72 lines
2.1 KiB
Ruby
72 lines
2.1 KiB
Ruby
require 'spec_helper'
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describe Gitlab::Metrics::RequestsRackMiddleware do
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let(:app) { double('app') }
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subject { described_class.new(app) }
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around do |example|
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Timecop.freeze { example.run }
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end
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describe '#call' do
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let(:status) { 100 }
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let(:env) { { 'REQUEST_METHOD' => 'GET' } }
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let(:stack_result) { [status, {}, 'body'] }
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before do
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allow(app).to receive(:call).and_return(stack_result)
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end
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context '@app.call succeeds with 200' do
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before do
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allow(app).to receive(:call).and_return([200, nil, nil])
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end
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it 'increments requests count' do
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expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get')
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subject.call(env)
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end
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it 'measures execution time' do
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execution_time = 10
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allow(app).to receive(:call) do |*args|
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Timecop.freeze(execution_time.seconds)
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[200, nil, nil]
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end
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expect(described_class).to receive_message_chain(:http_request_duration_seconds, :observe).with({ status: 200, method: 'get' }, execution_time)
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subject.call(env)
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end
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end
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context '@app.call throws exception' do
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let(:http_request_duration_seconds) { double('http_request_duration_seconds') }
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before do
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allow(app).to receive(:call).and_raise(StandardError)
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allow(described_class).to receive(:http_request_duration_seconds).and_return(http_request_duration_seconds)
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end
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it 'increments exceptions count' do
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expect(described_class).to receive_message_chain(:rack_uncaught_errors_count, :increment)
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expect { subject.call(env) }.to raise_error(StandardError)
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end
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it 'increments requests count' do
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expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get')
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expect { subject.call(env) }.to raise_error(StandardError)
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end
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it "does't measure request execution time" do
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expect(described_class.http_request_duration_seconds).not_to receive(:increment)
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expect { subject.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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end
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