small extension to print out error messages

Tests/PlantTests.cs

@@ -1,4 +1,3 @@
-using api.Events.Collections.Server;
 using api.Events.PlantEvents.Client;
 using api.Events.PlantEvents.Server;
 using api.Events.Statistics;
@@ -19,6 +18,7 @@ public async Task CreatePlant()
         var createPlantDto = GenerateRandomCreatePlantDto();
 
         var webSocketTestClient = await new WebSocketTestClient().ConnectAsync();
+        webSocketTestClient.SubscribeToErrors();
 
         await webSocketTestClient.DoAndAssert(new ClientWantsToCreatePlantDto { CreatePlantDto = createPlantDto, Jwt = jwt }, receivedMessages =>
         {

Tests/WebSocketTestClientExtension.cs

@@ -0,0 +1,21 @@
+using System.Text.Json;
+using api.Events.Global;
+using lib;
+using Websocket.Client;
+
+namespace Tests;
+
+public static class WebSocketTestClientExtension
+{
+    public static void SubscribeToErrors(this WebSocketTestClient client)
+    {
+        client.Client.MessageReceived.Subscribe<ResponseMessage>(msg =>
+        {
+            var baseDto = JsonSerializer.Deserialize<BaseDto>(msg.Text);
+            if (baseDto is ServerSendsErrorMessage errorMessage)
+            {
+                Console.WriteLine(errorMessage.Error);
+            }
+        });
+    }
+}