Stub server should support generator MockServerURL

[tienvx]

Generator MockServerURL is used like this:

{
      'pact:matcher:type': 'regex',
      'pact:generator:type': 'MockServerURL',
      regex: '.*(\\/example/path)$',
      value: 'http://localhost:8080/example/path',
      example: 'http://localhost:8080/example/path',
    }

Mock Server support this generator (obviously from its name), so Consumer's contract test passed.
But Stub Server doesn't support this generator, so Consumer's integration test failed.

I think:

• This is a bug, and Stub Server should support this generator (because it support other generators, at least I tested with RandomInt)
• Should we rename MockServerURL to something else that say that Stub Server support it too? I don't have suggestion, naming is hard.

Here are some additional information:

• Demo project https://github.com/tienvx/test-mock-server-url-generator
• Slack's discussion https://pact-foundation.slack.com/archives/CA2S7E6KC/p1682530823430519
• Sequence diagram from what I understand + expect what to happen

Pact file from the above demo project

In case you don't want to run the demo project to see the contract file

{
"consumer": {
  "name": "MyConsumer"
},
"interactions": [
  {
    "description": "a request for all urls",
    "key": "285dde1d2816ddad",
    "pending": false,
    "providerStates": [
      {
        "name": "I have a list of urls"
      }
    ],
    "request": {
      "headers": {
        "Accept": [
          "application/json"
        ]
      },
      "method": "GET",
      "path": "/urls"
    },
    "response": {
      "body": {
        "content": {
          "urls": [
            {
              "url": "http://localhost:8080/example/path"
            }
          ]
        },
        "contentType": "application/json",
        "encoded": false
      },
      "generators": {
        "body": {
          "$.urls[*].url": {
            "example": "http://localhost:8080/example/path",
            "regex": ".*(\\/example/path)$",
            "type": "MockServerURL"
          }
        }
      },
      "headers": {
        "Content-Type": [
          "application/json"
        ]
      },
      "matchingRules": {
        "body": {
          "$.urls": {
            "combine": "AND",
            "matchers": [
              {
                "match": "type",
                "min": 1
              }
            ]
          },
          "$.urls[*].url": {
            "combine": "AND",
            "matchers": [
              {
                "match": "regex",
                "regex": ".*(\\/example/path)$"
              }
            ]
          }
        },
        "header": {}
      },
      "status": 200
    },
    "type": "Synchronous/HTTP"
  },
  {
    "description": "a request the url http://provider.com/example/path",
    "key": "7824381c6cca0583",
    "pending": false,
    "providerStates": [
      {
        "name": "I have a url http://provider.com/example/path"
      }
    ],
    "request": {
      "headers": {
        "Accept": [
          "application/json"
        ]
      },
      "method": "GET",
      "path": "/example/path"
    },
    "response": {
      "body": {
        "content": {
          "key": "value"
        },
        "contentType": "application/json",
        "encoded": false
      },
      "headers": {
        "Content-Type": [
          "application/json"
        ]
      },
      "matchingRules": {
        "body": {
          "$.key": {
            "combine": "AND",
            "matchers": [
              {
                "match": "type"
              }
            ]
          }
        },
        "header": {}
      },
      "status": 200
    },
    "type": "Synchronous/HTTP"
  }
],
"metadata": {
  "pact-js": {
    "version": "11.0.2"
  },
  "pactRust": {
    "ffi": "0.4.0",
    "models": "1.0.4"
  },
  "pactSpecification": {
    "version": "4.0"
  }
},
"provider": {
  "name": "MyProvider"
}
}

[rholshausen]

This may be due to https://github.com/pact-foundation/pact-reference/releases/tag/libpact_models-v1.1.3

[tienvx]

I follow these steps:

• Clone this project (pact-stub-server)
• Update pact_models in Cargo.toml to ~1.1.3
• Run cargo build
• Follow those steps in https://github.com/tienvx/test-mock-server-url-generator
• Instead of starting stub server using yarn, run this command instead: target/debug/pact-stub-server -p 8001 -d ../test-mock-server-url-generator/pacts --cors

But it doesn't fix the issue. The connection refused error is still there.