Merge branch 'pull-request/320'

Merge branch 'pull-request/320'

* pull-request/320:
  this is test 5 not 6
  fix race condition
  more shared names that create race conditions
  change to a unique filename
  more shared filenames
  yet another shared filename
  don't share a filename to stop race conditions
  fix race condition for 2-4 and normalize names for others
  fix race condition when running tests in parallel
  clean up after test
  Fix #64572: Clean up after the test
  Fix #64572: Clean up after the test