E2Manager/handlers/x2apSetupRequest_asn1_packer_test.go

   1 /*******************************************************************************
   2  *
   3  *   Copyright (c) 2019 AT&T Intellectual Property.
   4  *
   5  *   Licensed under the Apache License, Version 2.0 (the "License");
   6  *   you may not use this file except in compliance with the License.
   7  *   You may obtain a copy of the License at
   8  *
   9  *       http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *   Unless required by applicable law or agreed to in writing, software
  12  *   distributed under the License is distributed on an "AS IS" BASIS,
  13  *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *   See the License for the specific language governing permissions and
  15  *   limitations under the License.
  16  *
  17  *******************************************************************************/
  18 package handlers
  19
  20 import (
  21         "e2mgr/logger"
  22         "fmt"
  23         "strings"
  24         "testing"
  25 )
  26
  27 /*
  28  * Create and pack an x2ap setup request.
  29  * Verify the packed representation matches the want value.
  30  */
  31 func TestPackX2apSetupRequest(t *testing.T) {
  32         logger, _ := logger.InitLogger(logger.InfoLevel)
  33         pLMNId := []byte{0xbb, 0xbc, 0xcc}
  34         var testCases = []struct {
  35                 eNBId       []byte
  36                 eNBIdBitqty uint
  37                 packedPdu   string
  38         }{
  39                 {
  40                         eNBId:       []byte{0xab, 0xcd, 0x2}, /*00000010 -> 10000000*/
  41                         eNBIdBitqty: shortMacro_eNB_ID,
  42                         packedPdu:   "0006002b0000020015000900bbbccc8003abcd8000140017000001f700bbbcccabcd80000000bbbccc000000000001",
  43                 },
  44
  45                 {
  46                         eNBId:       []byte{0xab, 0xcd, 0xe},
  47                         eNBIdBitqty: macro_eNB_ID,
  48                         packedPdu: "0006002a0000020015000800bbbccc00abcde000140017000001f700bbbcccabcde0000000bbbccc000000000001",
  49                 },
  50                 {
  51                         eNBId:       []byte{0xab, 0xcd, 0x7}, /*00000111 -> 00111000*/
  52                         eNBIdBitqty: longMacro_eNB_ID,
  53                         //packedPdu:   "0006002b0000020015000900bbbccc8103abcd3800140017000001f700bbbcccabcd38000000bbbccc000000000001",
  54                         packedPdu:   "0006002b0000020015000900bbbcccc003abcd3800140017000001f700bbbcccabcd38000000bbbccc000000000001",
  55                 },
  56                 {
  57                         eNBId:       []byte{0xab, 0xcd, 0xef, 0x8},
  58                         eNBIdBitqty: home_eNB_ID,
  59                         packedPdu:   "0006002b0000020015000900bbbccc40abcdef8000140017000001f700bbbcccabcdef800000bbbccc000000000001",
  60                 },
  61         }
  62
  63         // TODO: Consider using testify's assert/require
  64         // testing/quick to input random value
  65         for _, tc := range testCases {
  66                 t.Run(tc.packedPdu, func(t *testing.T) {
  67
  68                         payload, err := packX2apSetupRequest(logger, MaxAsn1CodecAllocationBufferSize /*allocation buffer*/, MaxAsn1PackedBufferSize /*max packed buffer*/, MaxAsn1CodecMessageBufferSize /*max message buffer*/, pLMNId, tc.eNBId, tc.eNBIdBitqty)
  69                         if err != nil {
  70                                 t.Errorf("want: success, got: pack failed. Error: %v\n", err)
  71                         } else {
  72                                 t.Logf("packed X2AP setup request(size=%d): %x\n", len(payload), payload)
  73                                 tmp := fmt.Sprintf("%x", payload)
  74                                 if len(tmp) != len(tc.packedPdu) {
  75                                         t.Errorf("want packed len:%d, got: %d\n", len(tc.packedPdu)/2, len(payload)/2)
  76                                 }
  77
  78                                 if strings.Compare(tmp, tc.packedPdu) != 0 {
  79                                         t.Errorf("\nwant :\t[%s]\n got: \t\t[%s]\n", tc.packedPdu, tmp)
  80                                 }
  81                         }
  82                 })
  83         }
  84 }
  85
  86 /*Packing error*/
  87
  88 func TestPackX2apSetupRequestPackError(t *testing.T) {
  89         logger, _ := logger.InitLogger(logger.InfoLevel)
  90
  91         wantError := "packing error: #src/asn1codec_utils.c.pack_pdu_aux - Encoded output of E2AP-PDU, is too big:46"
  92         pLMNId := []byte{0xbb, 0xbc, 0xcc}
  93         eNBId := []byte{0xab, 0xcd, 0xe}
  94         eNBIdBitqty := uint(macro_eNB_ID)
  95         _, err := packX2apSetupRequest(logger, MaxAsn1CodecAllocationBufferSize /*allocation buffer*/, 40 /*max packed buffer*/, MaxAsn1CodecMessageBufferSize /*max message buffer*/, pLMNId[:], eNBId[:], eNBIdBitqty)
  96         if err != nil {
  97                 if 0 != strings.Compare(fmt.Sprintf("%s", err), wantError) {
  98                         t.Errorf("want failure: %s, got: %s", wantError, err)
  99                 }
 100         } else {
 101                 t.Errorf("want failure: %s, got: success", wantError)
 102
 103         }
 104 }