Add mef-exportable IFileSystemService

src/Core.UnitTests/SystemAbstractions/FileSystemServiceTests.cs

@@ -0,0 +1,34 @@
+/*
+ * SonarLint for Visual Studio
+ * Copyright (C) 2016-2024 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+using SonarLint.VisualStudio.Core.SystemAbstractions;
+using SonarLint.VisualStudio.TestInfrastructure;
+
+namespace SonarLint.VisualStudio.Core.UnitTests.SystemAbstractions;
+
+[TestClass]
+public class FileSystemServiceTests
+{
+    [TestMethod]
+    public void MefCtor_CheckIsExported() => MefTestHelpers.CheckTypeCanBeImported<FileSystemService, IFileSystemService>();
+
+    [TestMethod]
+    public void MefCtor_CheckIsSingleton() => MefTestHelpers.CheckIsSingletonMefComponent<FileSystemService>();
+}

src/Core/SystemAbstractions/IFileSystemService.cs

@@ -0,0 +1,30 @@
+/*
+ * SonarLint for Visual Studio
+ * Copyright (C) 2016-2024 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+using System.ComponentModel.Composition;
+using System.IO.Abstractions;
+
+namespace SonarLint.VisualStudio.Core.SystemAbstractions;
+
+public interface IFileSystemService : IFileSystem; // separate export interface to avoid conflicts
+
+[Export(typeof(IFileSystemService))]
+[PartCreationPolicy(CreationPolicy.Shared)]
+public sealed class FileSystemService : FileSystem, IFileSystemService; // exporting class