add unit tester for MyPage class

target_link_libraries(test_tokenizer PRIVATE lammps GTest::GMockMain GTest::GMock GTest::GTest)

add_test(Tokenizer test_tokenizer)

add_executable(test_my_page test_my_page.cpp)

target_link_libraries(test_my_page PRIVATE lammps GTest::GMockMain GTest::GMock GTest::GTest)

add_test(MyPage test_my_page)

add_executable(test_utils test_utils.cpp)

target_link_libraries(test_utils PRIVATE lammps GTest::GMockMain GTest::GMock GTest::GTest)

add_test(Utils test_utils)

/* ----------------------------------------------------------------------

   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator

   http://lammps.sandia.gov, Sandia National Laboratories

   Steve Plimpton, sjplimp@sandia.gov

   Copyright (2003) Sandia Corporation.  Under the terms of Contract

   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains

   certain rights in this software.  This software is distributed under

   the GNU General Public License.

   See the README file in the top-level LAMMPS directory.

------------------------------------------------------------------------- */

#include "lmptype.h"

#include "my_page.h"

#include "gmock/gmock.h"

#include "gtest/gtest.h"

using namespace LAMMPS_NS;

TEST(MyPage, int_default) {

    MyPage<int> p;

    // default init. maxchunk=1, pagesize=1024

    int rv = p.init();

    ASSERT_EQ(rv,0);

    ASSERT_EQ(p.ndatum,0);

    ASSERT_EQ(p.nchunk,0);

    int *iptr = p.vget();

    // second call to vget() should give same pointer without vgot()

    ASSERT_EQ(iptr,p.vget());

    p.vgot(1);

    ++iptr;

    ASSERT_EQ(0,p.status());

    ASSERT_EQ(p.ndatum,1);

    ASSERT_EQ(p.nchunk,1);

    ASSERT_EQ(iptr,p.vget());

    // use too large chunk size

    p.vgot(2);

    ASSERT_EQ(1,p.status());

    p.reset();

    ASSERT_EQ(p.ndatum,0);

    ASSERT_EQ(p.nchunk,0);

    iptr = p.vget();

    p.vgot(1);

    ++iptr;

    ASSERT_EQ(iptr,p.get());

    ++iptr;

    ASSERT_EQ(iptr,p.get(1));

    ASSERT_EQ(p.ndatum,3);

    ASSERT_EQ(p.nchunk,3);

}

TEST(MyPage, int_custom) {

    MyPage<int> p;

    // default init. maxchunk=16, pagesize=256

    int rv = p.init(16,256);

    ASSERT_EQ(rv,0);

    ASSERT_EQ(p.ndatum,0);

    ASSERT_EQ(p.nchunk,0);

    int *iptr = p.vget();

    // second call to vget() should give same pointer without vgot()

    ASSERT_EQ(iptr,p.vget());

    p.vgot(16);

    iptr += 16;

    ASSERT_EQ(0,p.status());

    ASSERT_EQ(p.ndatum,16);

    ASSERT_EQ(p.nchunk,1);

    // use too large chunk size

    ASSERT_EQ(iptr,p.vget());

    p.vgot(32);

    ASSERT_EQ(1,p.status());

    p.reset();

    ASSERT_EQ(p.ndatum,0);

    ASSERT_EQ(p.nchunk,0);

    iptr = p.vget();

    p.vgot(16);

    iptr = p.vget();

    p.vgot(4);

    iptr += 4;

    ASSERT_EQ(iptr,p.get());

    ++iptr;

    ASSERT_EQ(iptr,p.get(16));

    ASSERT_EQ(p.ndatum,37);

    ASSERT_EQ(p.nchunk,4);

}