//!!!! to be included into src/test/objectstore/store_test.cc!!!

TEST_P(StoreTestSpecificAUSize, BlobReuseBug) {

  if (string(GetParam()) != "bluestore")
    return;

  size_t block_size = 0x10000;
  StartDeferred(block_size);
  g_conf->set_val("bluestore_max_blob_size", "131072");
  g_conf->set_val("bluestore_compression_mode", "force");
  g_conf->apply_changes(NULL);

  ObjectStore::Sequencer osr("test");
  int r;
  coll_t cid;
  ghobject_t hoid1(hobject_t(sobject_t("Object 1", CEPH_NOSNAP)));
  ghobject_t hoid2(hobject_t(sobject_t("Object 2", CEPH_NOSNAP)));

  const PerfCounters* logger = store->get_perf_counters();

  {
    ObjectStore::Transaction t;
    t.create_collection(cid, 0);
    r = apply_transaction(store, &osr, std::move(t));
    ASSERT_EQ(r, 0);
  }
  {
    ObjectStore::Transaction t;
    bufferlist bl, bl2;

    t.touch(cid, hoid1);
    t.touch(cid, hoid2);
    t.set_alloc_hint(cid, hoid1,
	      0x20000,
	      0x4000,
	      0);
    t.set_alloc_hint(cid, hoid2,
	      0x20000,
	      0x4000,
	      0);

    bl.append(std::string(0x17000, 'a'));
    t.write(cid, hoid1, 0, bl.length(), bl, 0);
    bl2.append(std::string(0x1000, 'c'));
    t.write(cid, hoid1, 0x17000, bl2.length(), bl2, 0);
    t.zero(cid, hoid1, 0, 0x14a00);

    t.touch(cid, hoid2);
    r = apply_transaction(store, &osr, std::move(t));
    ASSERT_EQ(r, 0);
  }

  {
    ObjectStore::Transaction t;
    bufferlist bl, expected;

    t.clone_range(cid, hoid1, hoid2, 0x400, 0x17c00, 0x400);
    r = apply_transaction(store, &osr, std::move(t));
    ASSERT_EQ(r, 0);

    r = store->read(cid, hoid1, 0x14a00, 0x3600, bl);
    ASSERT_EQ(r, (int)0x3600);
    expected.append(string(0x2600, 'a'));
    expected.append(string(0x1000, 'c'));
    ASSERT_TRUE(bl_eq(expected, bl));
    bl.clear();
    r = store->read(cid, hoid2, 0x14a00, 0x3600, bl);
    ASSERT_EQ(r, (int)0x3600);
    ASSERT_TRUE(bl_eq(expected, bl));

  }
  {
    // partially zero source
    ObjectStore::Transaction t;
    bufferlist bl, expected;

    t.zero(cid, hoid1, 0x14e00, 0x19600);
    r = apply_transaction(store, &osr, std::move(t));
    ASSERT_EQ(r, 0);

    r = store->read(cid, hoid1, 0x14a00, 0x3600, bl);
    ASSERT_EQ(r, (int)0x3600);
    expected.append(string(0x400, 'a'));
    expected.append(string(0x3200, 0));
    ASSERT_TRUE(bl_eq(expected, bl));
   bl.clear();
    expected.clear();
    expected.append(string(0x2600, 'a'));
    expected.append(string(0x1000, 'c'));
    r = store->read(cid, hoid2, 0x14a00, 0x3600, bl);
    ASSERT_EQ(r, (int)bl.length());
    ASSERT_TRUE(bl_eq(expected, bl));
  }

  {
    ObjectStore::Transaction t;
    t.remove(cid, hoid1);
    t.remove(cid, hoid2);
    t.remove_collection(cid);
    cerr << "Cleaning" << std::endl;
    r = apply_transaction(store, &osr, std::move(t));
    ASSERT_EQ(r, 0);
  }
  g_conf->set_val("bluestore_compression_mode", "none");
  g_conf->set_val("bluestore_max_blob_size", "524288");

}