private static void deleteFiles() {
    for (final File dir : dirs) {
      File[] files = dir.listFiles();
      for (final File file : files) {
        file.delete();
      }
    }
  }
This test is for testing Disk attributes set via xml.

A cache and region are created using an xml. The regions are then verified to make sure that all
the attributes have been correctly set

@since GemFire 5.1
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskRegCacheXmlJUnitTest.java