Use new Auth API

Website.Tests/Data/AuthenticationProviderTests.cs

@@ -0,0 +1,55 @@
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using FluentAssertions;
+using Website.Data;
+using Website.Models;
+using Xunit;
+
+namespace Website.Tests.Data {
+	public class AuthenticationProviderTests {
+		[Fact]
+		public async Task Authenticate_WithSuccessfulLoginRequest_ReturnsUser() {
+			const string json = @"{""username"":""username"",""password"":""password""}";
+			var httpClient = new HttpClientBuilder()
+							 .WithMethod(HttpMethod.Post)
+							 .WithUrl("/authenticate")
+							 .WithPostBody(@"{""Username"":""username"",""Password"":""password"",""ReturnUrl"":null}")
+							 .WithResponse(json)
+							 .Build();
+
+			var request = new LoginRequest {
+				Username = "username",
+				Password = "password"
+			};
+
+			var expectedUser = new User {
+				Username = "username",
+				Password = "password"
+			};
+
+			var provider = new AuthenticationProvider(httpClient);
+			(await provider.Authenticate(request)).Should().BeEquivalentTo(expectedUser);
+		}
+
+		[Fact]
+		public async Task Authenticate_WithFailedLoginRequest_ReturnsNull() {
+			const string json = @"{""username"":""username"",""password"":""password""}";
+			var httpClient = new HttpClientBuilder()
+							 .WithMethod(HttpMethod.Post)
+							 .WithUrl("/authenticate")
+							 .WithPostBody(@"{""Username"":""username"",""Password"":""password"",""ReturnUrl"":null}")
+							 .WithErrorStatus(HttpStatusCode.Unauthorized)
+							 .WithResponse(json)
+							 .Build();
+
+			var request = new LoginRequest {
+				Username = "username",
+				Password = "wrong"
+			};
+
+			var provider = new AuthenticationProvider(httpClient);
+			(await provider.Authenticate(request)).Should().BeNull();
+		}
+	}
+}