private static File[] getMyDiskDirs() {
    long random = new Random().nextLong();
    File file = new File(Long.toString(random));
    assertThat(file.mkdirs()).isTrue();
    return new File[] {file};
  }
Tests the use of the per-delta "forceRecalculateSize" flag.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/DeltaForceSizingFlagDUnitTest.java