diff --git a/unittest/c-library/test_library_properties.cpp b/unittest/c-library/test_library_properties.cpp
index 033e9c041e..39b31e8217 100644
--- a/unittest/c-library/test_library_properties.cpp
+++ b/unittest/c-library/test_library_properties.cpp
@@ -383,10 +383,35 @@ TEST_F(LibraryProperties, global)
     char *c_ptr = (char *)lammps_extract_global(lmp, "units");
     EXPECT_THAT(c_ptr, StrEq("real"));
 
-    EXPECT_EQ(lammps_extract_global_datatype(lmp, "ntimestep"), LAMMPS_INT64);
-    auto *b_ptr = (int64_t *)lammps_extract_global(lmp, "ntimestep");
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "ntimestep"), LAMMPS_BIGINT);
+    auto *b_ptr = (bigint *)lammps_extract_global(lmp, "ntimestep");
     EXPECT_EQ((*b_ptr), 2);
 
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "natoms"), LAMMPS_BIGINT);
+    b_ptr = (bigint *)lammps_extract_global(lmp, "natoms");
+    EXPECT_EQ((*b_ptr), 29);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "nbonds"), LAMMPS_BIGINT);
+    b_ptr = (bigint *)lammps_extract_global(lmp, "nbonds");
+    EXPECT_EQ((*b_ptr), 24);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "nangles"), LAMMPS_BIGINT);
+    b_ptr = (bigint *)lammps_extract_global(lmp, "nangles");
+    EXPECT_EQ((*b_ptr), 30);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "ndihedrals"), LAMMPS_BIGINT);
+    b_ptr = (bigint *)lammps_extract_global(lmp, "ndihedrals");
+    EXPECT_EQ((*b_ptr), 31);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "nimpropers"), LAMMPS_BIGINT);
+    b_ptr = (bigint *)lammps_extract_global(lmp, "nimpropers");
+    EXPECT_EQ((*b_ptr), 2);
+
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "neigh_bondlist"), LAMMPS_INT_2D);
+    EXPECT_NE(lammps_extract_global(lmp, "neigh_bondlist"), nullptr);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "neigh_anglelist"), LAMMPS_INT_2D);
+    EXPECT_NE(lammps_extract_global(lmp, "neigh_anglelist"), nullptr);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "neigh_dihedrallist"), LAMMPS_INT_2D);
+    EXPECT_NE(lammps_extract_global(lmp, "neigh_dihedrallist"), nullptr);
+    EXPECT_EQ(lammps_extract_global_datatype(lmp, "neigh_improperlist"), LAMMPS_INT_2D);
+    EXPECT_NE(lammps_extract_global(lmp, "neigh_improperlist"), nullptr);
+
     EXPECT_EQ(lammps_extract_global_datatype(lmp, "eflag_global"), LAMMPS_BIGINT);
     b_ptr = (bigint *)lammps_extract_global(lmp, "eflag_global");
     EXPECT_EQ((*b_ptr), 2);