test: add unit-tests for QueryIdProvider

test/Atc.Kusto.Tests/GlobalUsings.cs

@@ -1 +1,2 @@
-global using Atc.Kusto.Extensions.Internal;
+global using Atc.Kusto.Extensions.Internal;
+global using Atc.Kusto.Providers.Internal;

test/Atc.Kusto.Tests/Providers/Internal/QueryIdProviderTests.cs

@@ -0,0 +1,33 @@
+namespace Atc.Kusto.Tests.Providers.Internal;
+
+public sealed class QueryIdProviderTests
+{
+    private readonly QueryIdProvider sut = new();
+
+    [Theory, AutoNSubstituteData]
+    public void Create_WithValidSessionId_ReturnsExpectedQueryId(
+        Type queryType,
+        string sessionId)
+    {
+        // Arrange & Act
+        var actual = sut.Create(queryType, sessionId);
+
+        // Assert
+        actual
+            .Should()
+            .Be($"{queryType.Name}{sessionId.ToAlphaNumeric()}");
+    }
+
+    [Theory, AutoNSubstituteData]
+    public void Create_WithNullSessionId_ReturnsQueryIdWithNewGuid(
+        Type queryType)
+    {
+        // Arrange & Act
+        var actual = sut.Create(queryType, sessionId: null);
+
+        // Assert
+        actual
+            .Should().StartWith(queryType.Name)
+            .And.HaveLength(queryType.Name.Length + Guid.NewGuid().ToString("N").Length);
+    }
+}