrumentation::Redis::QUERY_TIME_BUCKETS)
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.and_return(histogram)
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allow(Gitlab::Metrics).to receive(:current_transaction).and_return(transaction)
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end
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it 'calls the app' do
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expect(middleware.call(env)).to eq('wub wub')
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end
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it 'records redis metrics' do
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expect(counter).to receive(:increment).with(transaction.labels, redis_requests_count)
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expect(histogram).to receive(:observe).with(transaction.labels, redis_query_time)
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middleware.call(env)
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end
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it 'records redis metrics if an error is raised' do
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expect(counter).to receive(:increment).with(transaction.labels, redis_requests_count)
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expect(histogram).to receive(:observe).with(transaction.labels, redis_query_time)
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allow(app).to receive(:call).with(env).and_raise(StandardError)
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expect { middleware.call(env) }.to raise_error(StandardError)
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end
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end
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end
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