public async Task EditSellerProfile_Successfull() { try { mockSellerManager.Setup(x => x.EditSellerProfile(It.IsAny <SellerDetails>())).ReturnsAsync(new bool()); SellerDetails seller = new SellerDetails() { Sellerid = 809, Username = "******", Password = "******", Companyname = "infosys", Gst = 47, Aboutcmpy = "gud", Address = "bangalore", Website = "www.infy.com", Email = "*****@*****.**", Mobileno = "9535678900" }; var result = await sellerController.EditSellerProfile(seller) as OkResult; Assert.That(result, Is.Not.Null); Assert.That(result.StatusCode, Is.EqualTo(200)); } catch (Exception e) { Assert.Fail(e.Message); } }