Is it possible to assert on received request?

Nobody has claimed this yet.

Hi! I would like to assert on the received request body of a mock, but can't figure out how to acheive this.

To illustrate, let's say that I want to verify that a specific mock has received a request body that matches:

```json
{
"foo": "bar"
}
```

I tried to do this with Matchers:

```rust
let expected_body = json!({ "foo": "bar" });

wiremock::Mock::given(method("POST"))
.and(wiremock::matchers::path("/foo"))
.and(body_json(expected_body));
```

, but it seems that the mock now simply returns 404 if the body doesn't match. This does fail the test, but it fails it in a very subtle way. I would like for my tests to fail more explicitly with a message like "Mock received incorrect body ..." from `assert_eq!`.

I tried creating my custom Matcher that asserts on the body, but then I realized that since the mock runs in a totally separate process from the tests, this will just crash the mock server, which fails the test in an arguably even more subtle way.

I could check `MockServer::received_requests`, but this returns all requests for the entire test, which means that I have to somehow figure out which request was received by which mock.

Is there a better way to acheive this that I'm missing?

Start by reviewing MockServer::received_requests, body_json, and the custom Matcher behavior described in the issue. Determine how a request can be associated with a specific mock and how an assertion failure can be reported back to the test process; done means incorrect request bodies produce an explicit test failure rather than a 404 or server crash.

Written by the indexing model from the issue text.