website/Website.Tests/Data/AuthenticationProviderTests.cs

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();
		}
	}
}