switched to NUnit for testing

Author: dontedorsey

ui/tests/ApiClient.Tests/HealthTests.cs

@@ -1,7 +1,10 @@
 using WireMock.Server;
 using WireMock.RequestBuilders;
 using WireMock.ResponseBuilders;
-using Xunit;
+using System;
+using System.Net.Http;
+using System.Threading.Tasks;
+using NUnit.Framework;
 
 public class HealthTests : IDisposable
 {
@@ -18,8 +21,8 @@ public HealthTests()
         _client = new ApiClient(http);
     }
 
-    [Fact(DisplayName = "Health returns true on 200")]
-    public async Task Health_Ok() => Assert.True(await _client.HealthAsync());
+    [Test(Description = "Health returns true on 200")]
+    public async Task Health_Ok() => Assert.That(await _client.HealthAsync());
 
     public void Dispose() => _server.Stop();
 }