On Windows, test('create SI smoke test', _createSI); failed due to following error
PathNotFoundException: Creation of temporary directory failed, path = '/tmp\' (OS Error: The system cannot find the path specified.
, errno = 3)
dart:io _Directory.createTempSync
test\test_main.dart 432:37 _createSI
And
PathAccessException: Deletion failed, path = 'C:\Users\...\AppData\Local\Temp\a7e5e9bc' (OS Error: The process cannot access the file because it is being used by another process.
, errno = 32)
dart:io FileSystemEntity.deleteSync
test\test_main.dart 439:9 _createSI
On Windows,
test('create SI smoke test', _createSI);
failed due to following errorAnd
This PR try to fix it.