private File createFakeDirectory(final String dirName, final String diskFileBaseName)
      throws IOException {
    File aDir = temporaryFolder.newFolder(dirName);
    new File(aDir, diskFileBaseName + IF_FILE_SUFFIX).createNewFile();
    new File(aDir, diskFileBaseName + CRF_FILE_SUFFIX).createNewFile();
    new File(aDir, diskFileBaseName + DRF_FILE_SUFFIX).createNewFile();
    return aDir;
  }
Create a directory containing empty oplog files.

@param dirName The name of the directory to create.
@param diskFileBaseName The base name of the oplog files created in the new directory.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/backup/BackupInspectorIntegrationTest.java