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# frozen_string_literal: true
require 'spec_helper'
describe Gitlab::Metrics::RackMiddleware do
let(:app) { double(:app) }
let(:middleware) { described_class.new(app) }
let(:env) { { 'REQUEST_METHOD' => 'GET', 'REQUEST_URI' => '/foo' } }
describe '#call' do
it 'tracks a transaction' do
expect(app).to receive(:call).with(env).and_return('yay')
expect(middleware.call(env)).to eq('yay')
end
it 'tracks any raised exceptions' do
expect(app).to receive(:call).with(env).and_raise(RuntimeError)
expect_any_instance_of(Gitlab::Metrics::Transaction)
.to receive(:add_event).with(:rails_exception)
expect { middleware.call(env) }.to raise_error(RuntimeError)
end
end
describe '#transaction_from_env' do
let(:transaction) { middleware.transaction_from_env(env) }
it 'returns a Transaction' do
expect(transaction).to be_an_instance_of(Gitlab::Metrics::WebTransaction)
end
end
end
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