IFileInfo.OpenRead() does not lock file when using MockFileSystem #894

using System.IO.Abstractions;
using System.IO.Abstractions.TestingHelpers;
using FluentAssertions;
using NUnit.Framework;

namespace InstallerServiceTests.Package;

public class TestClass
{
  [Test]
  public void TestThatStreamIsDisposedAfterOpenRead()
  {
    // Given
    var mockFileSystem = new MockFileSystem();
    var fileInfo = mockFileSystem.FileInfo.FromFileName("aPath.txt");
    mockFileSystem.AddFile(fileInfo.FullName,
                           "");
    ClassUnderTest.MethodUnderTest(fileInfo);
    // When
    var action = () => fileInfo.Delete(); // write access on the still opened file
    // Then
    action.Should()
          .NotThrow();
  }
}

public static class ClassUnderTest
{
  public static void MethodUnderTest(IFileInfo fileInfo)
  {
    var stream = fileInfo.OpenRead();
    // stream is not disposed as it should be correctly
  }
}