136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package http
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import (
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"fmt"
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"net"
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"net/http"
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"net/http/httptest"
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"net/url"
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"strconv"
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"strings"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/probe"
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)
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const FailureCode int = -1
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func TestHTTPProbeChecker(t *testing.T) {
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handleReq := func(s int, body string) func(w http.ResponseWriter, r *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(s)
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w.Write([]byte(body))
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}
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}
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prober := New()
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testCases := []struct {
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handler func(w http.ResponseWriter, r *http.Request)
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reqHeaders http.Header
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health probe.Result
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accBody string
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}{
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// The probe will be filled in below. This is primarily testing that an HTTP GET happens.
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{
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handler: handleReq(http.StatusOK, "ok body"),
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health: probe.Success,
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accBody: "ok body",
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},
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{
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// Echo handler that returns the contents of request headers in the body
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handler: func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(200)
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output := ""
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for k, arr := range r.Header {
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for _, v := range arr {
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output += fmt.Sprintf("%s: %s\n", k, v)
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}
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}
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w.Write([]byte(output))
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},
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reqHeaders: http.Header{
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"X-Muffins-Or-Cupcakes": {"muffins"},
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},
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health: probe.Success,
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accBody: "X-Muffins-Or-Cupcakes: muffins",
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},
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{
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// Echo handler that returns the contents of Host in the body
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handler: func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(200)
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w.Write([]byte(r.Host))
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},
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reqHeaders: http.Header{
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"Host": {"muffins.cupcakes.org"},
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},
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health: probe.Success,
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accBody: "muffins.cupcakes.org",
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},
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{
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handler: handleReq(FailureCode, "fail body"),
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health: probe.Failure,
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},
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{
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handler: handleReq(http.StatusInternalServerError, "fail body"),
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health: probe.Failure,
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},
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{
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handler: func(w http.ResponseWriter, r *http.Request) {
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time.Sleep(3 * time.Second)
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},
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health: probe.Failure,
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},
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}
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for i, test := range testCases {
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func() {
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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test.handler(w, r)
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}))
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defer server.Close()
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u, err := url.Parse(server.URL)
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if err != nil {
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t.Errorf("case %d: unexpected error: %v", i, err)
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}
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_, port, err := net.SplitHostPort(u.Host)
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if err != nil {
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t.Errorf("case %d: unexpected error: %v", i, err)
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}
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_, err = strconv.Atoi(port)
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if err != nil {
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t.Errorf("case %d: unexpected error: %v", i, err)
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}
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health, output, err := prober.Probe(u, test.reqHeaders, 1*time.Second)
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if test.health == probe.Unknown && err == nil {
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t.Errorf("case %d: expected error", i)
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}
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if test.health != probe.Unknown && err != nil {
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t.Errorf("case %d: unexpected error: %v", i, err)
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}
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if health != test.health {
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t.Errorf("case %d: expected %v, got %v", i, test.health, health)
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}
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if health != probe.Failure && test.health != probe.Failure {
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if !strings.Contains(output, test.accBody) {
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t.Errorf("Expected response body to contain %v, got %v", test.accBody, output)
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}
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}
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}()
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}
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}
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