gitlab-org--gitlab-foss/spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb
Pawel Chojnacki 2d0741e562 Rename ConnectionRackMiddleware to RequestsRackMiddleware.
+ fix tests after metrics rename
2017-07-13 00:46:17 +02:00

71 lines
2.1 KiB
Ruby

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