problem: timeout on unit tests

src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/WsConnection.kt

@@ -405,7 +405,8 @@ open class WsConnection(
         )
 
         val response = Flux.from(rpcReceive.asFlux())
-            .doOnSubscribe { sendRpc(request) }
+            // send the request _after_ WS subscribes to the responses, otherwise the response may come before the actual subscription and be lost
+            .doOnRequest { sendRpc(request) }
             .filter { resp -> resp.id.asNumber() == expectedId }
             .take(Defaults.timeout)
             .take(1)

src/test/groovy/io/emeraldpay/dshackle/upstream/ethereum/WsConnectionSpec.groovy

@@ -92,7 +92,7 @@ class WsConnectionSpec extends Specification {
                     it.id.asNumber() == 15L && Global.objectMapper.readValue(it.result, TransactionJson) == tx
                 }
                 .expectComplete()
-                .verify(Duration.ofSeconds(5))
+                .verify(Duration.ofSeconds(1))
     }
 
     def "Makes a RPC call - return null"() {
@@ -115,7 +115,7 @@ class WsConnectionSpec extends Specification {
                             it.resultAsRawString == 'null'
                 }
                 .expectComplete()
-                .verify(Duration.ofSeconds(5))
+                .verify(Duration.ofSeconds(1))
     }
 
     def "Makes a RPC call - return error"() {
@@ -140,6 +140,6 @@ class WsConnectionSpec extends Specification {
                             it.error.code == RpcResponseError.CODE_METHOD_NOT_EXIST && it.error.message == "test"
                 }
                 .expectComplete()
-                .verify(Duration.ofSeconds(5))
+                .verify(Duration.ofSeconds(1))
     }
 }