Method checkSizes

bolt/exec/tests/RowContainerTest.cpp:274–283

  }

  void checkSizes(std::vector<char*>& rows, RowContainer& data) {
    int64_t sum = 0;
    for (auto row : rows) {
      sum += data.rowSize(row) - data.fixedRowSize();
    }
    auto usage = data.stringAllocator().cumulativeBytes();
    if (data.testingRowPointers().empty()) {
      EXPECT_EQ(usage, sum);
    }
  }

  /*
   * We changed the way to measure memory usage in the