chore: import upstream snapshot with attribution

dotnet/test/VectorData/SqliteVec.ConformanceTests/Support/SqliteTestEnvironment.cs

@@ -0,0 +1,34 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Data.Sqlite;
+
+namespace SqliteVec.ConformanceTests.Support;
+
+internal static class SqliteTestEnvironment
+{
+    private static readonly Lazy<bool> s_canUseSqlite = new(CanCreateConnectionAndLoadExtension);
+
+    internal static bool CanUseSqlite => s_canUseSqlite.Value;
+
+    private static bool CanCreateConnectionAndLoadExtension()
+    {
+        try
+        {
+            using var connection = new SqliteConnection("Data Source=:memory:;");
+            connection.Open();
+            connection.LoadVector();
+        }
+        catch (TypeInitializationException ex)
+        {
+            Console.WriteLine("Failed to load sqlite native dependency: " + ex.Message);
+            return false;
+        }
+        catch (SqliteException ex)
+        {
+            Console.WriteLine("Failed to load sqlite_vec extension: " + ex.Message);
+            return false;
+        }
+
+        return true;
+    }
+}