RestSharp | Simple REST and HTTP API Client for .NET | REST library

Using RestSharp I have written the following test and the expected outcome is to return error 400 with some error messages in Json format.

But the following test fails at await client.PostAsync(request) and throws "System.Net.Http.HttpRequestException : Request failed with status code BadRequest" and does not reach the Assertion statement.

Using Fiddler I verified my request and Reponses are working as expected.

Would appreciate any advice to solve this. Thank you!

It is probably really easy to solve, but I am struggling with it a lot.

I am connected to API using RestSharp - everything is working fine, but I do not know how to pass parameters to a method 'couse they are in a weird format (at least for me, I am newbie :)).

Te method's parameter should look like that:

I'm using RestSharp for making requests and deserializing responses into C# models with NewtonsoftJsonSerializer. And I ran into the situation where I am getting 2 similar json strings.

First:

I am trying to use Rest Sharp for the first time for automating API Testing. I started with sending a basic GET call but Rest Sharp does not recognize the GET method. I have already added RESTSHARP NuGet package. Any idea what am I doing wrong? Any link to existing API testing code/framework?

I'm using the new RestSharp v107, which started using the System.Text.Json classes to manage JSON (de)serialization.

This being the case, I thought we would be able to provide our own instance of JsonSerializerOptions to customize how serialization is handled, however I cannot see any settings in the RestClientOptions object to set the json serialization options. Is there a way to do this?

I get an error (after update RestSharp - v107) on the following line:

var contacts = new JsonDeserializer().Deserialize>(response);

Error CS0246 The type or namespace name 'JsonDeserializer' could not be found (are you missing a using directive or an assembly reference?)

I have restsharp 107.1.2 loaded via nuget target framework is .net 6.0. The following code claims that IRestResponse reference is missing, though I feel like I'm following pretty close to the RestSharp documentation. What am I missing?

In a previous version of RestSharp I was able to add a content-type:application/json

I'm new to docker and i was trying to migrate my API written in .NET 6 from IIS to a Docker.

So i've wrote a Docker file