Add missing ClientCreationTests for Azure Synapse health check

Co-authored-by: samtrion <[email protected]>

Author: Copilot

tests/NetEvolve.HealthChecks.Tests.Unit/Azure.Synapse/SynapseWorkspaceAvailableHealthCheckTests.cs

@@ -0,0 +1,28 @@
+namespace NetEvolve.HealthChecks.Tests.Unit.Azure.Synapse;
+
+using System.Diagnostics;
+using Microsoft.Extensions.DependencyInjection;
+using NetEvolve.Extensions.TUnit;
+using NetEvolve.HealthChecks.Azure.Synapse;
+
+[TestGroup($"{nameof(Azure)}.{nameof(Synapse)}")]
+public class ClientCreationTests
+{
+    [Test]
+    public void CreateArtifactsClient_InvalidMode_ThrowUnreachableException()
+    {
+        var options = new SynapseWorkspaceAvailableOptions { Mode = (SynapseClientCreationMode)13 };
+        var serviceProvider = new ServiceCollection().BuildServiceProvider();
+
+        _ = Assert.Throws<UnreachableException>(() => ClientCreation.CreateArtifactsClient(options, serviceProvider));
+    }
+
+    [Test]
+    public void CreateArtifactsClient_ModeServiceProvider_ThrowUnreachableException()
+    {
+        var options = new SynapseWorkspaceAvailableOptions { Mode = SynapseClientCreationMode.ServiceProvider };
+        var serviceProvider = new ServiceCollection().BuildServiceProvider();
+
+        _ = Assert.Throws<UnreachableException>(() => ClientCreation.CreateArtifactsClient(options, serviceProvider));
+    }
+}