                   match_config:
                     http_request_generic_body_match:
                       patterns:
-                        - string_match: match_me
+                        - string_match: \(requestStringMatch)
               - name: envoy.filters.http.buffer
                 typed_config:
                   "@type": type.googleapis.com/envoy.extensions.filters.http.buffer.v3.Buffer

                                               authority: "example.com", path: "/test")
      .addUpstreamHttpProtocol(.http2)
      .build()
    let body = try XCTUnwrap("match_me".data(using: .utf8))

    client
      .newStreamPrototype()

    let apiListenerType = "type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager"
    // swiftlint:disable:next line_length
    let assertionFilterType = "type.googleapis.com/envoymobile.extensions.filters.http.assertion.Assertion"
    let requestStringMatch = "match_me"
    let config =
    """
    static_resources:
