MockServer Recipes

Mock Mode (with pre-defined mocks)

• define expectioans in ./mocks
• refer to the payments.json and transactions.json examples

docker compose up -d

curl "http://localhost:1080/transactions?transactionRef=XVJ3KF9" | jq

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   132  100   132    0     0    425      0 --:--:-- --:--:-- --:--:--   425
{
  "transactionId": "945c47d1-203f-49ca-896a-5279d8075785",
  "transactionRef": "XVJ3KF9",
  "amount": 65000,
  "charges": 75
}


curl -X POST "http://localhost:1080/payments" -H 'Content-Type: application/json' -d '{"counterpartyIBAN": "CH8089144265645434356", "amount": 15000}' | jq

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   121  100    59  100    62   1401   1473 --:--:-- --:--:-- --:--:--  2880
{
  "status": "accepted",
  "transactionRef": "XVJ3KF9"
}

Mock Mode (record via proxy)

Record (via proxy)

• enable proxy mode and start the mockserver

mockserver:
    ...
    command: -logLevel DEBUG -serverPort 1080 -proxyRemotePort 80 -proxyRemoteHost integration
    ...

• build the mocks (proxy mode will record the expectations)

curl -H "X-Token:$(uuidgen)" http://localhost:8089/ | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    73  100    73    0     0    160      0 --:--:-- --:--:-- --:--:--   159
{
  "source": "integration-service",
  "processed": "2024-08-18T10:39:39.655213"
}

Extract & Load Mocks

• extract and load the expectations

curl -v -X PUT "http://localhost:1080/mockserver/retrieve?type=RECORDED_EXPECTATIONS&format=JSON" -o ./mocks/recording.json

Transform

• remove X-Token header

cat <<< $(jq 'del(.[].httpRequest.headers["X-Token"])' ./mocks/recording.json) > ./mocks/recording.json

Mock

• disable the proxy mode and restart mockserver

mockserver:
    ...
    # command: -logLevel DEBUG -serverPort 1080 -proxyRemotePort 80 -proxyRemoteHost integration
    ...

• bring down the integration service
• re-initate the same request (response will be by the mock, instead of integration service)

curl http://localhost:8089/ | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    73  100    73    0     0    229      0 --:--:-- --:--:-- --:--:--   229
{
  "source": "integration-service",
  "processed": "2024-08-18T10:39:39.655213"
}

date
Sun Aug 18 13:45:41 +03 2024

Architecture