C# - RestSharp - GET - Assert image png

Question

I have created a API tests using RestSharp for test automation

I want to create a test where I Assert that and I get the correct image from a GET request in the response

client = new RestClient(ConfigurationHelper.GetValue("BaseURL"));
client.Authenticator = new NtlmAuthenticator((Domain + User), Password);
request = new RestRequest(EndPoint, Method.GET);
IRestResponse restResponse = await client.ExecuteAsync(request);
var response = restResponse.Content;

However when I set a breakpoint at the last line, the response content is displayed as a string

How can I assert this correctly? Or is there a better way to send the GET request and assert the response as an image

Instead of ExecuteAsync use DownloadData to get bytes of the file. You can assert equality of the generated hash of the file then. https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.hashalgorithm.computehash?view=net-5.0 — Hamed, Jan 03 '21 at 12:06

score 1 · Answer 1 · answered Jan 03 '21 at 12:58

This is answear How to use restsharp to download file on your question.

But I will modify your test a little bit:

Create request to download image
You get array of image bytes

request = new RestRequest(EndPoint, Method.GET);
byte[] restResponse = client.DownloadData(request);

And check image type Determine file type of an image
Also, you can check length of image - if the image is static in your test.

C# - RestSharp - GET - Assert image png

1 Answers1