Pact Foundation

Been trying to figure out the right matching rule for this sitaution. Below is the body
```{
  "ok" : true,
  "systems" : {
    "GooglePubSub" : {
      "ok" : "true"
    },
    "Database" : {
      "ok" : "true"
    },
    "GoogleGroups" : {
      "ok" : "true"
    },
    "GoogleIam" : {
      "ok" : "true"
    },
    "OpenDJ" : {
      "ok" : "true"
    }
  }
}```
I would want to make sure that each system name (“GooglePubSub” etc) is a string. I know that you can do a matching rule on the ok type, but not really sure how to check the field name

It would probably be a method named something like “each key like”

I think <https://docs.pact.io/implementation_guides/jvm/consumer#matching-any-key-in-a-map> is what you want. My understanding is that these matchers are exposed to the scale interface yeah?

I don’t know if scale ITV does. `pact4s` I think would

If you know the keys in advance, you don’t need to check the types, you can just check that they exist and their values are correct. But I suspect you know this, and that there could be many keys

You could potentially deal with this using Provider states (given that GooglePubSub, Database… exist)

In the case that I can’t check the field name, is there a trick to get a similar effect?