debian-mirror-gitlab/spec/lib/gitlab/sherlock/middleware_spec.rb

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require 'spec_helper'
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describe Gitlab::Sherlock::Middleware, lib: true do
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let(:app) { double(:app) }
let(:middleware) { described_class.new(app) }
describe '#call' do
describe 'when instrumentation is enabled' do
it 'instruments a request' do
allow(middleware).to receive(:instrument?).and_return(true)
allow(middleware).to receive(:call_with_instrumentation)
middleware.call({})
end
end
describe 'when instrumentation is disabled' do
it "doesn't instrument a request" do
allow(middleware).to receive(:instrument).and_return(false)
allow(app).to receive(:call)
middleware.call({})
end
end
end
describe '#call_with_instrumentation' do
it 'instruments a request' do
trans = double(:transaction)
retval = 'cats are amazing'
env = {}
allow(app).to receive(:call).with(env).and_return(retval)
allow(middleware).to receive(:transaction_from_env).and_return(trans)
allow(trans).to receive(:run).and_yield.and_return(retval)
allow(Gitlab::Sherlock.collection).to receive(:add).with(trans)
middleware.call_with_instrumentation(env)
end
end
describe '#instrument?' do
it 'returns false for a text/css request' do
env = { 'HTTP_ACCEPT' => 'text/css', 'REQUEST_URI' => '/' }
expect(middleware.instrument?(env)).to eq(false)
end
it 'returns false for a request to a Sherlock route' do
env = {
'HTTP_ACCEPT' => 'text/html',
'REQUEST_URI' => '/sherlock/transactions'
}
expect(middleware.instrument?(env)).to eq(false)
end
it 'returns true for a request that should be instrumented' do
env = {
'HTTP_ACCEPT' => 'text/html',
'REQUEST_URI' => '/cats'
}
expect(middleware.instrument?(env)).to eq(true)
end
end
describe '#transaction_from_env' do
it 'returns a Transaction' do
env = {
'HTTP_ACCEPT' => 'text/html',
'REQUEST_URI' => '/cats'
}
expect(middleware.transaction_from_env(env)).
to be_an_instance_of(Gitlab::Sherlock::Transaction)
end
end
end