ceph/src/test/osd/TestECBackend.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2013 Inktank Storage, Inc.
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #include <iostream>
  16 #include <sstream>
  17 #include <errno.h>
  18 #include <signal.h>
  19 #include "osd/ECBackend.h"
  20 #include "gtest/gtest.h"
  21
  22 using namespace std;
  23
  24 TEST(ECUtil, stripe_info_t)
  25 {
  26   const uint64_t swidth = 4096;
  27   const uint64_t ssize = 4;
  28
  29   ECUtil::stripe_info_t s(ssize, swidth);
  30   ASSERT_EQ(s.get_stripe_width(), swidth);
  31
  32   ASSERT_EQ(s.logical_to_next_chunk_offset(0), 0u);
  33   ASSERT_EQ(s.logical_to_next_chunk_offset(1), s.get_chunk_size());
  34   ASSERT_EQ(s.logical_to_next_chunk_offset(swidth - 1),
  35             s.get_chunk_size());
  36
  37   ASSERT_EQ(s.logical_to_prev_chunk_offset(0), 0u);
  38   ASSERT_EQ(s.logical_to_prev_chunk_offset(swidth), s.get_chunk_size());
  39   ASSERT_EQ(s.logical_to_prev_chunk_offset((swidth * 2) - 1),
  40             s.get_chunk_size());
  41
  42   ASSERT_EQ(s.logical_to_next_stripe_offset(0), 0u);
  43   ASSERT_EQ(s.logical_to_next_stripe_offset(swidth - 1),
  44             s.get_stripe_width());
  45
  46   ASSERT_EQ(s.logical_to_prev_stripe_offset(swidth), s.get_stripe_width());
  47   ASSERT_EQ(s.logical_to_prev_stripe_offset(swidth), s.get_stripe_width());
  48   ASSERT_EQ(s.logical_to_prev_stripe_offset((swidth * 2) - 1),
  49             s.get_stripe_width());
  50
  51   ASSERT_EQ(s.aligned_logical_offset_to_chunk_offset(2*swidth),
  52             2*s.get_chunk_size());
  53   ASSERT_EQ(s.aligned_chunk_offset_to_logical_offset(2*s.get_chunk_size()),
  54             2*s.get_stripe_width());
  55
  56   ASSERT_EQ(s.aligned_offset_len_to_chunk(make_pair(swidth, 10*swidth)),
  57             make_pair(s.get_chunk_size(), 10*s.get_chunk_size()));
  58
  59   ASSERT_EQ(s.offset_len_to_stripe_bounds(make_pair(swidth-10, (uint64_t)20)),
  60             make_pair((uint64_t)0, 2*swidth));
  61 }
  62