auth-token-fetch/main_test.go

   1 // -
   2 //   ========================LICENSE_START=================================
   3 //   O-RAN-SC
   4 //   %%
   5 //   Copyright (C) 2022: Nordix Foundation
   6 //   %%
   7 //   Licensed under the Apache License, Version 2.0 (the "License");
   8 //   you may not use this file except in compliance with the License.
   9 //   You may obtain a copy of the License at
  10 //
  11 //        http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 //   Unless required by applicable law or agreed to in writing, software
  14 //   distributed under the License is distributed on an "AS IS" BASIS,
  15 //   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 //   See the License for the specific language governing permissions and
  17 //   limitations under the License.
  18 //   ========================LICENSE_END===================================
  19 //
  20
  21 package main
  22
  23 import (
  24         "bytes"
  25         "encoding/json"
  26         "errors"
  27         "fmt"
  28         "io/ioutil"
  29         "net/http"
  30         "os"
  31         "testing"
  32         "time"
  33
  34         log "github.com/sirupsen/logrus"
  35         "github.com/stretchr/testify/require"
  36 )
  37
  38 func createHttpClientMock(t *testing.T, configuration *Config, token JwtToken) *http.Client {
  39         assertions := require.New(t)
  40         clientMock := NewTestClient(func(req *http.Request) *http.Response {
  41                 if req.URL.String() == configuration.AuthServiceUrl {
  42                         assertions.Equal(req.Method, "POST")
  43                         body := getBodyAsString(req, t)
  44                         assertions.Contains(body, "client_id="+configuration.ClientId)
  45                         assertions.Contains(body, "secret="+configuration.ClientSecret)
  46                         assertions.Contains(body, "grant_type="+configuration.GrantType)
  47                         contentType := req.Header.Get("content-type")
  48                         assertions.Equal("application/x-www-form-urlencoded", contentType)
  49
  50                         return &http.Response{
  51                                 StatusCode: 200,
  52                                 Body:       ioutil.NopCloser(bytes.NewBuffer(toBody(token))),
  53                                 Header:     make(http.Header), // Must be set to non-nil value or it panics
  54                         }
  55                 }
  56                 t.Error("Wrong call to client: ", req)
  57                 t.Fail()
  58                 return nil
  59         })
  60         return clientMock
  61 }
  62
  63 func TestFetchAndStoreToken(t *testing.T) {
  64         log.SetLevel(log.TraceLevel)
  65         assertions := require.New(t)
  66         configuration := NewConfig()
  67         configuration.AuthTokenOutputFileName = "/tmp/authToken" + fmt.Sprint(time.Now().UnixNano())
  68         configuration.ClientId = "testClientId"
  69         configuration.ClientSecret = "testClientSecret"
  70         configuration.RefreshMarginSeconds = 1
  71         context := NewContext(configuration)
  72
  73         t.Cleanup(func() {
  74                 os.Remove(configuration.AuthTokenOutputFileName)
  75         })
  76
  77         accessToken := "Access_token" + fmt.Sprint(time.Now().UnixNano())
  78         token := JwtToken{Access_token: accessToken, Expires_in: 7, Token_type: "Token_type"}
  79
  80         clientMock := createHttpClientMock(t, configuration, token)
  81
  82         go periodicRefreshIwtToken(clientMock, context)
  83
  84         await(func() bool { return fileExists(configuration.AuthTokenOutputFileName) }, t)
  85
  86         tokenFileContent, err := ioutil.ReadFile(configuration.AuthTokenOutputFileName)
  87         check(err)
  88
  89         assertions.Equal(accessToken, string(tokenFileContent))
  90
  91         context.Running = false
  92 }
  93
  94 func fileExists(fileName string) bool {
  95         if _, err := os.Stat(fileName); err == nil {
  96                 return true
  97         }
  98         log.Debug("Waiting for file: " + fileName)
  99         return false
 100 }
 101
 102 func await(predicate func() bool, t *testing.T) {
 103         MAX_TIME_SECONDS := 30
 104         for i := 1; i < MAX_TIME_SECONDS; i++ {
 105                 if predicate() {
 106                         return
 107                 }
 108                 time.Sleep(time.Second)
 109         }
 110         t.Error("Predicate not fulfilled")
 111         t.Fail()
 112 }
 113
 114 func TestStart(t *testing.T) {
 115         assertions := require.New(t)
 116         log.SetLevel(log.TraceLevel)
 117
 118         configuration := NewConfig()
 119         configuration.AuthTokenOutputFileName = "/tmp/authToken" + fmt.Sprint(time.Now().UnixNano())
 120         configuration.CACertsPath = configuration.CertPath
 121         context := NewContext(configuration)
 122         t.Cleanup(func() {
 123                 os.Remove(configuration.AuthTokenOutputFileName)
 124         })
 125
 126         start(context)
 127
 128         time.Sleep(time.Second * 5)
 129
 130         _, err := os.Stat(configuration.AuthTokenOutputFileName)
 131
 132         assertions.True(errors.Is(err, os.ErrNotExist))
 133         context.Running = false
 134 }
 135
 136 func toBody(token JwtToken) []byte {
 137         body, err := json.Marshal(token)
 138         check(err)
 139         return body
 140 }
 141
 142 type RoundTripFunc func(req *http.Request) *http.Response
 143
 144 func (f RoundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
 145         return f(req), nil
 146 }
 147
 148 //NewTestClient returns *http.Client with Transport replaced to avoid making real calls
 149 func NewTestClient(fn RoundTripFunc) *http.Client {
 150         return &http.Client{
 151                 Transport: RoundTripFunc(fn),
 152         }
 153 }
 154
 155 func getBodyAsString(req *http.Request, t *testing.T) string {
 156         buf := new(bytes.Buffer)
 157         if _, err := buf.ReadFrom(req.Body); err != nil {
 158                 t.Fail()
 159         }
 160         return buf.String()
 161 }