I think I found a way to add testing for the changeset f61c08c.

 1. Create a test file with FILE_SHARE_DELETE mode.
 2. Call DeleteFile() on that file.
 3. Call stat() on that file.
 4. Check if ENOENT is raised in step 3.

Confirmed to work fine on GitHub Action:

    WindowsFile exceptions:
     test: ERROR_SHARING_VIOLATION raised:        .: (0.001220)
     test: Errno::ENOENT raised:                  .: (0.000633)
     test: Errno::ENOENT raised on DeletePending: .: (0.000717)
     test: nothing raised:                        .: (0.000835)

Signed-off-by: Fujimoto Seiji <fujimoto@ceptord.net>