private void verifyColumnFamilyDescriptor(int expected, final ColumnFamilyDescriptor[] hcds,
    final TableName tableName, final byte[]... families) {
    for (ColumnFamilyDescriptor hcd : hcds) {
      assertEquals(expected, hcd.getMaxVersions());
    }
  }
Start up a mini cluster and put a small table of empty regions into it.
hbase-server/src/test/java/org/apache/hadoop/hbase/TestColumnFamilyDescriptorDefaultVersions.java