/* Copyright 2017 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package metrics import ( "net/http/httptest" "testing" "time" "github.com/stretchr/testify/assert" ) func getTestResponse(start time.Time, activityTimeout, successTimeout time.Duration, checkMonitoring bool) *httptest.ResponseRecorder { req := httptest.NewRequest("GET", "/health-check", nil) w := httptest.NewRecorder() healthCheck := NewHealthCheck(activityTimeout, successTimeout) if checkMonitoring { healthCheck.StartMonitoring() } healthCheck.lastActivity = start healthCheck.lastSuccessfulRun = start healthCheck.ServeHTTP(w, req) return w } func TestOkServeHTTP(t *testing.T) { w := getTestResponse(time.Now(), time.Second, time.Second, true) assert.Equal(t, 200, w.Code) } func TestFailTimeoutServeHTTP(t *testing.T) { w := getTestResponse(time.Now().Add(time.Second*-2), time.Second, time.Second, true) assert.Equal(t, 500, w.Code) } func TestMonitoringOffAfterTimeout(t *testing.T) { w := getTestResponse(time.Now().Add(time.Second*-2), time.Second, time.Second, false) assert.Equal(t, 200, w.Code) } func TestMonitoringOffBeforeTimeout(t *testing.T) { w := getTestResponse(time.Now().Add(time.Second*2), time.Second, time.Second, false) assert.Equal(t, 200, w.Code) } func TestUpdateLastActivity(t *testing.T) { timeout := time.Second start := time.Now().Add(timeout * -2) // to make sure it doesn't cause health check failure lastSuccess := time.Now().Add(timeout * 10) req := httptest.NewRequest("GET", "/health-check", nil) healthCheck := NewHealthCheck(timeout, timeout) healthCheck.StartMonitoring() healthCheck.lastActivity = start healthCheck.lastSuccessfulRun = lastSuccess w := httptest.NewRecorder() healthCheck.ServeHTTP(w, req) assert.Equal(t, 500, w.Code) w = httptest.NewRecorder() healthCheck.UpdateLastActivity(time.Now()) healthCheck.ServeHTTP(w, req) assert.Equal(t, 200, w.Code) } func TestUpdateActivityAtUpdateLastSuccessfulRun(t *testing.T) { timeout := time.Second start := time.Now().Add(timeout * -2) // to make sure it doesn't cause health check failure lastSuccess := time.Now().Add(timeout * 10) req := httptest.NewRequest("GET", "/health-check", nil) healthCheck := NewHealthCheck(timeout, timeout) healthCheck.StartMonitoring() healthCheck.lastActivity = start healthCheck.lastSuccessfulRun = lastSuccess w := httptest.NewRecorder() healthCheck.ServeHTTP(w, req) assert.Equal(t, 500, w.Code) w = httptest.NewRecorder() healthCheck.UpdateLastSuccessfulRun(time.Now()) healthCheck.ServeHTTP(w, req) assert.Equal(t, 200, w.Code) // verify last successful run from the future wasn't overwritten assert.Equal(t, true, healthCheck.lastSuccessfulRun.After(healthCheck.lastActivity)) } func TestUpdateLastSuccessfulRun(t *testing.T) { timeout := time.Second start := time.Now().Add(timeout * -2) // to make sure it doesn't cause health check failure lastActivity := time.Now().Add(timeout * 10) req := httptest.NewRequest("GET", "/health-check", nil) healthCheck := NewHealthCheck(timeout, timeout) healthCheck.StartMonitoring() healthCheck.lastActivity = lastActivity healthCheck.lastSuccessfulRun = start w := httptest.NewRecorder() healthCheck.ServeHTTP(w, req) assert.Equal(t, 500, w.Code) w = httptest.NewRecorder() healthCheck.UpdateLastSuccessfulRun(time.Now()) healthCheck.ServeHTTP(w, req) assert.Equal(t, 200, w.Code) // verify last activity timestamp from the future wasn't overwritten assert.Equal(t, true, healthCheck.lastActivity.After(healthCheck.lastSuccessfulRun)) }