content: -- This file is part of the Wire Server implementation.
  --
  -- Copyright (C) 2022 Wire Swiss GmbH <opensource@wire.com>
  --
  -- This program is free software: you can redistribute it and/or modify it under
  -- the terms of the GNU Affero General Public License as published by the Free
  -- Software Foundation, either version 3 of the License, or (at your option) any
  -- later version.
  --
  -- This program is distributed in the hope that it will be useful, but WITHOUT
  -- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  -- FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
  -- details.
  --
  -- You should have received a copy of the GNU Affero General Public License along
  -- with this program. If not, see <https://www.gnu.org/licenses/>.
  
  module Metrics where
  
  import Bilge
  import Bilge.Assert
  import Control.Lens (view)
  import Imports
  import Test.Tasty
  import TestSetup
  
  type TestSignature a = GundeckR -> Http a
  
  tests :: IO TestSetup -> TestTree
  tests s =
    testGroup
      "Metrics"
      [ test s "prometheus gundeck" testPrometheusMetricsGundeck,
        test s "prometheus cannon" testPrometheusMetricsCannon
      ]
  
  testPrometheusMetricsGundeck :: TestM ()
  testPrometheusMetricsGundeck = do
    gundeck <- view tsGundeck
    get (runGundeckR gundeck . path "/i/metrics") !!! do
      const 200 === statusCode
      -- Should contain the request duration metric in its output
      const (Just "TYPE http_request_duration_seconds histogram") =~= responseBody
  
  testPrometheusMetricsCannon :: TestM ()
  testPrometheusMetricsCannon = do
    cannon <- view tsCannon
    get (runCannonR cannon . path "/i/metrics") !!! do
      const 200 === statusCode
      -- Should contain the request duration metric in its output
      const (Just "TYPE http_request_duration_seconds histogram") =~= responseBody
  