Wiremock Request Templating for JSON Payload with multiple allowed keys, but same response

Question

Trying to mock an API endpoint that allows a request with 2 possible payloads, but the same response:

Request Option 1

{
  "key1": "value1"
}

Request Option 2

{
  "key2": "value2"
}

Based on the Request Templating documentation, I see that there's an option to define some regex for matchesJsonPath. However, I'm unable to figure out how to provide a configuration that will allow key1 or key2.

This is what I'd tried, but it doesn't seem to work:

{
  // ... other configs
  "request": {
    "bodyPatterns": [
      {
        "matchesJsonPath": "$.(key1|key2)"
      }
    ]
  }
}

Is it possible to provide 1 definition that supports both payloads, or do I have to create 2 stubs?

Note: I am using a standalone Wiremock Docker image, so options for more complex handling using Java are limited.

Answer 1

Your JsonPath matcher is formatted incorrectly. You need to apply a filter/script (denoted by ?()). More information about how JsonPath matchers work can be found here.

Here is what the properly formatted JsonPath matcher could look like:

{
  "matchesJsonPath": "$[?(@.key1 || @.key2)]"
}

If you need the key1 and key2 to have specific values, that would look like:

{
  "matchesJsonPath": "$[?(@.key1 == 'value1' || @.key2 == 'value2')]"
}