Styjun

I have created an ASP.NET web API which has a controller named ImageSaveController. This has an InsertImage method which inserts data into database and is an HttpPost method. This method receives an object of type ImageData as a parameter. The code for the controller and the parameter class are given below:

public class ImageSaveController : ApiController

 [HttpPost]
 public IHttpActionResult InsertImage(ImageData imageData)
 
 System.Data.SqlClient.SqlConnection conn = null;
 try
 
 //Image save to database code here
 
 catch (Exception ex)
 
 return Content(HttpStatusCode.NotModified, ex.Message);
 
 finally
 
 if (conn != null)
 conn.Close();
 
 return Content(HttpStatusCode.OK,""); 
 


//ImageData class
public class ImageData

 public int Id get; set; 
 public byte[] ImageValue get; set; 

I would like to test it from a client. As you can notice, the ImageValue property of the ImageData class is a byte array. Not sure how to pass the C# class parameter to this method. Ideally I would like to pass the parameter as json and I am not sure how to construct the json for this purpose. I am also not sure whether it could be tested using the chrome app called postman.

Open postman enter your url to the action:

Add header: Content-Type - application/json.

In body tab check "raw" (JSON) and type your data.

POST /api/ImageSave/InsertImage/ HTTP/1.1
Host: localhost:32378
Content-Type: application/json
Cache-Control: no-cache

 "id" : 1,
 "imageValue" : [11,141,123,121]

source Web API 2 POST request simulation in POSTMAN Rest Client

If you want to make good tests, the better solution is to write unit tests.

This is what I use to do:
Use a REST client tester like Postman or Fiddler. I use Postman which is an app for Google Chrome.

For easy construction of JSON you can create a HttpGet method on you controller and return a fake constructed ImageData and call it from Postman. Here you will see the JSON and use that for input to the POST method.

public class ImageSaveController : ApiController

 public ImageData Get()
 
 return new ImageData
 
 // insert test data here
 ;
 

 [HttpPost]
 public IHttpActionResult InsertImage(ImageData imageData)
 
 System.Data.SqlClient.SqlConnection conn = null;
 try
 
 //Image save to database code here
 
 catch (Exception ex)
 
 return Content(HttpStatusCode.NotModified, ex.Message);
 
 finally
 
 if (conn != null)
 conn.Close();
 
 return Content(HttpStatusCode.OK,"");